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doc0

Yaesu FT-7900R Dual Band Mobile Transceiver
Reviewed by Gary Pearce, KN4AQ kn4aq@arrl.net QST Contributing Author
The Yaesu FT-7900R dual band FM mobile is an update of the FT-7800R reviewed back in April 2004.1 That was a long time ago! What got updated? Not really that much it didnt need much. Its a very capable radio with a really good receiver. So what Im going to do is dig deeper and use this radio to discuss some things about FM and repeater operation that affect day-to-day operation. The first thing I want to do is introduce two acronyms: OBAAT and TWOBAAT. They stand for One Band At A Time, and Two Bands At A Time. Since I invented the words, I get to decide how to pronounce them. The O in OBAAT is more like the oo in boot, so it rhymes with the two in TWOBAAT. The FT-7900 is an OBAAT. It can transmit on 2 meters or 70 centimeters, but you can listen to just one frequency at a time. Hence the name. The receiver covers 108 MHz to 1 GHz, skipping only the television channels at 500 and 600 MHz and the usual cell phone stuff at 800 MHz. No loss all thats gone digital, so you couldnt decode it anyway. This receiver coverage is good, but its not exceptional. Some handhelds cover the shortwave and AM and FM broadcast bands. Shouldnt mobile radios do more than handhelds? That would be exceptional in a dual band mobile radio. What is exceptional is the radios immunity to intermod the mixing of two strong off-channel signals creates a new signal that appears on a third frequency where you dont want it. Youll hear hams say that any receiver with a barn door front end (that is, wide enough to tune the business and public safety frequencies far outside the ham bands) will be prone to intermod. But Yaesus FT-7900 (and 8800 and 8900) have broad receivers with good intermod specs on VHF, so you can have your cake and tune it, too. On 2 meters, the ARRL Lab measured IMD dynamic range at 10 MHz spacing thats considerably better than the typical dual band mobile, and its even slightly better than many 2 meter only radios weve reviewed in the past few years. The FT-7900 transmits only FM, wide and narrow. Wide and narrow? Yes. For a decade at least, our FM radios have had the option of using the usual 5 kHz deviation (now called wide), or 2.5 kHz deviation, usually called narrow. The 2.5 kHz deviation permits put1J.
ting channels closer together, squeezing more repeaters into a given amount of spectrum. Few if any ham repeaters are using narrow deviation, as it is somewhat incompatible with wide and there are still plenty of radios in use that only do wide. Narrow deviation will be useful in another few decades when those old legacy radios are toast. Our commercial cousins are required to switch to narrow now. Transmit audio reports on the 7900 were good. I always wish for a little higher fidelity, but this radio is okay with my voice and some hams rave about it. Some transceivers now have at least a two step MIC GAIN control, but not this Yaesu line. Im sure youve heard the wide range of transmit audio levels among stations on the repeaters. Crank up the volume to hear station As near-whisper, and when station B picks it up his booming voice rattles your teeth. Put a MIC GAIN control and mild compression on my wish list. Opposing argument users will misadjust these controls.
can monitor on side B. This argument fails to persuade many hams. In the likely event youre among them, the 7900 is just right for you. By the way, the 7900 does hear our 222 MHz band but doesnt transmit there.

Music Box

All the front panel buttons except the
POWER button are backlit and easy to read.

OBAAT or TWOBAAT?

I prefer TWOBATTs over OBAATs. Ive had the FT-7900s big (and older) brother, the FT-8900, TWOBAAT, for some time now. TWOBATTs give you most of the capability of two OBAATs for about 50% more money. They can listen to and display two frequencies at the same time. When I recommend TWOBATTs (and Im using the heck out of the terms to make it hard for the editor to snip out the concept, though I admit its starting to look silly), hams often ask me how I can listen to two conversations at once. The fact that I can, by adjusting them to different volume levels, is not the point. Usually Im listening to one repeater frequency that may or may not be busy on side A, while scanning or listening to another frequency on side B. Ill catch any traffic that pops up on side A while still entertaining myself with whatever activity I
Carcia, NJ1Q, The Yaesu FT-7800R Dual Band FM Transceiver, Product Review, QST, Apr 2004, pp 78-81.
Display characters are large and easy to read, too, but there are only six large characters available for the user programmed alphanumeric label for memory channels. The rest of the display is used for the little icons that indicate radio parameters. A nice touch you can choose between frequency or alphanumeric label on a channel-by-channel basis. The FT-7800 review noted that the display tended to fade when viewed from off axis. I dont see that with the 7900 except from way below, at which point it totally disappears. Side and high angle views are good almost until the body of the radio is in the way. Display brightness is adjustable. Good job! Most of the mic buttons can be lit, but you can turn the light off with a switch on the side to save power if youre operating with limited battery power. The A , B , C and D mic buttons provide additional functions in receive mode. The front panel buttons make low or high pitched beeps with a logical pattern if pushed. The number keys on the mic all have their own beep tones, pitched low to high corresponding to the numbers. This music helps hams with vision limitations a lot, of course. It also helps drivers who should be keeping their eyes on the road. You can turn the beeps off if they bother you. The panel itself is removable and the body can be remote mounted. The YSK-7800 separation kit is listed as an option, but one came with the review radio as a promotion. It consists of a long cable with RJ-11 con-

From October 2010 QST ARRL
nectors at each end and a bracket to mount the control head. I like that the microphone plugs into the head, not the radio body, so you dont need a separate cable to extend the mic. The speaker is in the body, of course, so youll have to use an external speaker if you tuck the body in the trunk or under a seat. The internal speaker is adequate if the radio is nearby, but it sounds better with an external speaker.
The VOLUME and SQUELCH knobs dont have much friction, so theyre easy to misadjust in a bouncing car. I recently started appreciating the stiffer knobs on some other radios in my mobile. I think the roads are getting worse. The back of the radio has the ANTENNA connector, a 18 inch mono SPEAKER jack, a six-pin mini-DIN for packet and programming, and a fan that activates during transmit and stays on for a while in receive. The fan is quieter than most.
it encounters the tone that the repeater is sending. A few radios make this easy, with a dedicated one push front panel button. The 7900 makes you dig through a couple of menus to start the scan, and then makes the radio go deaf until the tone is found. You do not want to do this while driving.

Banks for the Memories

The FT-7900 has about 1000 memory channels. How many memory channels do you use in your current radio? Less than 10, 0? I hear that a lot. I admit Im a power user. I like knowing whats going on with all the repeaters in the area, so I scan a lot. When Im on the road, I scan the whole band. To do this, I program all the local repeaters into a group of memories. That takes about 70 in my area. Then I program all the 2 meter band plan channels into memory. That uses about 100 memory channels, and Im a button push away from scanning everything. The memory channels hold the usual suspects frequency, offset, tone and one parameter other radio brands Ive used dont power. You could use the 7900s band limit scan, with which you program in the low and high limit frequencies, then scan everything in between. That works okay on UHF, where all the repeater output frequencies are neatly lined up across about 5 MHz of spectrum (but a different 5 MHz in different regions of the country, and not in the Northeast, where input and output frequencies may be inverted). On 2 meters, our convoluted band plan doesnt lend itself to that kind of scan at all. Programming all the channels into memories makes scanning them more efficient. Even then we have two basic band plans to consider. Most eastern states use 20 kHz channels below 146 MHz and 15 kHz channels above. Many western states (and Michigan and Alabama) use all 20 kHz channels. The FT-7900s 1000 memories make it possible to store two sets of band plan channels. Youll want to use the optional ADMS-7900 programming software and cable, not the buttons and dial on the front panel. Using a radio loaded up with 1000 memory channels is wonderful until you try to figure out where you are in those 1000 channels, and how to get to where you want to be. If you remember the memory number, you can use the mic to key it in directly (you can also enter frequencies directly in VFO mode). Dialing across 1000 memories takes a while. Speed it up by pressing the MHz button and tuning 10 channels per click. Thats still a lot of dialing, so Im grateful for the bank system that lets you group memories together, effectively making a much smaller radio. The 7900 lets you place a given memory channel in one or more of 20 banks. If youre in a bank and spin the dial, you dial only the channels in the bank. Push

Key Measurements Summary

0.18 0.17

Simple? Its Manual Time

Yaesus Web site says the radio is designed for simplicity of operation. Many hams who commented online agree, and they like it. My take: Its true that nothing in the 7900 is overly complex, but there are dozens of simple operations. Some are set and forget, but a few routine functions are buried deeper than Id like. Many functions are clearly labeled on the buttons, but many more are not. The 7900 has 48 items in its SET menu, in alphabetical order if you can decode the sometimes cryptic labels. Youll probably never use some of the features controlled in those menus, and a truly simple radio would do without them, but they dont get in the way. The 7900 is about as simple as a radio can be today. The manual does a very good job of guiding you through the settings and options in its 78 pages. It includes a narrative description of what a function is for, in addition to the step-by-step instructions of how to set it. Its short and to the point, and most of the time its clear if you have a basic understanding of FM and repeater operation. As I flipped through the manual, a sheet fell out. It was a full schematic and block diagram. Youll need a magnifying glass, but its a nice touch.

SINAD 0.25

0.1 93@10 MHz**
Receiver Sensitivity (12dB SINAD, V)

76@10 MHz 56@20 kHz*

Receiver 3rd-Order Dynamic Range (dB)

Rx 40 54@20 kHz*

ChRej 50 54

90 127

Adjacent Channel Rejection (dB)

IF Rejection (dB)

Tone Deaf
CTCSS (continuous tone coded squelch system, which Ill shorten to tone) is a necessary evil. More than half the repeaters on the air require it, and the complaints about it have finally abated. Maybe the last radio that didnt have tone built in finally broke. But tone is still traveler hostile. Without advance planning and programming, a ham on the road is effectively locked out of tone access repeaters.2 Better design could help. The 7900 is an example of a radio that could do a much better job with tone. You turn tone on and off with a convenient frontpanel button, but you set the tone frequency by digging up a menu that can be multiple button pushes and knob twists away. If you need this radio to hunt up a tone from a new repeater, youre going to have to work for it. Tone scan is a feature most radios have to help you find the tone for a repeater youve encountered. While the repeater is on the air, the radio scans through the list of about 50 possible tones and stops when

Img 60

Image Rejection (dB)

Audio Output (W)

**Off Scale

2M 70 cm

* Measurement noise limited

at value shown.

Bottom Line
Yaesus FT-7900R dual band mobile radio includes excellent receiver performance, a wide range of features and relatively simple operation in a sturdy package.
Table 2 Yaesu FT-7900R, serial number 9L000080
Manufacturers Specifications
Frequency coverage: Receive, 108-520, 700- 999.990 MHz (cellular blocked); transmit, 144-148 MHz, 430-450 MHz. Modes: FM, NFM, AM (108-136, 300-336 MHz). Power requirements: 13.8 V dc 15%; receive: 500 mA (squelched); transmit, 8.5 A (144 MHz, 50 W), 9 A (430 MHz, 45 W). Receiver FM sensitivity: 12 dB SINAD, 0.2 V (137- 150 MHz), 0.25 V (150-174 MHz), 0.3 V (174-222 MHz), 0.25 V (222-300 MHz and 336-420 MHz), 0.2 V (420-520 MHz), 0.4 V (800-900 MHz), 0.8 V (900-1000 MHz). AM sensitivity: 10 dB S+S/N, 0.8 V (108-137), 0.8 V (300-336 MHz). FM two-tone, third-order IMD dynamic range: Not specified.

Measured in ARRL Lab

Receive, 108-136 (AM), 136-300, 300336 (AM), 336-520, 700-824, 850869, 894-914, 939-959, 984-1000 MHz; transmit, as specified. As specified. AM is receive only. Receive, 405 mA (max vol, max lights, no signal), 160 mA (standby, no lights). Transmit (high, mid 1, mid 2, low), 146 MHz, 7.8, 4.4, 3.3, 2.4 A; 440 MHz, 7.7, 4.6, 3.4, 2.6 A. Receiver Dynamic Testing For 12 dB SINAD, 0.18 V (146 MHz), 0.2 V (162 MHz), 0.28 V (200 MHz), 0.22 V (222 MHz), 0.25 V (360 MHz), 0.17 V (440 MHz), 0.3 V (850 MHz), 0.73 V (902 MHz). For 10 dB S+S/N, 0.91 V (120 MHz), 0.8 V (320 MHz). 20 kHz offset: 56 dB* (146 and 222 MHz), 54 dB* (440 MHz), 50 dB* (902 MHz). 10 MHz offset: 93 dB (146 MHz), 63 dB (222 MHz), 76 dB (440 MHz), 70 dB, (902 MHz).
FM two-tone, second-order IMD dynamic range: 87 dB (146 MHz), 109 dB (440 MHz). Not specified. Adjacent-channel rejection: Not specified. Spurious response: Not specified. Squelch sensitivity: >0.16 V. S meter sensitivity: Not specified. Audio output: 2 W at 10% THD into 8 W. 20 kHz offset: 56 dB (146 and 222 MHz), 54 dB (440 MHz), 50 dB (902 MHz). IF rejection, 127 dB (146 and 440 MHz), 116 dB (222 MHz), 120 dB (902 MHz). Image rejection, 99 dB (146 MHz), 95 dB (222 MHz), 71 dB (440 MHz), 7 dB (902 MHz). At threshold, 0.05 V (146 MHz); 0.07 V (440 MHz). Full scale: 5.3 V (146 MHz), 6.3 V (440 MHz). 2.3 W at 3.2% THD into 8 W (max volume),THD at 1 V RMS, 1.5%.

Transmitter Transmitter Dynamic Testing Power output (high, mid 1, mid 2, low): 146 MHz, 146 MHz: 44.8, 16.2, 8.0, 4.6 W; 50, 20, 10, 5 W; 440 MHz, 45, 20, 10, 5 W 440 MHz: 36.3, 16.3, 8.2, 3.8 W. at 13.8 V dc 15%. At 11.4 V dc, 40.9 W (146 MHz), 36.1 W (440 MHz). Spurious signal and harmonic suppression: >60 dB. Transmit-receive turnaround time (PTT release to 50% of full audio output): Not specified. Receive-transmit turnaround time (tx delay): Not specified. 69 dB (146 MHz), 68 dB (440 MHz). Meets FCC requirements. Squelch on, S9 signal, 144 ms. 122 ms (146 MHz), 96 ms (440 MHz).
up, down or off (simplex). Fortunately, the 7900 has four programmable buttons on the microphone that can be set to select any of 17 parameters. I keep the offset direction on one of those buttons on my 8900. True, the radio has an automatic offset function, but band plans in many states offer offset options for some channels (especially 147.00 MHz). And the radio leaves the automatic offset on for the whole top 10 MHz of the UHF band, even though some of that spectrum is used for simplex. One of the front panel buttons is programmable, too, with a choice of six parameters. Five front panel buttons combine the functions of programmable buttons and memories. These are the HYPER MEMORY buttons located to the left and right of the display. Press and hold one of these buttons and it takes a snapshot of every parameter and condition of the radio. Press it briefly, and it recalls what you set. So put the radio in MEMORY BANK 1, start it scanning, then press and hold HYPER MEMORY 5. Set up for something else, and later, when you press HYPER MEMORY 5, youre back in MEMORY BANK 1, scanning away. The HYPER MEMORY function goes deep into all the SET functions, so be careful what you select. I find these buttons incredibly useful. The sixth button alongside the display can be used to lock the radio so you dont accidentally bump the dial or change other parameters. That button also activates the WIRES DTMF function. (WIRES is Yaesus brand of Internet linking for repeaters think IRLP and Echolink. Its more popular in Europe and Asia than in the US.) Activating it causes the radio to send a programmable series of DTMF tones at the start of each transmission (thats how WIRES works), meanwhile muting the microphone for a while. Turning it on accidentally can cause problems on repeaters that mute for several seconds if receiving DTMF tones nobody will hear what you say! Youll hear the tone in your speaker, and a little icon appears on the display. Ive had to talk many a Yaesu user through how to turn WIRES off when I noticed that the first several seconds of every transmission were muted.

Size (height, width, depth): 1.6 5.5 6.6 inches (w/o knobs); weight, 2.2 pounds. Price: FT-7900R, $290; ADMS-7900 Windows programming software and cable, $50; YSK-7800 separation kit, $50; CT-39 packet cable, $12.
*Measurement was noise limited.

Conclusion

Everybodys product line includes a dual band OBAAT, all priced within a narrow range. The FT-7900R distinguishes itself with a better than average receiver, some unique features youll appreciate (and I didnt cover them all), and relative simplicity. Its a worthy contender if your needs, wants and budget are modest. Manufacturer: Vertex Standard, 10900 Walker St, Cypress, CA 90630; tel 714-8277600; www.yaesu.com.
scan, and you scan only the bank. So theres my local group, my airport group, my overthe-road group and my public service event group. Sweet. A few repeaters use nonstandard offsets. The 7900 gives you a way to program a memory for a nonstandard split without changing the offset setting, using a few extra button pushes and a mic click. This function
will also let you program different tones for transmit and receive. Not many repeaters need that, but if yours does, the feature is handy, and rare.
Programmable Buttons, and Very Programmable Buttons
One function thats buried deeper than it should be is the repeater offset direction
the ARRLs Travel Plus for Repeaters and some programming software, you can plan ahead by loading the repeaters youll pass on your trip into memory, tone and all.

doc1

DUAL BAND FM TRANSCEIVER

FT-7900R

OPERATING MANUAL

VERTEX STANDARD CO., LTD. VERTEX STANDARD YAESU UK LTD.
4-8-8 Nakameguro, Meguro-Ku, Tokyo 153-8644, Japan US Headquarters 10900 Walker Street, Cypress, CA 90630, U.S.A. Unit 12, Sun Valley Business Park, Winnall Close Winchester, Hampshire, SO23 0LB, U.K.

VERTEX STANDARD HK LTD.

Unit 5, 20/F., Seaview Centre, 139-141 Hoi Bun Road, Kwun Tong, Kowloon, Hong Kong
VERTEX STANDARD (AUSTRALIA) PTY., LTD.
Normanby Business Park, Unit 14/45 Normanby Road Notting Hill 3168, Victoria, Australia

Contents

FT-7900R Quick Reference Guide. i Introduction.. 1 Specifications.. 2 Accessories & Options.. 3 Supplied Accessories.. 3 Optional Accessories.. 3 Installation... 4 Preliminary Inspection.. 4 Installation Tips... 4 Safety Information.. 5 Antenna Considerations.. 6 Mobile Installation... 8 Mobile Power Connections. 9 Mobile Speakers... 9 Base Station Installation. 10 AC Power Supplies.. 10 Packet Radio Terminal Node Controller.. 10 Front Panel Controls & Switches. 12 Side Panel Connection & Knob. 14 LCD.. 14 Rear Panel Connections.. 15 MH-48A6J Microphone.. 16 MH-42B6JS Microphone.. 18 Basic Operation... 20 Turning the Transceiver On and Off. 20 Adjusting the Audio Volume Level and Squelch Setting.. 20 Selecting the Operating Band.. 20 Frequency Navigation.. 21 Transmission.. 22 Changing the Transmitter Power Level. 22 Advanced Operation.. 23 Lock Feature.. 23 Keyboard Beeper.. 23 Display Brightness.. 24 RF Squelch... 24 Channel Step Selection.. 25 Receiving Mode Selection.. 25 Repeater Operation.. 26 Repeater Shifts.. 26 Automatic Repeater Shift (ARS). 26 Manual Repeater Shift Activation. 27 Changing the Default Repeater Shift. 27 CTCSS/DCS Operation.. 28 CTCSS Operation... 28 DCS Operation.. 29 Tone Search Scanning.. 30 Split Tone Operation. 31 Memory Operation... 32 Regular Memory Channel Operation. 33 Memory Storage.. 33 To Append an Alpha-numeric Tag to a Memory... 33 Storing Independent Transmit Frequencies (Odd Splits).. 34 Memory Recall... 35 Memory Offset Tuning.. 35 Deleting Memories.. 36 HOME Channel Memory.. 36 Memory Bank Operation.. 38 Memory Only Mode.. 39 Hyper Memory Channel Operation. 40 Hyper Memory Storage.. 40 Hyper Memory Recall.. 40 Weather Broadcast Channel Operation. 41 Scanning... 42 Setting the Scan-Resume Technique. 42 VFO Scanning... 43 Memory Scanning.. 44 How to Skip (Omit) a Channel During Memory Scan Operation. 44 Preferential Memory Scan.. 45 Memory Bank Scan.. 46 Weather Alert Scan.. 46 Programmable (Band Limit) Memory Scan. 47 Priority Channel Scanning (Dual Watch). 48 VFO Priority.. 48 Memory Priority.. 48 HOME Priority... 48 WX Priority... 49 Priority Revert Mode. 49 Smart Search... 50 ARTSTM: Auto Range Transponder System. 52 Basic ARTS Setup and Operation. 52 ARTS Polling Time Options. 53 ARTS Alert Beep Option.. 53 CW Identifier Setup.. 54 DTMF Autodialer Operation. 56 Internet Connection Feature.. 58 Miscellaneous Settings. 60 Time-Out Timer.. 60 Automatic Power Off.. 60 MIC Gain Control.. 61 Programming the Key Assignment. 62 DCS Code Inversion. 64 Reset Procedure... 65 Cloning.. 66 Menu (Set) Mode.. 67 Auto Mode Preset Operating Parameters. 78

MH-48A6J MICROPHONE

PTT Switch
Press this switch to transmit, and release it to receive.

Keypad

These 16 keys generate DTMF tones during transmission. In the receive mode, the numeric (0 - 9) keys can be used for direct frequency entry and/or direct numeric recall of the Memory channels and the alphabet (A - D) keys can be used for controls the transceiver, as follow: [A] Key: Press this key momentarily to activate the Smart Search feature. Press and hold in this key for 1/2 second to activates the ARTS feature. [B] Key: Press this key momentarily to switch the Memory Channel display between the Frequency format and Alpha-numeric Tag format. [C] Key: Press this key momentarily to disable the noise squelch action, allowing you to hear very weak signals near the background noise level. [D] Key: Press this key momentarily to allow tuning in 1-MHz steps on the VFO frequency while operating on the VFO mode. In the Memory mode, this allows tuning in 10channel steps on the memory channels. Press and hold in this key for 1/2 second to activate the Priority Channel Scanning (Dual Watch) feature.
[P1]/[P2]/[P3]/[P4] Buttons
[P1] button: This button replicates the functions of the front panel [BAND(SET)] key. While operating on the VFO mode, press this button momentarily to toggle the operating band as follows: 144 MHz 250 MHz 350 MHz 430 MHz 850 MHz 144 MHz. In the Memory mode, press this button momentarily to activate the Memory Tune function. Press and hold in this key for 1/2 second to enter the Set (Menu) mode.
[P2] button: This button replicates the functions of the front panel [V/M(MW)] key. Press this button momentarily to switch the frequency control among the VFO, Memory System, and Home channel. Press and hold in this button for 1/2 second to transfer the VFO contents into a Memory register. [P3] button: This button replicates the functions of the front panel [TONE(REV)] key. Press this button momentarily to change the Tone Squelch mode: ENC (CTCSS Encoder), ENC.DEC (CTCSS Tone Squelch), or DCS (DCS) operation. Press and hold in this key for 1/2 second to reverse the transmit and receive frequencies during split-frequency (i.e. Repeater) operation. [P4] button: This button replicates the functions of the front panel [LOW(ACC)] key. Press this button momentarily to select the transmitter power output level (LOW, MID2, MID1, or HIGH). Press and hold in this key for 1/2 second to recall the Weather Broadcast Channels. You can program the [P1], [P2], [P3], and [P4] buttons for other functions, if desired. See page 62 for details.

. LOCK Switch

This switch locks out the Microphones buttons (except for the PTT switch).
Press (or hold in) either of these buttons to tune (or scan up or down) the operating frequency or through the memory channels. In many ways, these buttons emulate the function of the (rotary) DIAL knob. Notice: If you change the microphone from the MH-48A6J to the MH-42B6JS or vice versa, change the setting of Menu #22 (MIC See page 73 for details. MIC). MIC

BASIC OPERATION

Hi! Im R. F. Radio, and Ill be helping you along as you learn the many features of the FT-7900R. I know youre anxious to get on the air, but I encourage you to read the Operation section of this manual as thoroughly as possible, so youll get the most out of this fantastic new transceiver. Now.lets get operating!
TURNING THE TRANSCEIVER ON AND OFF
1. To turn the transceiver on, press and hold in the PWR ( ) switch for 1/2 second. When you turn on the FT-7900R, the current DC supply voltage is indicated on the LCD for 2 seconds. After this interval, the display will switch its normal indication of the operating frequency. 2. To turn the transceiver off, again press and hold in the PWR ( ) switch for 1/2 second.
ADJUSTING THE AUDIO VOLUME LEVEL AND SQUELCH SETTING
At first, set the SQL knob fully counter-clockwise. Now, you may rotate the VOL knob clockwise to adjust the receiver volume for a comfortable listening level, using the background noise as a reference. To set the squelch, turn the SQL knob clockwise a slightly past the point where the background noise is muted. This is the point of best sensitivity to weak signals, and we recommend that you not rotate the SQL knob very much past the point where the background noise is just silenced. A special RF Squelch feature is provided on this radio. This feature allows you to set the squelch so that only signals exceeding a certain S-meter level will open the squelch. See page 24 for details
SELECTING THE OPERATING BAND
Press the [BAND(SET)] key to move the operating band: 144 MHz 250 MHz 350 MHz 430 MHz 850 MHz 144 MHz. You may select the operating band by pressing the microphones [P1] key.

FREQUENCY NAVIGATION

1) Tuning Dial
Rotating the DIAL knob allows tuning in the pre-programmed steps established for the VFO frequency. Clockwise rotation of the DIAL knob causes the FT-7900R to be tuned toward a higher frequency, while counter-clockwise rotation will lower the operating frequency. Press the [MHz(PRI)] key momentarily, then rotate the DIAL knob, to change the frequency steps to 1 MHz per step. This feature is extremely useful for making rapid frequency excursions over the wide tuning range of the FT-7900R.

LOW POWER (5 W)

MID 2 POWER (10 W)

MID 1 POWER (20 W)

HIGH POWER (50 W: 144 MHZ, 45 W: 430 MHZ)

ADVANCED OPERATION

LOCK FEATURE
In order to prevent accidental frequency change or inadvertent transmission, the FT-7900R panel switches, microphone switches (except the PTT switch), and DIAL knob may be locked out. To activate the lock feature, press and hold in the [ (L)] key for 1/2 second. The icon will appear on the LCD. To disable the lock feature, press and hold in the [ key for 1/2 second again. (L)]
You may change the lockout combinations by Menu #21 (LOCK). See page 73 for details.

KEYBOARD BEEPER

A key/button beeper provides useful audible feedback whenever a key/button is pressed. If you want to turn the beep off: 1. Press and hold in the [BAND(SET)] key for 1/2 second to enter the Set mode. 2. Rotate the DIAL knob to select Menu #5 (BEEP BEEP). BEEP 3. Press the [BAND(SET)] key momentarily, then rotate the DIAL knob to change the setting to OFF OFF. OFF 4. Press the [BAND(SET)] key momentarily to save the new setting, then press and hold in the [BAND(SET)] key for 1/2 second to exit to normal operation. 5. To turn the beep back on again, select KEY or KEY+SC (default) in step 3 above. KEY KEY KEY+SC KEY: The beeper sounds when you press any key. KEY KEY+SC: KEY+SC The beeper sounds when you press a key, or when the scanner stops.

DISPLAY BRIGHTNESS

The FT-7900R display illumination has been specially engineered to provide high visibility with minimal disruption of your night vision while you are driving. The brightness of the display is manually adjustable, using the following procedure: 1. Press and hold in the [BAND(SET)] key for 1/2 second to enter the Set mode. 2. Rotate the DIAL knob to select Menu #11 (DIMMER DIMMER). DIMMER 3. Press the [BAND(SET)] key momentarily, then rotate the DIAL knob to select a comfortable brightness level: 1, 2, 3, DIM 1 DIM 2 DIM 3 or DIM.OFF (no illumination). [BAND(SET)] key momentarily to save the 4. Press the new setting, then press and hold in the [BAND(SET)] key for 1/2 second to exit to normal operation.

RF SQUELCH

A special RF Squelch feature is provided on this radio. This feature allows you to set the squelch so that only signals exceeding a certain S-meter level will open the squelch. To set up the RF Squelch circuit for operation, use the following procedure: 1. Press and hold in the [BAND(SET)] key for 1/2 second to enter the Set mode. RF SQL). 2. Rotate the DIAL knob to select Menu #32 (RF SQL 3. Press the [BAND(SET)] key momentarily, then rotate the DIAL knob to select the desired signal strength level for the squelch threshold (OFF S-2 S-3 S-4 S-5 S-6 OFF, OFF S-2, S-3, S-4, S-5, S-6, S-7 S-8, S-9 or S-FULL S-7, S-8, S-9, S-FULL). 4. Press the [BAND(SET)] key momentarily to save the new setting, then press and hold in the [BAND(SET)] key for 1/2 second to exit to normal operation. 5. Finally, rotate the SQL knob fully clockwise.

REPEATER SHIFTS

Your FT-7900R has been configured, at the factory, for the repeater shifts customary in your country. While the 144 MHz shift will be 600 kHz; on 70 cm, the shift may be 1.6 MHz, 7.6 MHz, or 5 MHz (USA version). Depending on the part of the band in which you are operating, the repeater shift may be either downward () or upward (+), and one of these icons will appear at the top of the LCD when repeater shifts have been enabled.
AUTOMATIC REPEATER SHIFT (ARS)
The FT-7900R provides a convenient Automatic Repeater Shift feature, which causes the appropriate repeater shift to be automatically applied whenever you tune into the designated repeater sub-bands in your country. These sub-bands are shown below. If the ARS feature does not appear to be working, you may have accidentally disabled it. To re-enable ARS: 1. Press and hold in the [BAND(SET)] key for 1/2 second to enter the Set mode. 2. Rotate the DIAL knob to select Menu #4 (ARS ARS). ARS [BAND(SET)] key momentarily, then rotate 3. Press the the DIAL knob to change the setting to ON (to enable ON ON Automatic Repeater Shift). 4. Press the [BAND(SET)] key momentarily to save the new setting, then press and hold in the [BAND(SET)] key for 1/2 second to exit to normal operation. With repeater shift activated, you can temporarily reverse the transmit and receive frequencies by pressing and holding in the [TONE(HM/ RV)] key for 1/2 second. Use this feature to display the transmit frequency without transmitting, and to check the strength of signals on a repeater uplink frequency (so as to determine whether of not a particular station is within Simplex range, for example).

ARS-Repeater Subbands

145.1 145.5 146.0 146.4

2-m Version A

147.6 147.4

145.6 145.8

European Version 70-cm

Version A

438.20

439.45

Euro Version 1

433.00

433.40

Euro Version 2

MANUAL REPEATER SHIFT ACTIVATION
If the ARS feature has been disabled, or if you need to set a repeater shift direction other than that established by the ARS, you may set the direction of the repeater shift manually. To do this: 1. Press and hold in the [BAND(SET)] key for 1/2 second to enter the Set mode. 2. Rotate the DIAL knob to select Menu #33 (RPT.MOD RPT.MOD). RPT.MOD 3. Press the [BAND(SET)] key momentarily, then rotate the DIAL knob to select the desired shift among RPT. RPT., RPT. RPT.+ RPT.OFF RPT.+ and RPT.OFF RPT.+, RPT.OFF. 4. Press the [BAND(SET)] key momentarily to save the new setting, then press and hold in the [BAND(SET)] key for 1/2 second to exit to normal operation.
Changing the Default Repeater Shifts
If you travel to a different region, you may need to change the default repeater shift so as to ensure compatibility with local operating requirements. To do this, follow the procedure below: 1. Press and hold in the [BAND(SET)] key for 1/2 second to enter the Set mode. 2. Rotate the DIAL knob to select Menu #39 (SHIFT SHIFT). SHIFT 3. Press the [BAND(SET)] key momentarily, then rotate the DIAL knob to select the new repeater shift magnitude. The shift must be a multiple of 50 kHz. 4. Press the [BAND(SET)] key momentarily to save the new setting, then press and hold in the [BAND(SET)] key for 1/2 second to exit to normal operation. If you just have one odd split that you need to program, dont change the default repeated shifts using this Menu Item! Enter the transmit and receive frequencies separately, as shown on page 34.

DCS OPERATION

Another form of tone access control is Digital Code Squelch, or DCS. It is a newer, more advanced tone system which generally provides more immunity from false paging than does CTCSS. The DCS Encoder/Decoder is built into your FT-7900R, and operation is very similar to that just described for CTCSS. Your repeater system may be configured for DCS; if not, it is frequently quite useful in Simplex operation if your friend(s) use transceivers equipped with this advanced feature. Just as in CTCSS operation, DCS requires that you set the Tone Mode to DCS and that you select a Tone Code. 1. Press the [TONE(REV)] key until DCS appears on the display; this activates the DCS Encoder/Decoder. 2. Now, press and hold in the [BAND(SET)] key for 1/2 second to enter the Set mode, then rotate the DIAL knob to select Menu #9 (DCS.COD DCS.COD). DCS.COD 3. Press the [BAND(SET)] key momentarily to enable the adjustment of the DCS code. 4. Rotate the DIAL knob to select the desired DCS Code (a three-digit number). 5. When you have made your selection, press the [BAND(SET)] key momentarily to save 026 the new setting, then press and hold in the 071 [BAND(SET)] key for 1/2 second to exit to normal operation. Remember that the DCS is an Encode/Decode system, so your receiver will remain muted until a matching DCS code is received on an incoming transmission. Switch the DCS off when youre just tuning around the band!

DCS CODE

243 244

TONE SEARCH SCANNING

In operating situations where you dont know the CTCSS or DCS tone being used by another station or stations, you can command the radio to listen to the incoming signal and scan in search of the tone being used. Two things must be remembered in this regard: You must be sure that your repeater uses the same tone type (CTCSS vs. DCS). Some repeaters do not pass the CTCSS tone; you may have to listen to the station(s) transmitting on the repeater uplink (input) frequency in order to allow Tone Search Scanning to work. To scan for the tone in use: 1. Set the radio up for either CTCSS or DCS Decoder operation (see the previous discussion). In the case of CTCSS, ENC DEC will appear on the display; in the case of DCS, DCS will appear on the display. 2. Press and hold in the [BAND(SET)] key for 1/2 second to enter the Set mode. 3. Rotate the DIAL knob to select Menu #44 (TN FRQ TN FRQ) when CTCSS is selected, or Menu #9 (DCS.COD durDCS.COD) DCS.COD ing DCS operation. 4. Press the [BAND(SET)] key to enable adjustment of the selected Menu Item. 5. Press the [SCAN(SEL)] key momentarily to start scanning for the incoming CTCSS or DCS tone/code. 6. When the radio detects the correct tone or code, it will halt on that tone/code, and audio will be allowed to pass. Press the [BAND(SET)] key momentarily to lock in that tone/code, then press and hold in the [BAND(SET)] key for 1/2 second to save the new setting and exit to normal operation. If the Tone Scan feature does not detect a tone or code, it will continue to scan indefinitely. When this happens, it may be that the other station is not sending any tone. You can press the [SCAN(SEL)] key to halt the scan at any time. Tone Scanning works either in the VFO or Memory modes.

Memory Recall

1. While operating in the VFO mode, press the [V/M(MW)] key momentarily to enter the Memory mode. 2. Rotate the DIAL knob to select the desired channel. If you press the [MHz(PRI)] key momentarily, then rotate the DIAL knob, youll be able to scroll through the memory channels at a rate of 10 channels per click of the DIAL. 3. When selecting a memory channel that has an alpha-numeric Tag (label) appended, press the microphones [B] key momentarily to switch the Memory Channel display between the Frequency format and Alpha-numeric Tag format. 4. To return to the VFO mode, press the [V/M(MW)] key momentarily again. When the radio is already set to the Memory mode, an easy way to recall memories is to enter the microphones key in the memory channel number. For example, to recall memory channel #4, press [0] [0] [4].

Memory Offset Tuning

Once you have recalled a particular memory channel, you may easily tune off that channel, as though you were in the VFO mode. 1. With the FT-7900R in the MR (Memory Recall) mode, select the desired memory channel. 2. Now press the [BAND(SET)] key momentarily; the icon will appear on the display. 3. Rotate the DIAL knob, as desired, to tune to a new frequency. The synthesizer steps selected for VFO operation on the current band will be the steps used during Memory Tuning. 4. If you press and hold in the [SCAN(SEL)] key for 1/2 second during Memory Tuning, the data will now have been copied to VFO, although the original memory contents will remain intact on the previously-stored channel. 5. If you wish to return to the original memory frequency, press the [BAND(SET)] key momentarily. The icon will disappear.

Deleting Memories

With 1000 Regular memories available (except memory channel 1), there frequently 1 are situations where you may desire to delete certain memorized frequencies. The procedure for deleting a channel is quite simple: 1. Press the [V/M(MW)] key, if needed, to enter the Memory mode. 2. Press and hold in the [V/M(MW)] key for 1/2 second, then rotate the DIAL knob to select the memory channel to be deleted. Note that memory channel 1 may not be deleted. 1 3. Press the [SCAN(SEL)] key momentarily. The display will revert to memory channel 1. If you rotate the DIAL knob to the location you just deleted, you will observe that it 1 is now invisible. Note: Once deleted, the channel data cannot be recovered.

Severe Weather Alert

In the event of extreme weather disturbances, such as storms and hurricanes, the NOAA (National Oceanic and Atmospheric Administration) sends a weather alert accompanied by a 1050 Hz tone and subsequent weather report on one of the NOAA weather channels.

SCANNING

The FT-7900R allows you to scan just the memory channels, the entire operating band, or a portion of that band. It will halt on signals encountered, so you can talk to the station(s) on that frequency, if you like. Scanning operation is basically the same in each of the above modes. Before you begin, take a moment to select the way in which you would like the scanner to resume scanning after it halts on a signal.
Setting the Scan-Resume Technique
Three options for the Scan-Resume mode are available: BUSY: BUSY In this mode, the scanner will halt on a signal it encounters. Two seconds after the carrier has dropped because the other station(s) ceased transmission, the scanner will resume. TIME: TIME In this mode, the scanner will halt on a signal it encounters, and will hold there for five seconds. If you do not take action to disable the scanner within five seconds, the scanner will resume even if the stations are still active. HOLD: HOLD In this mode, the scanner will halt on a signal it encounters. It will not restart automatically; rotate the DIAL knob to re-initiate scanning if you wish to resume. To set the Scan-Resume mode: 1. Press and hold in the [BAND(SET)] key for 1/2 second to enter the Set mode. SCAN 2. Rotate the DIAL knob to select Menu #37 (SCAN SCAN). 3. Press the [BAND(SET)] key momentarily, then rotate the DIAL knob to select the desired scan-resume mode. 4. Press the [BAND(SET)] key momentarily to save the new setting, then press and hold in the [BAND(SET)] key for 1/2 second to exit to normal operation. Note: The default condition for this Menu Item is BUSY.

VFO SCANNING

This mode allows you to scan the entire current operating band. 1. Select the VFO mode by pressing the [V/M(MW)] key, if necessary. 2. Press and hold in the [SCAN(SEL)] key for 1/2 second, then rotate the DIAL knob to select the bandwidth for the VFO scanner. Available selections are 1 MHz, 2 MHz, 5 MHz, ALL, PMS-X, and BAND. ALL: The scanner will sweep all frequencies between 108 - 520 MHz and 700 -999.990 ALL MHz. PMS-X: PMS-X The scanner will sweep frequencies within the currently-selected PMS frequency pair (X is PMS memory channel number). See page 47 for details. X BAND: BAND The scanner will sweep frequencies only on the current band. 3. Press the [SCAN(SEL)] key momentarily to start scanning. 4. The P-XX indication will appear on the display if you P-XX P-XX engage PMS scanning, while the P SC indication will P SC appear on the display when other scanning modes are engaged. 5. If and when the scanner encounters a signal strong enough to open the squelch, the scanner will halt temporarily; the decimal point of the frequency display will blink during this Pause condition. 6. The scanner will then resume according to the Scan-Resume mode selected in the previous section. 7. To cancel scanning, press the [SCAN(SEL )] key momentarily again (or press the microphones PTT key). 1) When you start scanning, the FT-7900R will be changing frequency in the upward direction. If you want to change direction of the scan while it is underway, rotate the DIAL knob one click in the opposite direction (in this case, one click counterclockwise). Youll see the scanner turn around and change frequency downward! 2) Pressing and holding in the microphones [UP] or [DWN] key will cause the scanner to sweep frequencies only on the current band. If you would like the scanner not to be restricted to the current band, you may change Menu #46 (VFO.BND) to allow the scanner to hop to the low edge of the next-highest band when the VFO frequency reaches the high end of the current band (or vice- versa). See page 77 for details.

MEMORY SCANNING

Memory scanning is similarly easy to initiate: 1. Set the radio to the Memory mode by pressing the [V/M(MW)] key, if necessary. 2. Press the [SCAN(SEL)] key to initiate scanning. 3. As with VFO scanning, the scanner will halt on any signal encountered that is strong enough to open the squelch; it will then resume scanning according to the Scan-Resume mode set previously. 4. To cancel scanning, press the [SCAN(SEL)] key again (or press the microphones PTT key). You may initiate the memory channel scan by pressing and holding in the microphones [UP] or [DWN] key.
How to Skip (Omit) a Channel During Memory Scan Operation
Some continuous-carrier stations like a Weather Broadcast station will seriously impede scanner operation if you are using the Carrier Drop Scan-Resume mode, as the incoming signal will not pause long enough for the transceiver to resume scanning. Such channels may be Skipped during scanning, if you like: 1. 2. 3. 4. 5. Set the radio to the Memory Mode by pressing the [V/M(MW)] key, if necessary. Rotate the DIAL knob to select the Memory Channel to be skipped during scanning. Press and hold in the [BAND(SET)] key for 1/2 second to enter the Set mode. Rotate the DIAL knob to select Menu #40 (SKIP SKIP). SKIP Press the [BAND(SET)] key momentarily, then rotate the DIAL knob to SKIP The current Memory ChanSKIP. SKIP nel will now be ignored during scanning. The small SKIP icon will also appear when you recall the SKIP SKIP Skipped memory channel manually. The ONLY seONLY ONLY lection is used for Preferential Memory Scan, described in the next column. 6. Press the [BAND(SET)] key momentarily to save the new setting, then press and hold in the [BAND(SET)] key for 1/2 second to exit to normal operation. 7. To re-institute a channel into the scanning loop, select OFF in step 5 above (the Skipped OFF OFF channel will still be accessible via manual channel selection methods using the DIAL knob in the MR mode, whether or not it is locked out of the scanning loop).

Preferential Memory Scan

The FT-7900R also allows you to set up a Preferential Scan List of channels which you can flag within the memory system. These channels are designated by a icon when you have selected them, one by one, for the Preferential Scan List. When you initiate memory scanning, beginning on a channel with the icon appended, only those channels bearing the icon will be scanned. If you initiate scanning on a channel which does not have the icon appended, you will scan all channels including those with the icon appended. Here is the procedure for setting up and using the Preferential Scan List: 1. Press the [V/M(MW)] key momentarily to enter the Memory Recall mode, if you are not using memories already. 2. Rotate the DIAL knob to select the channel which you wish to add to the Preferential Scan List. 3. Press and hold in the [BAND(SET)] key for 1/2 second to enter the Set mode. 4. Rotate the DIAL knob to select Menu #40 (SKIP SKIP). SKIP [BAND(SET)] key momentarily, then rotate 5. Press the the DIAL knob to ONLY The current channel is listed ONLY. ONLY on the Preferential Scan List. 6. When you have made your selections, press the [BAND(SET)] key momentarily to save the new setting, then press and hold in the [BAND(SET)] key for 1/2 second to exit to normal operation. 7. To remove a channel from the Preferential Scan List, select OFF in step 5 above. OFF OFF To initiate Preferential Memory Scan: 1. Press and hold in the [BAND(SET)] key for 1/2 second to enter the Set mode. 2. Rotate the DIAL knob to select Menu #38 (SCN MD SCN MD). 3. Press the [BAND(SET)] key momentarily, then rotate the DIAL knob to ONLY ONLY. ONLY 4. Press the [BAND(SET)] key momentarily to save the new setting, then press and hold in the [BAND(SET)] key for 1/2 second to exit to normal operation. 5. Now, press the [SCAN(SEL)] key momentarily to initiate Preferential Memory Scanning. Only the channels which have the icon appended to the channel number will be scanned. 6. To cancel Preferential Memory Scanning, select MEM in step 3 above. MEM MEM

Memory Bank Scan

When the Memory Bank feature is engaged, the scanner sweeps only memory channels in the current Memory Bank. However, if the Memory Bank Link Scan feature is enabled, you may sweep the memory channels in several Memory Banks which you have selected. To enable the Memory Bank Link Scan feature: 1. Set the radio to the Memory mode by pressing the [V/M(MW)] key, if necessary. 2. Press and hold in the [SCAN(SEL)] key for 1/2 second, then rotate the DIAL knob to select the first Memory Bank (BANK 1 ~ BANK20 you wish to sweep usBANK20) BANK 1 BANK20 ing Memory Bank Link Scan. 3. Press the [SCAN(SEL) key momentarily. The current Memory Bank will now be swept during Memory Bank Scan. A decimal point will be appended on the Memory Bank number indication. 4. Repeat steps 2 and 3 above, to append the decimal point to any other Memory Banks you wish to sweep. 5. Now, press and hold in the [SCAN(SEL) key for 1/2 second to initiate scanning. 6. To remove a Memory Bank from the Memory Bank Link Scan, repeat step 2 and 3 above, to delete the decimal point from the Memory Bank number indication.

VFO Priority

1. Recall the memory channel you wish to use as the Priority frequency. 2. Now set the FT-7900R for operation on a VFO frequency. 3. Press and hold in the [MHz(PRI)] key for 1/2 second to activate the VFO Priority mode. The display will remain on the VFO frequency, but every five seconds the FT-7900R will check the Priority Channel (memory channel) for activity. 4. Press and hold in the [MHz(PRI)] key for 1/2 second to disable the VFO Priority mode and exit to regular VFO operation.

Memory Priority

1. Store the frequency you wish to be the Priority Channel into memory channel 1. 2. Now set the FT-7900R for operation on another memory channel. 3. Press and hold in the [MHz(PRI)] key for 1/2 second to activate the Memory Priority mode. The display will remain on the current memory channel frequency, but every five seconds the FT-7900R will check the Priority Channel (memory channel 1 for activity. 4. Press and hold in the [MHz(PRI)] key for one second to disable the Memory Priority mode and exit to regular memory operation. When the Memory Bank feature is activated, the FT-7900R will check the lowest memory channel in the Memory Bank as the priority channel.

HOME Priority

1. Recall the memory channel you wish to use as the Priority frequency. 2. Now set the FT-7900R for operation on a HOME channel. 3. Press and hold in the [MHz(PRI)] key for 1/2 second to activate the HOME Priority mode. The display will remain on the HOME channel frequency, but every five seconds the FT-7900R will check the Priority Channel (memory channel) for activity. 4. Press and hold in the [MHz(PRI)] key for 1/2 second to disable the HOME Priority mode and exit to regular Home channel operation.

WX Priority

1. Recall the memory channel you wish to use as the Priority frequency. 2. Now set the FT-7900R for operation on a WX channel by pressing and holding in the [LOW(ACC)] key for 1/2 second. 3. Press and hold in the [MHz(PRI)] key for 1/2 second to activate the WX Priority mode. The display will remain on the WX channel frequency, but every five seconds the FT7900R will check the Priority Channel (memory channel) for activity. 4. Press and hold in the [MHz(PRI)] key for 1/2 second to disable the WX Priority mode and exit to regular WX channel operation.

Item #

Menu Item
APO AR BEP AR INT ARS BEEP CLK.SFT CWID CW WRT DCS.COD DCS.N/R DIMMER DT DLY DT SPD DT WRT EDG.BEP HM/REV HYPER I NET INT CD INT MR LOCK MIC NAME

Function

Selects the Automatic Power Off time (time before power goes off). Selects the ARTS beep mode. Selects the Polling Interval during ARTS operation. Activates/deactivates the Automatic Repeater Shift feature. Enables/disables the beeper. Shifting of CPU clock frequency. Enables/disables the CW identifier during ARTS operation. Stores your callsign into the CW identifier. Setting the DCS code. Selects Normal or Inverted DCS coding. Setting of the Display brightness level. Setting of the DTMF Autodialer Delay Time. Setting of the DTMF Autodialer Sending Speed. Loading of the DTMF Autodialer Memories. Enables/Disables the Band-edge beeper while selecting the frequency by the DIAL knob. Selects the alternate function of the [TONE(HM/RV)] key and primary function of the [V/M(MW)] key. Enables/disables the Automatic Writing feature for the Hyper Memory. Selects the Internet Connection mode. Selects the Access Number (DTMF digit) for WIRESTM operation. Selects the Access Number (DTMF code) for non-WIRESTM Internet Link System access. Selects the Control Locking lockout combination.
Available Values (Default: Bold Itaric)
OFF/0.5 H ~ 12.0 H INRANG/ALWAYS/OFF 25sec/15sec ARS.ON/ARS.OFF ( ) KEY/KEY+SC/OFF SFT.ON/SFT.OFF TX ON/TX OFF --104 DCS codes (023) TRX N/RX R/TX R/TRX R DIM 1/DIM 2/DIM 3/DIM.OFF 50MS/100MS/250MS/ 450MS/750MS/1000MS 50MS/75MS/100MS --BEP.ON/BEP.OFF REV/HOME MANUAL/1-AUTO/AUTO INT.COD/INT.MEM CODE 0 ~ 9/A/B/C/D/E/F (CODE 1) d- 1 ~ d16 LK KEY/LK DIAL/LK K+D/ LK PTT/LK P+K/LK P+D/ LK ALL MH-48/MH-42 FREQ/ALPHA
Selects the microphone type to be used. Toggle the display indication of the Memory/Home channel between frequency and the channels Alpha-numeric Tag. NM WRT Stores Alpha-Numeric Tags for the Memory/Home channels. --PKT.MIC Enables/disables the microphone input during Packet operation. MIC.ON/MIC.OFF PKT.SPD Sets the transceivers circuitry for the Packet baud rate to be used. 1200bps/9600bps PRG.PNL Programming the alternate (press and hold in) function of the front WX/REV/RPTR/ panels [LOW(ACC)] key. SQ.OF/LOCK/DIM PRG P1(ACC) Programming the microphones [P1]/[ACC] button assignment. SQ.OF/TCAL/SSCH/ARTS/WX/ PRG P2(P) Programming the microphones [P2]/[P] button assignment. TN.FQ/DCSC/RPTR/PRI/ PRG P3(P1) Programming the microphones [P3]/[P1] button assignment. LOW(#31)/TONE(#30)/MHz/REV/ PRG P4(P2) Programming the microphones [P4]/[P2] button assignment. HOME/BAND(#28)/V/M(#29)/SCAN RF SQL Adjust the RF SQL threshold level. OFF/S-2 ~ 9/S-FULL RPT.MOD Sets the Repeater Shift Direction. RPT.OFF/RPT.--/RPT.+ ( ) PRI.RVT Enables/Disables the Priority Revert feature. RVT.ON/RVT.OFF RX MOD Selects the Receiving mode. AUTO/FM/AM S SRCH Selects the Smart Search Sweep mode. SINGLE/CONT SCAN Selects the Scan-Resume mode. TIME/BUSY/HOLD SCN MD Selects the Memory Scan channel-selection mode. MEM/ONLY SHIFT Sets the magnitude of the Repeater Shift. 0.00 ~ 99.95 MHz ( ) SKIP Selects what action will happen on a flagged Memory Channel. OFF/SKIP/ONLY SPLIT Enables/Disables split CTCSS/DCS coding. SPL.OFF/SPL.ON SQL.TYP Selects the Tone Encoder and/or Decoder mode. OFF/ENC/ENCDEC/ REV TN/DCS AUTO/5.0 k/10.0 k/12.5 k/ STEP Sets the Synthesizer steps. 15.0 k/20.0 k/25.0 k/ 50.0 k/100 k TN FRQ Sets the CTCSS Tone Frequency. 50 CTCSS Tones (100 Hz) TOT Sets the Time-Out Timer. 1 ~ 30 minutes or OFF (6 minutes) VFO.BND Selects or disables the VFO band edge limiting for the current band. BND.ON/BND.OFF WID.NAR Reducing the MIC Gain (and Deviation). WIDE/NARROW WX ALT Enables/disables the Weather Alert Scan. ALT.ON/ALT.OFF

Menu #43 [STEP] Function: Sets the Synthesizer steps. Available Values: AUTO/5.0 k/10.0 k/12.5 k/15.0 k/20.0 k/25.0 k/50.0 k/100 k Default: Depends on the band of operation. Note: 5 kHz and 15 kHz steps are not available for use on above 700 MHz. Menu #44 [TN FRQ] Function: Sets the CTCSS Tone Frequency. Available Values: 50 Standard CTCSS Tones Default: 100 Hz Note: This Menu Item can be set independently for each band, and independently in each memory. Menu #45 [TOT] Function: Sets the Time-Out Timer. Available Values: 1 - 30 minutes or OFF Default: 6 minutes
CTCSS TONE FREQUENCY (Hz)
67.0 82.5 100.0 123.0 151.4 171.3 189.9 210.7 250.3 69.3 85.4 103.5 127.3 156.7 173.8 192.8 218.1 254.1 71.9 88.5 107.2 131.8 159.8 177.3 196.6 225.7 74.4 91.5 110.9 136.5 162.2 179.9 199.5 229.1 77.0 94.8 114.8 141.3 165.5 183.5 203.5 233.6 79.7 97.4 118.8 146.2 167.9 186.2 206.5 241.8
Menu #46 [VFO.BND] Function: Selects or disables the VFO band edge limiting for the current band. Available Values: BND.ON/BND.OFF Default: BND.ON BND.ON: When the VFO frequency reaches the high band edge of the current band, the VFO frequency will jump to the low band edge of the current band (or vice versa). BND.OFF: When the VFO frequency reaches the high edge of the current band, the VFO frequency will jump to the low band edge of the next band (or vice versa). Menu #47 [WID.NAR] Function: Reducing the MIC Gain (and Deviation). Available Values: WIDE/NARROW Default: WIDE Note: This Menu Item can be set independently for each band. Menu #48 [WX ALT] Function: Enables/disables the Weather Alert Scan feature Available Values: ALT.ON/ALT.OFF Default: ALT.OFF
AUTO MODE PRESET OPERATING PARAMETERS

USA Version

FREQENCY RANGE (MHZ) 108.000 - 137.000 137.000 - 144.000 144.000 - 148.000 148.000 - 156.000 156.000 - 157.450 157.450 - 160.600 160.600 - 160.975 160.975 - 161.500 161.500 - 162.900 162.900 - 174.000 174.000 - 222.000 222.000 - 225.000 225.000 - 300.000 300.000 - 336.000 336.000 - 420.000 420.000 - 450.000 450.000 - 470.000 470.000 - 520.000 700.000 - 800.000 803.000 - 999.990 Cellular Blocked MODE AM FM FM FM FM FM FM FM FM FM FM FM FM AM FM FM FM FM FM FM STEP 25 kHz 12.5 kHz 5 kHz 12.5 kHz 25 kHz 12.5 kHz 25 kHz 12.5 kHz 25 kHz 12.5 kHz 50 kHz 5 kHz 12.5 kHz 100 kHz 12.5 kHz 25 kHz 12.5 kHz 50 kHz 50 kHz 12.5 kHz

EXP Version

 

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