VHF AND UHF TRANSCEIVERS
(VHF transceiver with 10-keypad)
(UHF transceiver with 10-keypad)
(VHF transceiver without 10-keypad)
(UHF transceiver without 10-keypad)
A new direction in Land Mobile radios
Large channel capacity Wide range frequency coverage Lithium-ion battery standard Multiple tone signaling capabilities Built-in MDC 1200 signaling Optional SmarTrunk 3G, voice scrambler, man down and DTMF decoder units
The IC-F33G series is suitable for a variety of needs large or small, mobile or stationary. Whether you are a large-scale construction site, warehouse, hospital or hotel, or a small on the go messenger service, this radio provides the built-in exibility to handle your communication needs. Offering advanced features such as wide frequency range, multiple signaling and loud audio, the IC-F33G series is a rugged and reliable 2-way communications tool. This is the new direction in LMR communications.

Lithium-Ion battery pack

Supplied 1150mAh Li-Ion battery pack, BP231, provides 8/9 hours* of operating time. For longer operating time, use the BP-232 which is rated for a full 15/16 hours*. Li-Ion technology has virtually no memory charging issues. A rugged dual-rail guide securely locks the battery to the radio.
* UHF/VHF, Typical operation Tx:Rx: Standby=5:5:90, power save on
Wide frequency range and large channel capacity
The IC-F33G series covers a wide frequency range in one version (VHF 136174 MHz, UHF 400470MHz or 450512 (520) MHz). The 256 memory channel capacity with 16 memory banks allows you to divide and store a variety of exible channel groupings. Easy memory channel selection with a simple rotation of the rotary channel knob.
Small and lightweight body
The IC-F33G series sheds size and weight compared with previous models, weighing just 285g* (including BP-231) and measuring only 53(W)120(H)32.5(D) mm**. The aluminum die-cast chassis and polycarbonate casing combination have been tested to the MIL standard specications.
* 10.0 oz, VHF version ** 23/32(W)x 423/32(H)x19/32(D) in

iC-f33gt iC-f33gs

iC-f43gt iC-f43gs
Built-in multi-format tone signaling
Use the built-in CTCSS, DTCS, 2-Tone, 5Tone or BIIS capability to set up your own talk groups and quiet stand-by when others are talking. You can also set up selective calls to individuals or control a repeater.
Multiple 2-Tone, Multiple 5-Tone
Encode or decode up to 10 2-Tone, 8 5Tone codes on a single memory channel. This is perfect for professionals who require multiple district paging on one channel. When a matched tone is received, the following items are programmable for each code. Bell icon Answer back Stun Beep sound Auto transmit Scan

OPTIONS

BATTERY PACKS AND CASE
Some options may not be available in some countries. Please ask your dealer for details. Battery packs BP-230 BP-231 BP-232 BP-240 Type and capacity Li-Ion 7.4V/ 800mAh Li-Ion 7.4V/1150mAh Li-Ion 7.4V/2000mAh AAA (LR03) batteries 6 Operating time* (VHF/UHF) 6/6 hours 9/8 hours 16/15 hours Output power (VHF/UHF) 5W/4W 5W/4W 5W/4W 1W

BP-230

BP-231

BP-232

BP-240
* Operating time is approximate time (at 20C). Tx: Rx: standby=5:5:90. Power save on.

REGULAR CHARGER

RAPID CHARGER

BELT CLIPS

8 programmable buttons
The [P0][P3], [], [], [Red] and [Monitor] buttons are programmable to meet specic needs. The [Red] button on the top panel can be assigned as an emergency trigger.
BC-171 BC-147 BC-145 BC-160 MB-93 MB-94

Alphanumeric display

The 8-character alphanumeric display shows channel, bank, tone code and scanning channel names on the display. A separate row of operational icons indicate battery, signal strength, RX/TX and other radio conditions.
BC-171 DESKTOP CHARGER + BC-147 AC ADAPTER Charges the BP-231 in 810 hours (approx.).
BC-160 DESKTOP CHARGER MB-93 : Swivel type. A fast and easy + BC-145 AC ADAPTER way to remove the transceiver Charges the BP-231 in 2 hours (approx.). from your belt. MB-94 : Alligator type. Same as supBC-119N + AD-106 + BC-145 is also plied. available. : Charges the BP-231 in 2 hours (approx.).

LEATHER BELT HANGERS

MULTI-CHARGER

Audio compander

The built-in audio compander reduces noise components and provides clear reception even in narrow band use.
BC-121N+AD-106 (6 pcs.) OPC-656 BC-157 MB-96N MB-96F

Built-in voice scrambler

The IC-F33G series includes a built-in inversion type voice scrambler in all models. When a more secure system is required, the optional voice scrambler unit UT-109 or UT-110 is available.
BC-121N MULTI-CHARGER + AD-106 CHARGER ADAPTER + BC-157 AC ADAPTER Rapidly charges up to 6 battery packs (Six AD-106s are required). Charging time: approx. 2 hours when BP-231 is attached. OPC-656 DC POWER CABLE :For use with the BC-121N. (1220V DC required).
HEADSETS and PTT/VOX UNIT
MB-96N: Swivel type belt hanger. Swivel joint of the MB-93 supplied. MB-96F : Fixed type belt hanger. For use with MB-94.

SPEAKER-MICROPHONES

MDC 1200 compatible
The following selective calling and ANI features are available with the built-in MDC signaling. Radio check Caller ID Call alert Selective call Radio stun/revive Status Pre-xed message

HS-94

HS-95

VS-1L

HS-97

HM-158L

HM-159L

HM-153L

HS-94 : Earhook headset with exible boom microphone. HS-95 : Behind-the-head headset with exible boom microphone. HS-97 : Throat microphone fits around your neck and picks up speech vibration. VS-1L : PTT/VOX unit. Required when using these headsets with the transceiver. INTERNAL UNITS
HM-158L : Compact and durable body with screw-type connector. HM-159L : Full size durable speaker microphone. HM-153L : Durable earphone-microphone with revolving clip.

Other features

8 DTMF autodial memories 2 step reduced power setting Power saver Power on password Busy, repeater lockout functions Optional SmarTrunk 3G unit, UT-117 Programmable wide and narrow channel bandwidth (25/12.5kHz, 30/15kHz) and more.
SP-13 : EARPHONE Provides clear audio in noisy environments. STUBBY ANTENNAS FA-SC56VS : 150162MHz FA-SC57VS : 160174MHz FA-SC73US : 450490MHz
UT-105 SmarTrunk II Board

UT-108 DTMF DECODER

UT-109 VOICE SCRAMBLER UNIT

UT-113 MAN DOWN UNIT

UT-117/S SmarTrunk 3G Boards
UT-105 : Provides SmarTrunk II capabilities. UT-108 : Provides DTMF, Selective call and ANI capabilities. UT-109 : Up to 32 scrambling codes are available.Version 02 is required. UT-110 : Up to 1020 scrambling codes are available. Version 02 is required. UT-113 : Automatically sends an emergency signal when the transceiver is left in a horizontal position for a preset time. UT-117/S : Provides SmarTrunk 3G and SmarTrunk II capabilities. Enhanced calling features available. UT-117S has inversion type voice scrambler.
ANTENNAS FA-SC25V : 136150MHz FA-SC55V : 150174MHz FA-SC25U : 400430MHz FA-SC57U : 430470MHz FA-SC72U : 470520MHz

SPECIFICATIONS

GENERAL

iC-f33gt/gs iC-f43gt/gs

RECEIVER
Frequency range IC-F33GT/GS IC-F43GT/GS
: 136174MHz (U.S.A. and General) 400470MHz (U.S.A. and General) 450512MHz (U.S.A.) 450520MHz (General) : 256 channels/16 banks : 12.5kHz/25kHz, 15kHz/30kHz : 2.5kHz, 3.125kHz (VHF) 5kHz, 6.25kHz (UHF) : 50
Intermediate frequency Sensitivity Squelch sensitivity
: 1st 46.35MHz 2nd 450kHz : 0.25V typ. (at 12dB SINAD) : 0.25V typ. (at threshold)
Number of channels Channel spacing PLL channel step Antenna impedance
Adjacent channel selectivity : 75dB typ. (Wide) 65dB typ. (Narrow) Spurious response Intermodulation Hum and noise ratio Audio output power : 70dB : 74dB typ. : 45dB typ. (Wide) 40dB typ. (Narrow) : 500mW typ.
(at 5% distortion with an 8 load)
Usable temperature range : 30C to +60C; 22F to +140F Power supply requirement : 7.2V DC Current drain (at 7.2V DC; approx.): Transmit VHF/UHF 1.5A/1.7A (at 5W/4W) Receive stand-by 85mA rated output 300mA Dimensions (with BP-231) : 53 (W) 120 (H) 32.5 (D) mm; (projections are not included) 2332 (W) 42332 (H)1932 (D) in Weight (approx.) : 285g; 10.0oz (VHF) 300g; 10.6oz (UHF) (with BP-231 and antenna)
TRANSMITTER : 5W (VHF), 4W (UHF)
External speaker connector: 2-conductor 3.5 (d) mm (18)/8
Applicable U.S. Military Specications
Icom makes rugged products that have been tested to and passed the following MIL-STD requirements and strict environmental standards.
Low Pressure High Temp. Low Temp. Temp. Shock MIL 810C Method Proc. I 500.1 501.1 I 502.1 I 503.1 I Solar Radiation 505.1 I Rain Blowing/Drip 506.1 I, II Humidity 507.1 I, II Salt Fog 509.1 I Dust Blowing 510.1 I Vibration 514.2 VIII, X Shock 516.2 I, II, V Standard MIL 810D Method Proc. 500.2 I, II 501.2 I, II 502.2 I, II 503.2 I 505.2 I 506.2 I, II 507.2 II, III 509.2 I 510.2 I 514.3 I 516.3 I, IV MIL 810E Method Proc. 500.3 I, II 501.3 I, II 502.3 I, II 503.3 I 505.3 I 506.3 I, II 507.3 II, III 509.3 I 510.3 I 514.4 I 516.4 I, IV MIL 810F Method Proc. 500.4 I, II 501.4 I, II 502.4-3 I, II 503.4 I 505.4 I 506.4 I, III 507.4 509.4 510.4 I 514.5 I 516.5 I, IV

Output power

Max. frequency deviation : 5kHz (Wide) 2.5kHz (Narrow) Frequency error Spurious emissions : 2.0ppm : 80dB typ. (VHF) 70dB typ. (UHF) : 46dB typ. (Wide) 40dB typ. (Narrow) : 60100% of max. deviation

SUPPLIED ACCESSORIES

(May differ according to version)
Adjacent channel power : 70dB (Wide), 60dB (Narrow) FM Hum and Noise

VHF Antenna

Audio harmonic distortion : 3% typ. (AF 1kHz, 40% deviation) Modulation limiting External microphone connector : 3-conductor 2.5 (d) mm (110)/2.2k
Measurements made in accordance with EIA/TIA-603. All stated specications are subject to change without notice or obligation.
SmarTrunk II and SmarTrunk 3G are trademarks of SmarTrunk Systems, Inc. All other trademarks are the properties of their respective holders.

UHF Antenna

Belt clip, MB-94

Unit cover

Battery pack, BP-231
1-1-32, Kamiminami, Hirano-ku, Osaka 547-0003, Japan Phone: +81 (06) 6793 5302

Fax: +81 (06) 6793 0013

URL: http://www.icom.co.jp/world/index.html

Count on us!

2380 116th Avenue NE, Bellevue, WA 98004, U.S.A. Phone : +1 (425) 454-8155 Fax : +1 (425) 454-1509 E-mail : sales@icomamerica.com URL : http://www.icomamerica.com
146A Harris Road, East Tamaki, Auckland, New Zealand Phone : +64 (09) Fax : +64 (09) E-mail : inquiries@icom.co.nz URL : http://www.icom.co.nz
Unit 9, Sea St., Herne Bay, Kent, CT6 8LD, U.K. Phone : +44 (01227) 741741 Fax : +44 (01227) 741742 E-mail : info@icomuk.co.uk URL : http://www.icomuk.co.uk
6F No. 68, Sec. 1 Cheng-Teh Road, Taipei, Taiwan, R.O.C. Phone : +886 (02) Fax : +886 (02) E-mail : sales@asia-icom.com URL : http://www.asia-icom.com
Your local distributor/dealer:
Glenwood Centre #150-6165 Highway 17, Delta, B.C., V4K 5B8, Canada Phone : +1 (604) 952-4266 Fax : +1 (604) 952-0090 E-mail : info@icomcanada.com URL : http://www.icomcanada.com
Communication Equipment Himmelgeister Str. 100, D-40225 Dsseldorf, Germany Phone : +49 (0211) 346047 Fax : +49 (0211) 333639 E-mail : info@icomeurope.com URL : http://www.icomeurope.com
Zac de la Plaine, 1, Rue Brindejonc des Moulinais BP 5804, 31505 Toulouse Cedex, France Phone : +33 (5) Fax : +33 (5) E-mail : icom@icom-france.com URL : http://www.icom-france.com
10C07, Long Silver Mansion, No.88, Yong Ding Road, Haidian District, Beijing, 100039, China Phone : +86 (010) 5889 5391/5392/5393 Fax : +86 (010) E-mail : bjicom@bjicom.com URL : http://www.bjicom.com

GUIDE FOR CD

1) COMPOSION

IC_F33_F43_series

F33_F34.pdf F43_F44.pdf FYC F33_F34_A3format.pdf F33_F34_A4format.pdf
F43_F44_A3format.pdf F43_F44_A4format.pdf
F33_F43_MANUAL.pdf F34_F44_MANUAL.pdf

Installer

W_README.txt

2) DESCRIPTION

ar505eng.exe

F33_F34.pdf

The service manual for IC-F33/F34/GT/GS including all service information in this CD. This file is mainly used for viewing on the computer display and checking page order to make printed service manual. Or when you want to find a component, you can find very fast using FIND function (except Board Layout).

F43_F44.pdf

The service manual for IC-F43/F44/GT/GS including all service information in this CD. This file is mainly used for viewing on the computer display and checking page order to make printed service manual. Or when you want to find a component, you can find very fast using FIND function (except Board Layout).
F33_F34_A3format.pdf F43_F44_A3format.pdf
Consists of A3 format pages (Board layout, Mechanical parts and disassembly, and etc.). This file is used for printing out A3 format pages.
F33_F34_A4format.pdf F43_F44_A4format.pdf
Consists of A4 format pages (Circuit description, Adjustment procedures, Parts list, and etc.). This file is used for printing out A4 format pages.

F33_F43_MANUAL.pdf

The instruction manual for IC-F33/F43/GT/GS. The contents of this file is exactly same as supplied instruction manual with product and consists of all A4 format pages. If you have A4 format printer, you can print and make brand new instruction manual any time you want. This file is also very helpful when you want to change or set product setting condition for adjustment or else.

F34_F44_MANUAL.pdf

The instruction manual for IC-F34/F44/GT/GS. The contents of this file is exactly same as supplied instruction manual with product and consists of all A4 format pages. If you have A4 format printer, you can print and make brand new instruction manual any time you want. This file is also very helpful when you want to change or set product setting condition for adjustment or else.
ar505eng.exe is an installation program of Adobe Acrobat Reader 5.0 (English version) for Microsoft Windows 95/98/Me/NT/2000/XP users.
W_README.txt is a readme text about this service manual for Windows user that not installed Acrobat Reader yet.
========================================================================================= Icom, Icom Inc. and Icom logo are registered trademarks of Icom Incorporated (Japan) in the United states, the United Kingdom, Germany, France, Spain, Russia and/or other countries. Acrobat Reader Copyright 1987-2002 Adobe Systems Incorporated. All rights reserved. Adobe, the Adobe logo, Acrobat, and the Acrobat logo are trademarks of Adobe Systems Incorporated. Microsoft and Windows are registered trademarks of Microsoft Corporation in the U.S.A. and other countries. Copyright 2004 Icom Inc. =========================================================================================

SERVICE MANUAL

VHF TRANSCEIVERS

INTRODUCTION

This service manual describes the latest service information for the IC-F33GT/GS and IC-F34GT/GS VHF TRANSCEIVERS at the time of publication.
MODEL ICF33GT ICF34GT ICF33GS ICF34GS CHANNEL SPACING 15.0/30.0 kHz 12.5/25.0 kHz 12.5/20.0/25.0 kHz 15.0/30.0 kHz 12.5/25.0 kHz 12.5/20.0/25.0 kHz SYMBOL USA-01 GEN-01 EUR-01 USA-01 GEN-01 EUR-01 FREQUENCY 136174 MHz 136174 MHz 136174 MHz 136174 MHz 136174 MHz 136174 MHz

To upgrade quality, all electrical or mechanical parts and internal circuits are subject to change without notice or obligation.

DANGER

NEVER connect the transceiver to an AC outlet or to a DC power supply that uses more than 8 V. Such a connection could cause a fire or electric hazard. DO NOT expose the transceiver to rain, snow or any liquids. DO NOT reverse the polarities of the power supply when connecting the transceiver. DO NOT apply an RF signal of more than 20 dBm (100 mW) to the antenna connector. This could damage the transceiver's front end.

ORDERING PARTS

Be sure to include the following four points when ordering replacement parts: 1. 2. 3. 4. 10-digit order numbers Component part number and name Equipment model name and unit name Quantity required

<SAMPLE ORDER>

5030002760 LCD FX-2721 LCD IC-F33GT Main unit 8810009220 Screw BO 2x8 ZK IC-F33GT/GS Chassis 5 pieces 10 pieces
Addresses are provided on the inside back cover for your convenience.

REPAIR NOTES

1. 2. 3. 4. 5. 6. 7. Make sure a problem is internal before disassembling the transceiver. DO NOT open the transceiver until the transceiver is disconnected from its power source. DO NOT force any of the variable components. Turn them slowly and smoothly. DO NOT short any circuits or electronic parts. An insulated turning tool MUST be used for all adjustments. DO NOT keep power ON for a long time when the transceiver is defective. DO NOT transmit power into a signal generator or a sweep generator. ALWAYS connect a 30 dB to 40 dB attenuator between the transceiver and a deviation meter or spectrum analyzer when using such test equipment. 8. READ the instructions of test equipment thoroughly before connecting equipment to the transceiver.
Icom, Icom Inc. and are registered trademarks of Icom Incorporated (Japan) in the United States, the United Kingdom, Germany, France, Spain, Russia and/or other countries.

TABLE OF CONTENTS

SECTION SECTION SECTION SECTION 3 4

4-1 4-2 4-3 4-4 4-5 4-6

SPECIFICATIONS INSIDE VIEWS DISASSEMBLY INSTRUCTIONS CIRCUIT DESCRIPITON

RECEIVER CIRCUITS. 4-1 TRANSMITTER CIRCUITS. 4-3 PLL CIRCUITS. 4-4 POWER SUPPLY CIRCUITS. 4-4 OTHER CIRCUITS. 4-5 PORT ALLOCATIONS. 4-5

SECTION

5-1 5-2

ADJUSTMENT PROCEDURES

PREPARATION. 5-1 SOFTWARE ADJUSTMENTS. 5-4
SECTION SECTION SECTION SECTION

9-1 9-2 9-3 9-4

PARTS LIST MECHANICAL PARTS AND DISASSEMBLY SEMICONDUCTOR INFORMATION BOARD LAYOUTS
MAIN UNIT. 9-1 PA UNIT. 9-3 ANT UNIT. 9-3 FUSE UNIT. 9-3

SECTION SECTION

10 BLOCK DIAGRAM 11 VOLTAGE DIAGRAM
11-1 11-2 MAIN UNIT. 11-1 PA/ANT/FUSE UNITS. 11-3

SECTION 1 SPECIFICATIONS

Frequency coverage Mode Type of emission : 136.000174.000 MHz : FM : VERSION WIDE

GENERAL

MIDDLE N/A
NARROW 11K0F3E (12.5 kHz)

[USA], [GEN] [EUR]

Number of conventional channels Antenna impedance Operating temperature range Power supply requirement Current drain (at 7.2 V DC)

16K0F3E (25.0 kHz)

14K0F3E (20.0 kHz) 8K50F3E (12.5 kHz)
: 256 ch, 16 banks : 50 (nominal) : 30C to +60C (22F to +140F) 25C to +55C : 7.2 V DC nominal (negative ground) : RECEIVING TRANSMITTING Stand-by 85 mA Max. audio 300 mA High (5 W) 1.5 A mm; 2332(W) Low (1 W) 0.7 A 42332(H)
Dimensions (projections not included) : 53.0(W) 120.0(H) 32.5(D) Weight (with BP-231+FA-SC55V-1) : 285 g; 10116 oz (Approx.)

1932(D) in

TRANSMITTER
Output power (at 7.2 V DC) Modulation Maximum permissible deviation Frequency error Spurious emissions Adjacent channel power Audio harmonic distortion Limiting charact of modulator Microphone impedance
: High: 5 W, Low: 1 W : Variable reactance frequency modulation : 5.0 kHz (Wide), 4.0 kHz (Middle), 2.5 kHz (Narrow) : 2.5 ppm : 80 dB (typical) 0.25 W (1 GHz), 1.0 W (1 GHz) : 70 dB min (80 dB typical) for Wide and Middle 60 dB min (70 dB typical) for Narrow : 3% typical (Mod. 1 kHz, 40% deviation) : 60100% of maximum deviation : 2.2 k

RECEIVER

Receive system Intermediate frequencies Sensitivity Adjacent channel selectivity Spurious response Intermodulation rejection ratio Audio output power Squelch sensitivity (at threshold) Output impedance (Audio)
: Double conversion superheterodyne system : 1st IF: 46.35 MHz, 2nd IF: 450 kHz : 0.25 V (119 dBm) typical at 12 dB SINAD 4 dBV (111 dBm) emf typical at 20 dB SINAD : 70 dB min (75 dB typical) for Wide and Middle 60 dB min (65 dB typical) for Narrow : 70 dB : 70 dB min (74 dB typical) 65 dB min (67 dB typical) : 0.5 W typical at 5% distortion with an 8 load : 0.25 V typical :8
Specications are measured in accordance with EIA-152-C/204D, TIA-603 or EN 300 086. All stated specications are subject to change without notice or obligation.

D12 FM mod. to TX VCO circuit (Q16, D10, D13, D501)
"CTCSS/DTCS" signal from D/A conveter IC (IC12, pin 11) "TONE" signal from CPU via low-pass filter (IC22, pin 43)

4-2 TRANSMITTER CIRCUITS

4-2-1 MICROPHONE AMPLIFIER CIRCUIT (MAIN UNIT)
The microphone amplifier circuit amplifies audio signals within +6 dB/octave pre-emphasis characteristics from the microphone to a level needed for the modulation circuit. This transceiver employs the base band IC which is composed of microphone amplifier, compressor, scrambler, limiter, splatter filter, MSK modulator, etc. at the microphone amplifier section. The AF signals (MIC) from the microphone (MC1) are applied to the amplifier (IC23, pins 6, 7). The amplified signals are amplified again at the microphone amplifier section of the base band IC (IC14, pins 3). The amplified signals are passed through or bypass the compressor, scrambler sections of IC14, and are then passed through the high-pass, limiter amplifier, splatter filter sections of IC14. The filtered AF signals from the base band IC (pin 6) are applied to the FM/PM switch (IC13, pins 6, 7), and pass through the low-pass filter (IC6, pins 1, 2). The filtered signals are applied to the D/A converter (IC12, pin 4). The output signals from the D/A converter (IC12, pin 3) are applied to the modulation circuit (D12).
The mixed signals are passed through the D/A converter (IC12, pin 3, 4), and are then applied to the D12 in the TX VCO circuit.
4-2-3 DRIVE/POWER AMPLIFIER CIRCUITS (PA UNIT)
The drive/power amplifier circuits amplify the TX VCO oscillating signal to an output power level. The signal from the TX VCO circuit passes through the T/R switch (MAIN unit; D16), and is amplified at the YGR (Q704), drive (Q702), power (Q701) amplifiers to obtain 5 W of RF power (at 7.2 V DC). The amplified signal is passed through the low-pass filter (L703, L704, C708, C711, C768), power detector (D702, D703), antenna switching circuit (D701) and another lowpass filters (PA unit; L709, C744, C746, C769 / ANT unit; L801, L802, C802, C803, C807), and is then applied to the antenna connector (CHASSIS unit; J1). The bias voltage of the drive (Q702) and power (Q701) amplifiers are controlled by the APC circuit.

4-2-4 APC CIRCUIT (PA AND MAIN UNITS) 4-2-2 MODULATION CIRCUIT (MAIN UNIT)
The modulation circuit modulates the VCO oscillating signal (RF signal) using the microphone audio signals. The AF signals from the D/A converter (IC12, pin 3) change the reactance of varactor diode (D12) to modulate the oscillated signal at the TX VCO circuit (Q16, D10, D13, D501). The modulated VCO signal is amplified at the buffer amplifiers (Q15, Q29) and is then applied to the drive amplifier circuit via the T/R switch (D16). The CTCSS/DTCS signals (CENC0, CENC1, CENC2") from the CPU (IC22, pins 13, 15, 16) are combined at the resistors (R222R224) and are then pass through the lowpass filter (IC6, pins 12, 14). The filtered signals are applied to the D/A converter (IC12, pin 12) via the TONC line. The output signals from the D/A converter (IC12, pin 11) are mixed with the filtered Mic audio signals. The APC circuit protects the drive and power amplifiers from a mismatched output load and selects output power of HIGH or LOW. The power detector circuit (PA unit; D702, D703) detects the transmit power output level and converts it into DC voltage. The output voltage is at a minimum level when the antenna impedance is matched with 50 and is increased when it is mismatched. The detected voltage is applied to the differential amplifier (MAIN unit; IC2; pin 3), and the T2 signal from the D/A converter (MAIN unit; IC12, pin 23), controlled by the CPU (MAIN unit; IC22), is applied to the other input for reference. When antenna impedance is mismatched, the detected voltage exceeds the power setting voltage. Then the output voltage of the differential amplifier (MAIN unit; IC2, pin 4) controls the input bias voltage of the drive (PA unit; Q702) and power (PA unit; Q701) amplifiers to reduce the output power.

APC CIRCUIT

VCC T5V Q704 RF signal from PLL circuit YGR amp. Q702 Driver amp. Q701 Power amp.

PA unit

ANT SW D701

to ANT unit

IC2 APC amp.

T2 TMUT IC501

+ APC control circuit

4-3 PLL CIRCUITS

4-3-1 PLL CIRCUIT (MAIN UNIT)
A PLL circuit provides stable oscillation of the transmit frequency and receive 1st LO frequency. The PLL output compares the phase of the divided VCO frequency to the reference frequency. The PLL output frequency is controlled by the divided ratio (N-data) of a programmable divider. The PLL circuit contains the TX and RX VCO circuits (Q16, Q17, D9D11, D13, D500, D501). The oscillated signal is amplified at the buffer amplifier (Q15). The output signal frequency is doubled at Q14, and is then applied to the PLL IC (IC21, pin 6) after being passed through the bandpass filter (L32, C205, C507). Q500, D502 and D503 switch the filtering frequencies between TX and RX which is controlled by R5V. The PLL IC contains a prescaler, programmable counter, programmable divider and phase detector, etc. The applied signal is divided at the prescaler and programmable counter section by the N-data ratio from the CPU. The divided signal is detected on phase at the phase detector using the reference frequency. If the oscillated signal drifts, its phase changes from that of the reference frequency, causing a lock voltage change to compensate for the drift in the oscillated frequency.
4-3-2 VCO CIRCUITS (MAIN UNIT)
The VCO circuits contains a separate RX VCO (Q17, D9, D11, D500) and TX VCO (Q16, D10, D13, D501). The oscillated signal is amplified at the buffer amplifiers (Q15, Q29) and is then applied to the T/R switch (D16, D17). Then the receive 1st LO (Rx) signal is applied to the 1st mixer (Q6) and the transmit (Tx) signal to the YGR amplifier circuit (PA unit; Q704). A portion of the signal from the buffer amplifier (Q15) is fed back to the PLL IC (IC21, pin 6) via the doubler circuit (Q14) as the comparison signal.

4-4 POWER SUPPLY CIRCUIT

4-1-1 MAIN UNIT VOLTAGE
LINE VCC DESCRIPTION The voltage from the connected battery pack. Common 5 V converted from the VCC line at the +5 regulator circuit (IC17). The output voltage is supplied to the buffer amplifiers (Q21), PLL IC (IC21) etc. Common 5 V converted from the VCC line at the S5 regulator circuit (Q26Q28). The output voltage is supplied to the ripple lter (Q20), etc. Receive 5 V converted from the S5V line at the R5 regulator circuit (Q25). The output voltage is supplied to the tripler (Q22), FM IF IC (IC9), IF amplier (Q7), 1st mixer (Q6), RF amplier (Q5), etc. Transmit 5 V converted from the S5V line at the T5 regulator circuit (Q24). The output voltage is supplied to the APC amplier (IC2), PA unit, etc.

PLL CIRCUIT

RX VCO Buffer Q29 Buffer Q21 Q17, D9, D11, D500 TX VCO Buffer QQ14 Q16, D10, D13, D501 Loop filter 4 Phase detector Programmable counter IC21 LMX2352 Prescaler SCK 15 SO 16 PLST BPF D17 D16 to 1st mixer circuit to transmitter circuit
"LVIN" signal to the CPU (IC22, pin 49)
Programmable divider 45.9 MHz 2nd LO signal to the FM IF IC Tripler (IC9, pin 2) 3 Q22

Shift register

4-5 OTHER CIRCUITS
4-5-1 COMPANDER CIRCUIT (MAIN UNIT)
IC-F33GT/GS/F34GT/GS have compander circuit which can improve S/N ratio and become wide dynamic range. The circuit is composed in the base band IC (IC14). (1) IN CASE OF TRANSMITTING The audio signals from the microphone are applied to the base band IC (IC14, pin 3) via microphone amplifier (IC23). The signals are amplified at the amplifier section, and are then applied to the compressor circuit to compress the audio signals. The signals pass through (or bypass) scrambler section, and are then applied to the limiter section after being passed through the high-pass filter. The filtered signals pass through the splatter filter section, and are then applied to the modulation circuit (D12) via the FM/PM switch (IC13), lowpass filter (IC6) and D/A converter (IC12).

4-6 PORT ALLOCATIONS

4-6-1 D/A CONVERTOR IC (IC12)
Pin Number 10 Port name BAL Description Outputs the modulation balance level control signal. The signal is applied to the buffer amplier (IC24, pin 1). Outputs the TX VCO lock voltage control signal. Outputs the RX VCO lock voltage control signal. Outputs the bandpass filter tuning control signal. The output signal is applied to the bandpass lters (D19, D240). Outputs the bandpass filter tuning control signal. The output signal is applied to the bandpass lters (D14, D15). Outputs the TX control signal. The output signal is applied to the APC amplier (IC2, pin 1).

TLVA RLVA

(2) IN CASE OF RECEIVING The demodulated AF signals from the IF IC are applied to the amplifier section in base band IC (IC14, pin 23), and then pass through the low-pass and high-pass filter section to suppress unwanted signals. The filtered signals pass through (or bypass) scrambler section, and are then applied to the expander circuit to expand AF signals. The signals are applied to the base band ICs amplifier section (IC14, pins 19, 20), and are then applied to the AF amplifier circuit.

BASE BAND IC BLOCK DIAGRAM

3 TXA1

VR1 (HPF)

Compressor

Preemphasis

Limiter

Splatter

TX/RX HPF

Scrambler/ De-scrambler
RXIN SDEC MTDT MTCK MDIR MSCK MDIO MRDF

VR3 (HPF)

RX LPF

Deemphasis

Expander

20 SIGNAL RXA2

MSK Modulator

Control Register

MSK BPF

MSK Demodulator

4-6-2 CPU (MAIN unit; IC22)
Pin number 13, 15, Port name Description Pin Number 74 Port name PTT Description Input port for the PTT switch detection signal. Low: While the PTT switch is pushed. Input port for the noise signal from the FM IF IC (IC9, pin 13). Outputs serial data to the PLL IC (IC21, pin 15) and D/A conver tor (IC12, pin 8). Outputs serial clock signal to the PLL IC (IC21 pin 14), D/A convertor (IC12, pin 7), etc. Input port for the cloning data signal. Outputs the cloning data signal. I/O port for data signals from/to the EEPROM (IC10, pin 5). Outputs AF control signal. Low: While Squelch ON. Outputs clock signal to the EEPROM (IC10, pin 6). Outputs the S5 regulator (Q26Q28) control signal. Low: While the S5 regulator outputs 5 V voltage. Outputs the T5 regulator (Q24) control signal. Low: While transmitting. Outputs the R5 regulator (Q25) control signal. Low: While receiving. Outputs the transmitting mute switch control signal to the mute switch (Q 501). High: While muting.
CENC0 Output the CTCSS/DTCS signals. CENC2 REF PLST PMFM Outputs the reference oscillator correcting voltage. The voltage is applied to the buffer amplier (IC24, pin 3) Outputs strobe signals to the PLL IC (IC21, pin 16). Outputs the FM/PM modulation switching signal to the FM/PM switch (IC13, pin 5). I/O port for the serial data signals from/to the base band IC (IC14, pin 11). Outputs clock signal for the base band IC (IC14, pin 13). Outputs serial data control signal to the base band IC (IC14, pin 14). Input port for transmitting MSK clock signal from the base band IC (IC14, pin 9). Outputs MSK data for transmitting to the base band IC (IC14, pin 10). Input port for the receiving MSK detection signal from the base band IC (IC14, pin 12). Outputs strobe signals to the D/A convertor (IC12, pin 6). Output single tone encoder signal. Outputs beep audio signals. Input por t for single tone decode signal from the base band IC (IC14, pin 21). Input port for CTCSS/DTCS signal from the amplier (IC19, pin 1). Input port for the detect signal for connecting battery packs voltage. Input port for the PLL lock voltage. Input port for the S-meter signal from the FM IF IC (IC9, pin 12). Input port for the transceivers internal temperature detecting signal. Outputs shift signal for reference oscillators frequency. Outputs audio control signal. Low: While outputs audio signals from the speaker.

ADJUSTMENT FREQENCY LIST

CH 5 FREQUENCY 155.000 MHz 155.000 MHz 155.000 MHz 155.000 MHz 136.000 MHZ ADJUSTMENT ITEM TX power Bandwidth TX power Bandwidth TX power Bandwidth TX power Bandwidth TX power Bandwidth TX power CTCSS DTCS Bandwidth TX power Bandwidth TX power Bandwidth : High : Wide : Low 2 : Wide : Low : Wide : High : Narrow : High : Wide : High : 151.4 Hz : 007 : Wide : High : Wide : High : Middle
BEFORE STARTING SOFTWARE ADJUSTMENT
Program the adjustment frequencies into the transceiver using with the CS-F33G before starting the software adjustment. Otherwise, the transceiver can not start software adjustment. CAUTION!: BACK UP the originally programmed memory data in the transceiver before programming the adjustment frequencies. When program the adjustment frequencies into the transceiver, the transceivers memory data will be overwritten and lose original memory data at the same time.

155.000 MHz

7 Microsoft and Windows are registered trademarks of Microsoft Corporation in the U.S.A. and other countries. 8

174.000 MHz 155.000 MHz

CS-F33G ADJ'S SCREEN EXAMPLE

w q r t e

y u i !0 !2 !4 !5 !6 !8 !9 !7 o !1 !3
NOTE: The above values for settings are example only.
Each transceiver has its own specific values for each setting. q: Transceiver's connection state w: Reload adjustment data e: Receive sensitivity measurement r: Connected DC voltage measurement t: PLL lock voltage measurement y: Operating channel select u: RF output power i: FM modulation balance (Narrow) o: FM deviation (Narrow) !0: FM deviation (Wide/Middle) !1: CTCSS/DTCS deviation !2: Squelch level !3: Reference frequency !4: Receive sensitivity (automatic) !5: PLL lock voltage for RX (automatic) !6: PLL lock voltage for TX (automatic) !7: PLL lock voltage for RX (manual) !8: PLL lock voltage for TX (manual) !9: S-meter adjustment

CONNECTION

AC millivoltmeter

To [MIC]

Audio generator
Standard signal generator 0.1 V to 32 mV (127 dBm to 17 dBm) CAUTION! DO NOT transmit while an SSG is connected to the antenna connector. FM deviation meter Attenuator 20 dB or 30 dB RF power meter 0.110 W/50 Frequency counter

to the antenna connector

OPC-478 (RS-232C type) to RS-232C port

OPC-478U (USB type)

to USB port PC

To [SP] JIG cable

SINAD meter

Speaker (8 )

IC-F33G/F34G

JIG CABLE

(SP + ) (SPE ) (GND) 3-conductor 3.5(d) mm (18") plug JIG cable To IC-F33G/F34G [SP] jack (CLONE)

OPC-478/OPC478U

5-2 SOFTWARE ADJUSTMENT (TRANSMITTING)
Select an operation using [] / []keys, then set specied value using [] / [] keys on the connected computer keyboard ADJUSTMENT ADJUSTMENT CONDITION MEASUREMENT UNIT LOCATION PC Check the "LVIN" item on the screen CS-F33G ADJ's screen. VALUE 3.5 V 3.5 V

SOFTWARE ADJUSTMENT (RECEIVING)
Select an operation using [] / []keys, then set specied value using [] / [] keys on the connected computer keyboard Need to adjust "S-METER ADJUSTMENT" after "RX SENSITIVITY ADJUSTMENT" is adjusted. Otherwise , "S-METER ADJUSTMENT" will not be adjusted properly. ADJUSTMENT
RX SENSITIVITY [BPF T1] [BPF T2]

ADJUSTMENT CONDITION

MEASUREMENT UNIT LOCATION
1 Operating Channel : CH5
PC Connect the SINAD meter Minimum distortion Connect the SSG to the antenna connector screen with an 8 load to the [SP] level and set as: jack through the JIG cable. Frequency : 136.000 MHz Level : 10 V* (87 dBm) Modulation : 1 kHz Deviation : 3.5 kHz Receiving
The BPF T1, BPF T2 can be adjustment automatically. q-1: Set the cursor to "BPF ALL" and then push [ENTER] key. q-2: The connected PC tunes BPF T1, T2 to peak levels. or w-1: Set the cursor to one of BPF T1, T2 as desired. w-2: Push [ENTER] key to start tuning. w-3: Repeat w-1 and w-2 to perform additional BPF tuning.
S-METER [S-METER] 1 Operating Channel : CH5
Push the [ENTER] key on the connected computer's key Connect the SSG to the antenna connector board to set "L2" level. and set as: Frequency : 136.000 MHz Level : 14 V* (84 dBm) Modulation : 1 kHz Deviation : 3.5 kHz Receiving Level Receiving : 0.45 V* (114 dBm) Push the [ENTER] key on the connected computer's keyboard to set "L0" level. S e t S Q L l eve l t o close squelch. Then set SQL level at the point where the audio signals just appears.

2 Set the SSG as:

SQUELCH LEVEL [SQL]
1 Operating Channel : CH1 Side Connect speaker to the [SP] Connect the SSG to the antenna connector panel jack through the JIG cable. and set as: Frequency : 155.000 MHz Level : 0.2 V* (121 dBm) Modulation : 1 kHz Deviation : 3.5 kHz Receiving
*The output level of the standard signal generator (SSG) is indicated as the SSG's open circuit.

SECTION 6

[MAIN UNIT]

REF NO.

IC2 IC6 IC8 IC9 IC10 IC12 IC13 IC14 IC15 IC17 IC19 IC20 IC21 IC22 IC23 IC24 IC25

PARTS LIST

DESCRIPTION H/V M. LOCATION
T B B T B B B B T B B T T B B B B 88.1/12.4 55.4/23.8 20.8/41.5 81.5/17 29.7/13.2 38.9/26.2 47.1/24 41.5/13.2 97.3/15.4 93.2/20.2 42.9/39.6 57.3/20.3 79.5/34.1 17.4/22.4 36.9/39.3 56.2/36.9 58.2/33

ORDER NO.

1130007020 S.IC S.IC S.IC S.IC S.IC S.IC S.IC S.IC S.IC S.IC S.IC S.IC S.IC S.IC S.IC S.IC S.IC

X1 X2 X5 X6

S.DCR S.XTL S.XTL S.XTL

DESCRIPTION

CDBCB450KCAY24-R0 CR-781 (15.3 MHz) CR-765 (3.6864 MHz) CR-774 (12.288 MHz)

B B B B B B B B B B T T B T T T B B T T B B B T B
99.2/38.1 93.1/40.3 88.7/36.5 85.9/33.8 84.3/26.5 89.4/32 80.5/22.8 77.2/28.5 70.3/26.6 71.9/23.5 68.7/26.7 68.8/30.4 95.3/31.3 77.8/27.4 81.4/22.4 84.6/25.5 71.6/33.4 80.2/33.5 71.2/34.2 69.4/21.9 69.1/34.3 69.3/22.7 70.6/30.4 74.7/31.9 86.3/25.4
D5 D6 D8 D9 D10 D11 D12 D13 D14 D15 D16 D17 D18 D19 D20 D21 D24 D25 D28 D500 D501 D502 D503 D504

1790001260 1750000940

S.DIO S.DIO S.DIO S.VCP S.VCP S.VCP S.VCP S.VCP S.VCP S.VCP S.DIO S.DIO S.DIO S.VCP S.DIO S.DIO S.VCP S.DIO S.DIO S.VCP S.VCP S.DIO S.DIO S.DIO
DAN202U T106 MA2S077-(TX) MA2S111-(TX) HVC376BTRF HVC376BTRF HVC375BTRF 1SV239 (TPH3) HVC375BTRF HVC350BTRF HVC350BTRF MA2S077-(TX) MA2S077-(TX) MA2S111-(TX) HVC375BTRF MA2S728-(TX) DAN202U T106 HVC375BTRF MA2S728-(TX) RB706F-40T106 HVC376BTRF HVC376BTRF MA2S077-(TX) MA2S077-(TX) ISS400 TE61
T B T B B B B B B B B B T B B B B B B B B B T B
93.6/7.3 27.6/31 86.7/28.6 69.4/30.5 69.1/26.5 73.3/33.7 72/28.4 73.5/23.1 86.1/35.4 87.4/39.5 84.3/18 83.4/22.2 92.9/36.6 94.8/39.1 94.9/33.4 28.4/22.6 96.6/37.7 94.9/34.7 29.8/2.9 68.2/32.2 68.1/24.9 79.9/28.1 80.2/26.7 28.2/24.5

FI1 FI2

2030000150 S.MLH FL-335 (46.350 MHz) 2020001530 CER CFWLB450KFFA-B0 (GFWM450F)

91.3/27.1

R1 R4 R5 R6 R7 R8 R9 R12 R13 R15 R16 R17 R18 R19 R21 R22 R23 R24 R25 R29 R31 R32 R33 R34 R35 R36 R38 R39 R40 R43 R44 R45 R46 R48 R50 R68 R69 R70 R71 R72 R73 R74 R75 R76 R77 R78 R79 R80 R81

7030005090

S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES
T T T T T T T B T T B T T T T T T B B B T T B B B B T B T T T T T B B B B B B B B B B B B B B T B
87.4/14.6 86.3/9.7 86.6/8.1 86/15.7 85.5/13.4 88/10.2 90.5/12.3 90.2/36.8 95.2/40.2 92.2/39.3 89.8/41.2 88.7/36.8 70.8/30.1 91.1/37.6 87.3/41.4 88.5/38.9 86.5/35.6 86.2/22.8 85.7/31.2 89.2/27.5 89.2/33.7 92.2/31.9 90.2/22.9 88.6/21.6 87.2/21.2 81.9/12.6 81.8/12.2 81.4/11.6 81.8/21.3 77.8/14.1 77.9/21.3 77.2/17.9 76.6/20.7 87.2/19.9 84.9/22.8 85.6/15.9 85.6/18.2 80.1/26.4 80.1/25.5 35.5/34.2 39.1/19.5 40.1/19.5 78.5/31 78.7/32 77.2/30.9 75.9/29.7 76.1/32.4 75.1/23.9 47.9/20.8
M.=Mounted side (T: Mounted on the Top side, B: Mounted on the Bottom side)

S.=Surface mount

L701 L702 L703 L704 L705 L706 L707 L708 L709 L712

6200008170 6200009290

S.COL S.COL S.COL S.COL S.COL S.COL S.COL S.COL S.COL S.COL
NL 252018T-4R7J ELJRF 18NJF2 (18) 0.30-0.9-3TR 7.5N 0.30-0.9-4TR 10.5N 0.30-0.9-9TR EXCCL3225U1 ELJRF 47NJF2 (47) 0.30-1.7-7TL 50N 0.35-1.6-8TL 54N LQW18AN47NG00D ERJ2GEJ 151 X (150 ) ERJ2GEJ 472 X (4.7 k) ERJ2GEJ 220 X (22 ) ERJ2GEJ 104 X (100 k) ERJ2GEJ 472 X (4.7 k) ERJ2GEJ 680 X (68 ) ERJ2GEJ 223 X (22 k) ERJ2GEJ 472 X (4.7 k) ERJ2GEJ 471 X (470 ) ERJ2GEJ 472 X (4.7 k) ERJ2GEJ 222 X (2.2 k) ERJ2GEJ 101 X (100 ) ERJ2GE-JPW ERJ2GE-JPW ERJ2GE-JPW ERJ2GE-JPW ERJ2GEJ 221 X (220 ) ERJ2GEJ 101 X (100 )

B B T T T B T T T B

34.4/12.4 18/12.6 28/13.7 24.2/14 19.2/13.7 10.7/15.9 2.3/11.7 32.8/10.5 33.5/16.8 33.2/16.3

[ANT UNIT]

L801 L802
6200008580 S.COL 6200008280 S.COL
0.30-1.4-6TL 32N 0.30-1.7-7TL 50N

T T 5.7/12.4 6.6/9

R701 R703 R704 R705 R706 R708 R709 R710 R715 R726 R730 R732 R733 R734 R735 R736 R737 R738

7030004990 7030004980

S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES
B T B T T B B B T B T T T T T B T B
29.7/10.4 25.4/16.7 19.3/5.2 19.1/2.3 18.1/2.3 12.2/11 9.9/11.5 9.9/9.9 4.9/7.7 28.9/14.2 3.3/8.7 5.8/10.7 3.2/5.7 4.2/14.2 6.4/14.6 14.2/13.5 3.2/6.7 18/11.6

7030005080 S.RES

ERJ2GEJ 823 X (82 k)

3.2/14.1

C801 C802 C803 C807

4030017410 4030017620

S.CER S.CER S.CER S.CER
ECJ0EB1E102K ECJ0EC1H050B ECJ0EC1H240J ECJ0EC1H100C

T T T T

10/7 6.5/7.1 3.2/10.6 4/11.9

0910058461 PCB

B 6196A

[FUSE UNIT]

6200006190 S.COL

BLM21PG300SN1D

T 10.2/6
C701 C702 C703 C704 C705 C706 C707 C708 C711 C715 C716 C718 C719 C720 C722 C723 C724 C725 C727 C728 C729 C731 C732 C733 C734 C742 C744 C745 C746 C748 C750 C751 C752 C753 C754 C755 C756 C757 C758 C759 C760 C761 C763 C767 C768

4030017520

S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER
ECJ0EB1E102K ECJ0EC1H101J ECJ0EC1H470J ECJ0EC1H180J C1608 CH 1H 180J-T C1608 CH 1H 220J-T ECJ0EB1E102K ECJ0EC1H680J C1608 CH 1H 560J-T ECJ0EC1H470J ECJ0EB1C103K ECJ0EB1E102K ECJ0EB1E102K ECJ0EC1H820J ECJ0EB1E102K ECJ0EB1E102K ECJ0EB1E102K ECJ0EB1E102K ECJ0EC1H470J ECJ0EC1H050B ECJ0EC1H101J ECJ0EC1H150J ECJ0EB1E102K ECJ0EC1H470J ECJ0EC1H110J ECJ0EB1E102K ECJ0EC1H150J ECJ0EC1H1R5B ECJ0EC1H240J ECJ0EC1H470J ECJ0EC1H110J ECJ0EC1H180J ECJ0EB1E102K ECJ0EB1E102K ECJ0EB1E102K ECJ0EC1H470J ECJ0EC1H470J ECJ0EB1E102K ECJ0EC1H470J ECJ0EB1E102K ECJ0EB1E102K ECJ0EB1E102K ECJ0EB1C103K ECJ0EB1E102K ECJ0EC1H0R3B