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Kenwood TS-480


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Kenwood TS-480About Kenwood TS-480
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Kenwood TS 480 SAT Operation 1/3


User reviews and opinions

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Comments to date: 8. Page 1 of 1. Average Rating:
Bowser 4:49am on Friday, October 15th, 2010 
Garmin lost quality I just received my Garmin factory refurbished nuvi 765T GPS unit. It was broken upon delivery. Ignored 1-star reviews and ordered anyways Well read most of the reviews and focused on the positives.
moesala 10:38pm on Saturday, October 9th, 2010 
Setting up way-points to control a Acquires Satellites Quickly","Easy To Read","Reliable Performance Vague user instructions It's easy to use and is very accurate. It takes the worry out of traveling. Acquires Satellites Quickly","Compact","Easy Menus","Easy To Read".
stezz 11:39pm on Tuesday, September 21st, 2010 
Worked better than a Magellan 1700 I had orignally ordered and returned a Magellan 1700. It was great as to size of screen. Misshipped orders I would not rate the experience very highly. I still feel I was not shipped the correct unt TWICE!!
nova 3:06pm on Tuesday, July 6th, 2010 
Do not purchase. Nothing, unit would not turn on Unit didnt turn on out of the box ; Short and bulky power cable Upgraded the firmware right out of the box. I bought this because of all the features, especially the 3.5mm output jack.
Generic Ultram 2006 10:49am on Thursday, June 24th, 2010 
Had been looking at this model for the last year or so. Seeing as how Garmin and other manufacturers are removing options such as MP3. Being able to dock it and not ALSO plug in the connector is nice.
udabeu 5:08pm on Sunday, May 16th, 2010 
Overall I am very satisfied with the Garmin 765t. It has a bright crisp display and with 3D lane assist makes it easy to follow the directions. I highly recommend Garmin units and still do ...  All Great Garmin features Touch Screen is HORRIBLE
tonywhelan 3:42pm on Tuesday, May 4th, 2010 
"Great unit, Points of interests, great screen resolution" Map detail, fast re-routing. "well; when i turned 16 i was given a 2007 dodge ram. everything about it was great; but i NEEDED a GPS. so i asked for one for christmas. "I have been a 765T owner for about a month now and am a witness to its whirlwind of features, ease of use, and simplistic setup. First.
Lordjim 6:13pm on Sunday, March 14th, 2010 
This thing has a dangerous flaw. The "Nearest intersection" shown in "Where am I? This thing is a mixed bag. Many good points, not quite as many bad points. Sometimes this thing is dead on the money. Too often tho. The amount of information contained in memory is staggering. Restaurants, hotels, with phone numbers is impressive.

Comments posted on are solely the views and opinions of the people posting them and do not necessarily reflect the views or opinions of us.





This in-depth manual for the TS-480 was written by the engineers who actually planned and designed the product. It is our hope that this guide will serve to convey the joys of HF and all the benefits of owning and using the TS-480 to whoever reads this guide whether you have already purchased a TS-480, an accomplished operator, thinking of buying a transceiver, or just thinking of taking up Amateur Radio as a hobby. We believe the TS-480 will appeal to everyone.


Design Objectives 2 Development Objectives for the TS-480 Series 5 Circuitry 7 TX circuits 7 RX circuitry 13 Auxiliary Features 19 Features of the Built-in DSP 21 Tips28 Structural Features 36 New Option: Voice Guide & Storage Unit (VGS-1) 42 New Option: ARCP-480 (Freeware) 45 New Option: ARHP-10 (Freeware) 51

TS-480HX TS-480SAT

200W output (HF: 200W50MHz: 100W) 100W output (HF: 100W 50MHz: 100W built-in automatic antenna tuner)

Design Objectives

Determination to create a unique transceiver
The concept of a compact HF transceiver first saw the light of day with Kenwoods TS-50. From then on, such equipment has become an essential part of the Amateur Radio world. Equipment has now evolved with the appearance of multi-band models. In developing this new HF transceiver, Kenwood has boldly chosen not to follow this path, because we wanted to develop a transceiver unlike any other available. If we had developed a product along the same lines as the others currently in the market, the customers would not have found it a very attractive buy and few would choose it. This is why we wanted to develop a unique and attractive Kenwood product, something that would effectively serve to create a new market. It was with these thoughts that we embarked on our new project and began to mull over the details. It was not to be an easy task. After all, every engineer involved in development wants to create something special and innovative. We had to find a way to put it into practice.
Back to basics: The appeal of HF lies in DXing.
The search for a completely new kind of transceiver sounds like it might turn out to be a wild goose chase, and in truth it is in the nature of things that such ideas rarely amount to much. But as part of our brainstorming, we went back to basics. What first emerged as a key concept was this: The appeal of HF lies in DXing. This is simple to say, but maybe more difficult to realize. From here the discussion moved ahead rapidly once it was decided to develop a compact HF transceiver. According to conventional wisdom, a compact HF transceiver is by definition a mobile transceiver, and a fixed, base station is physically large. But we refused to stick to these stereotypes as we fleshed out the concept for a compact HF transceiver designed to make DXing really enjoyable. Even if it were to be a mobile unit, as an HF transceiver we wanted to ensure it would offer the operating ease and basic performance needed to enjoy DXing. Consequently, it should also be able to serve as a fixed station. The typical shack today has been equipped with a computer and there is not a great deal of room available for a large transceiver. This PC-transceiver combination would become even more common. Operating both as a mobile and as a fixed station, this new model would target customers dissatisfied with the compact transceivers currently on the market. This was the concept that we started with.

Adding appeal to fixed station operations
It is now increasingly common to see a PC sitting beside the transceiver in the shack, but we wanted to expand the interaction between computers and transceivers. It was with this in mind that Kenwood came up with the idea of an Internet remote-controlled transceiver. You may be away on a business trip, but you want to operate, or you may want to use a large Yagi antenna out in the suburbs from your downtown apartment. In these and many other ways, fixed station operations are becoming more varied and more difficult. However, laws governing radio transmissions vary from country to country. In Japan, we had just about resigned ourselves to the fact that this could only be implemented as an RX feature when fortunately the law changed: starting January 13, 2004, both TX and RX operations became possible. This made all our development work worthwhile for our market in Japan and worldwide.
Overview of the TS-480 Series
The product concept for the TS-480 Series, as outlined, can be summarized thus: Not simply a compact HF mobile transceiver like the TS-50 and other transceivers on the market, the TS-480 is a completely new type of powerful compact HF transceiver offering the performance and features required for HF DX operations. TX output of 200W (HF), an astounding figure; and up till now, only available from the top-of-the-line models. Transceiver remote control In order to realize all three of these, we started the design process with the following planning objectives: 1. Priority on basic performance that stresses the 1.8 ~ 50 MHz range; 2. Dynamic range on a par with the TS-950; 3. Uncompromising RX performance, AF DSP as standard; 4. A control panel design that ensures top-notch operating ease, so that desired functions can be accessed instantly; 5. Support for a range of different operations as a mobile station and as a full-fledged base station, allowing the user to enjoy HF DX as much as with a conventional fixed station; 6. A quantum leap in power output in a compact chassis, generating 200W even when working off a DC 13.8V supply (in the USA there are no limitations on the power output of mobile transceivers, so it is being described as a power mobile); 7. Internal automatic tuner for the 100W model to make it more versatile and expand the range of possible applications; and 8. Remote control via the Internet. As for the name of the new series, which was intended to reflect our planning objectives, we decided on the 400s in order to express continuity with the popular TS-450 workhorse transceiver. This was because the new product was not simply a compact transceiver but would offer the sort of performance and features Kenwood fans would expect of a 400-series model. A workhorse transceiver that could prove its worth in a variety of places in the shack, in a vehicle, in the field -this was the TS-480 Series being planned by Kenwood.

Development Objectives for the TS-480 Series
The following is an explanation of our development objectives, distinct from the planning objectives. If asked about the origins of the compact HF rig, people outside Japan would no doubt think of the Atlas Series. Following the Atlas, a variety of different products appeared on the market, but it is probably no exaggeration to say that Kenwoods TS-50 was the first in the category of the 100W (HF) compact all-mode transceiver. It is already more than a decade since the TS-50 was launched. Since then, successive models have grown increasingly smaller while adding new features and expanding band coverage to include V/UHF. Today, this category has matured to the point of actually forming a definable market. What we developed in order to stir up and add fresh stimulus to this market was the TS-480 Series. Why a compact 200W transceiver? Why a 100W model with a built-in antenna tuner? Why HF~50MHz coverage? The answers to these questions can be found in our planning objectives. Lets look at the technical background.
The TS-480 concept began with development of the TS-570?
We first started looking in detail at the technical feasibility not of the 200W model but of the model with the internal antenna tuner. Today, there is nothing special about a built-in AT, but for the TS-570 we developed a relay-type AT. This replaced the previous motor-driven variable capacitor type of AT. Naturally this technology was used elsewhere and by other manufacturers, but if applied not to TX but to RX also, it is possible to use it for receiver front-end passive tuning. For transmission purposes, it is smaller than the conventional type of AT of the time, especially with regard to height, making it a good choice for building into a compact set. In 1996, when on a visit to the US to promote the TS-570 a local salesman asked whether we were next going to put an AT into the TS-50. Well, perhaps that was where the TS-480 got its start!
Achieving 200W output in a compact transceiver
In achieving our goal of 200W there was one major constraint namely, we could not raise the voltage of the power supply. The TS-480 Series was to be sold not only in Japan but internationally. If we had been looking only at our domestic market, things would have been different since the output of mobile transceivers here is limited to 50W, but conditions are different abroad, especially in the US. In the US, since there are no limitations on the output of either mobile or fixed stations, mobile transceivers in the several hundred watt class are not unusual. A common pattern for operations is not to hook up a 100W unit to a linear amp and mount a 200W fixed transceiver in a car. Moreover, the most common type of vehicle is a pickup with a 12V battery, so people expect to obtain a 200W output with a regular 13.8V power supply. If one thinks of the way people operate such transceivers here in Japan, a question arises: Why add that much power if it cannot be used as a mobile rig? The TS-480 has been designed with a priority on operating ease. One reason for this is that we saw the TS-480 being used as a fixed station in Japan, where 200W mobile operations are not permitted. Most 200W HF transceivers are high-end and their price reflects this. But in the workhorse class, most models offer only 100W output. So we can say that our new product can fulfill the wishes of those who have received an advanced permit and thus want a 200W rig as long as it is not expensive.

Fig. 1 illustrates TX IM characteristics with 200W output at 14MHz, while the second graph (Fig. 2) charts high-frequency spurious emissions. Fig. 1: TX IMD (output 200W)
Fig. 2: TX Spurious emissions
SPS (separate power sources) [TS-480HX only]
SPS is shorthand for operating at 200W using two 100W 13.8V power sources. To generate a 200W output from 13.8V requires a maximum (total) current of 41A. As previously explained, the TS-480HX employs a pair of 100W final amps. What the SPS design does is to supply these amps from two separate power supplies, as shown in Fig. 3 below. The use of two power supplies may appear inconvenient, but in actual fact this arrangement is quite practical. Many customers already possess a 100W class power supply, so when they acquire this 200W transceiver they do not have to make an additional purchase of a new 200W class power supply. It is possible for them to make use of the 100W unit in their possession. The PS-53 power supply is specified for the TS-480; however, as long as it can produce 20.5A or more continuously at 13.8V, other power supplies can be used. Also, it is possible to operate this transceiver using a single power supply that can produce at least 41A continuously; note, however, that two power cables would still be needed. Fig. 3: SPS schematic diagram

DC1 connector

Drive amp Other circuits Final amp 1
DC power supply 1 (13.8V, 20.5A)

Final amp 2

DC power supply 2 (13.8V, 20.5A)


DC2 connector
Failsafe device (some TS-480HX versions only)
The use of two power supplies and two final amps in parallel is something that has not been tried before, and naturally there may be some anxiety on the part of the user regarding what would happen if just one of the power supplies suddenly failed. Such a situation would be handled safely, since the TS-480 series is equipped with several failsafe devices. Should a difference of 1V or more be detected between the two power supplies: RX ONLY appears in the display and transmission operations are inhibited. Should the voltage of one power supply drop to zero: if the failed supply is DC1 (Fig. 3), the transceiver is powered down; if DC2 fails, RX ONLY appears in the display and only RX operations are possible. Should a final amp malfunction: if, for example, the output of one of the final amps fell, resulting in an imbalance, PA-ERROR appears in the display and transmission operations are terminated. In addition, there is the usual complement of failsafe devices, including output control triggered by high temperature, high voltage detection, and SWR output control. These failsafe devices will provide temporary protection for the internal circuitry; however, should such a situation arise you should not continue using the transceiver, but rather deal with the problem in accordance with the troubleshooting guidelines.

100W final section

Like the 200W final section, the 100W final section uses 2SC2782 transistors. The drive and peripheral circuits are virtually identical to those in the 200W model, enabling 100W output for the HF~50MHz bands. For the Japanese market, there are 50W and 10W (50MHz: 20W) models, allowing buyers to choose whichever best suits them that is, their license and their intended use (mobile or fixed). It should be pointed out that it is possible to increase the output of these models: the 50W model to 100W, and the 10W model to 50W or 100W. A TS-480 owner who acquires a more advanced license and wants to make use of this capability should go to the nearest service center. Note that it is not possible to upgrade to 200W output. Also, 50W mobile transceiver warranty certification is available for both 200W and 100W models used as fixed stations. Ever since the TS-570, Kenwood has adopted a method of converting transceivers to higher output specifications that does not require a kit. Conversion cannot be performed by the individual user, but because this method does not depend on finding stock of the appropriate kit it is proving popular.
Antenna tuner (TS-480SAT)
The 100W model is equipped with the relay-driven antenna tuner that was developed for the TS-570. Since there is no variable capacitor, gears or other rotating parts, this antenna tuner is very responsive and trouble-free. Thanks also to the several preset memories supplied for each band, you can instantly call up settings when moving up or down a band. You can see the 200W and 100W final sections in Figs. 4 and 5, respectively.
Fig. 4: 200W final section
Fig. 5: 100W final section with antenna tuner

FM circuit

There were two approaches used for the FM circuit of the conventional all-mode transceiver. Either there was a dedicated modulation circuit using a 10.695MHz crystal, or the modulation was performed by the VCO on the 2nd OSC. The latter was not an option for the TS-480, and since the whole transceiver had to be compact, we did not adopt the former approach. How then is FM handled by the TS-480? What we have employed for the TS-480 is something that is rarely seen these days in ham radios: the reactance modulation approach, which does not have the modulation applied directly to the oscillating circuit. This type of circuit was widely used in the days when a crystal was used to change channels in FM car transceivers, but it dropped from sight when PLL became the norm. It is not a new circuit, but it has excellent characteristics. In the TS-480, this reactance modulation circuit is connected to the output of the DDS, which serves as the source for the PLL reference frequency, so effectively it is modulating the 1st OSC. This approach offers several advantages: Since frequency modulation is not conducted in the TX signal circuitry, even if the TX RF signal is passed through a roofing filter, it will not suffer from any delay distortion caused by the filter; Since there is no need for an oscillator to perform modulation, one-shot frequency management is permitted when transmitting on FM with the same precision as SSB; This approach saves on space and cost. Fig. 6: FM modulation block diagram

RX circuitry

Front end
As explained in the section on development objectives, what distinguishes the TS-480 Series are incomparable features and performance that result from our focus on HF. Of special note are the dynamic range characteristics in the HF bands, demonstrating the fact that, despite the compact dimensions of this transceiver, there has been no design compromise. One of the circuits that is important in determining dynamic range is the first mixer. Now there are some compact transceivers covering HF~V/UHF that are designed to cover all frequency bands with a single mixer. Since HF~50MHz is the home turf for the TS-480 Series, it has an advantage as in regards to the operating conditions for the mixer. Since developing the TS-950, Kenwood has exclusively employed J-FET quad mixers, and the TS-480 is no exception. Fig.7 illustrates the mixer circuit. Fig. 7: RX 1st mixer
How well does it actually perform? Fig. 8 is a graph illustrating the dynamic range characteristics when changing the separation of two interfering signals. For the sake of reference, results for the TS-480 are plotted against those obtained using other compact mobile transceivers (on the market) under the same conditions. Fig. 8: RX dynamic range
Looking at Fig. 8, results higher up the graph indicate wider dynamic range. When the RX frequency is 14.100MHz, and for example there is simultaneous interference from two signals at 14.150MHz and 14.200MHz, with the nonlinearity of the RX section, spurious signals are generated at 14.100MHz and 14.250MHZ, enabling reception. Since the frequency separation at this point is 14.200MHz -14.150MHz = 50kHz, the +50.0KHz point on the horizontal axis of Fig. 8 corresponds to these conditions. Under these conditions, if there were interfering signals that were faintly picked up by the other transceivers in this comparison, the strength of those interfering signals would have to rise by 10~15dB for the TS-480 to begin suffering the same effects. When there is interference in close proximity to the RX frequency, there is no difference between these models, with one notable exception. In this area we are approaching the bandwidth of the roofing filter, so to put it another way, the fact that we can observe a difference between the transceivers at the +50kHz point where the interference is sufficiently eliminated by the roofing

Features useful for 50MHz operations
You discover a DX CW signal during a USB band search! The TS-480 has a feature that is perfect for such times: you can automatically switch to CW transmission by just keying the transmitter (key down) with your CW key, keyer or CW computer program. When scanning 50.110~50.150 with the SSB program scan, if you want to watch carefully at 10kHz intervals just use a slower scan speed. This is also possible with memory scan, but in that case you cannot hear frequencies in between. This allows you to set the scan speed slower by up to 5 points for selected frequencies. The noise blanker, which has a reputation for being very effective in combating even weak noise, is now even better: we have added the ability to adjust the threshold level.
Features useful for mobile operations
The TS-480 is equipped with a newly developed DNL (digital noise limiter). Although the principle and operation of this DNL is quite different, the effect is somewhat like the old ANL (audio noise limiter). Pulse noise is handled by a standard noise blanker, but if you find this is not working very well as a result of a strong signal overlap or because of different types of noise, you should give the DNL a try. In some cases, by processing audio signals with the DSP one can effectively eliminate pulse noise. For details, see the DSP section.
TX tuning is a handy feature to have. It outputs a low-power continuous carrier for adjusting a screw-drive or similar antenna. It allows you to transmit a continuous carrier that is independent of the mode and power of your current operations. Simply assign a PF key to this function. No paddle, but you want to give CW a try? No problem. With mic paddle mode, you can use the up/down keys on your microphone as a simple paddle.

New 5MHz band

US versions are compatible with the new 5MHz band; this also goes for the antenna tuner.
Features of the Built-in DSP

DSP circuit

The digital signal processor equipped on the TS-480 is the 16-bit fixed-point TMS320VC5402 from Texas Instruments, which offers excellent value for the money. Running at 100MHz, it provides double-precision arithmetic operations (equivalent to 32-bit processing), making it more than capable of serving as an AF DSP. Thanks to this, the TS-480 offers many powerful features of use in HF operations.

Fig. 15: NR OFF

Fig. 16: NR1 ON

Fig. 17: NR2 ON

Beat cancel
Beat cancel (BC), as its name implies, is designed to cancel unpleasant beat interference. Like NR1, it uses adaptive filter technology, tracking a beat and canceling it by shaping. It is very similar to a band elimination filter. Even if there are multiple beats, BC can track and cancel them all. However, since BC operates at the AF stage, should powerful beat interference be experienced during DX operations, even though beat cancel works properly, by then the AGC has already attenuated both the interference and the target signal. To combat this sort of beat, IF shift is used to eliminate the interference. Figs. 18 and 19 show how BC cancels beat signals, as monitored by an FFT analyzer. You can see how the three beats present in the signal are removed with almost surgical precision. Fig. 18: BC OFF

Fig. 19: BC ON

There are two methods available for beat cancellation: BC1 and BC2. These have been tuned so that BC1 is effective against weak or continuous beat interference, while BC2 cancels intermittent beat such as a CW Morse signal. (Note that since BC is designed to remove the beat, and does not function in CW mode.)

RX DSP filters

In SSB, AM and FM modes, you can independently set high- and low-cut frequencies for the AF filters to suit operating conditions (slope tune). Fig. 20 illustrates how slope tune works. When there are interfering signals in proximity to the target signal, you can use a high-cut filter and a low-cut filter to remove the signals above and below the target. In SSB mode, installing the optional SSB narrow filter results in even better interference reduction. In AM mode if you select NAR, RX is possible using this SSB IF filter.

Target signal

Target signal Low-cut Hi-cut
Fig. 20: Slope tune in action Listed below are the cutoff frequencies (unit: Hz) that can be chosen; default values are shown in bold.
SSB/FM Low-cut Hi-cut AM Low-cut Hi-cut

4000 5000

In CW and FSK modes, the AF filters function as a VBT, changing bandwidth without altering the center frequency. In CW mode, the center frequency is coupled to the CW pitch, whereas in FSK mode it is determined by the FSK tone and FSK shift frequencies. Fig. 21 shows how it is possible during CW operations to extract a target signal from surrounding interference by changing the AF filter bandwidth (WIDTH).

Fig. 21: Switching WIDTH during CW operations Listed below are the filter bandwidths (unit: Hz) that can be chosen; default values are shown in bold.


1000 2000

1000 1500

When the optional CW filters are installed, the TS-480 will automatically select the optimum IF filter in accordance with the DSP filter bandwidth. Also available are filters for PSK31 and RTTY data mode operations. From the menu, if you select ON for the Available data communications filters, these data communications filters can be used in SSB mode. You can choose from 3 center frequencies and 7 WIDTH settings. Listed below are the filter types (unit: Hz) that can be chosen; default values are shown in bold.

For data communications

Center WIDTH

1500 2400

During PSK31 operations, the center frequency is set to either 1000Hz or 1500Hz. Furthermore, since it is now possible to select an optional CW IF filter in SSB mode, it is possible to narrow the bandwidth.
RX equalizer & TX equalizer
If you use the RX equalizer it is easy to adjust RX audio quality. Take your pick from flat (default), high boost, Formant pass, bass boost, and conventional settings. As a new feature, the TS-480 actually offers two types of high boost and two types of bass boost. TX audio quality can similarly be adjusted with the TX equalizer. It is easy to make any changes to suit your taste: for example, mic characteristics can be corrected, and you can apply compensation to match the characteristics of your own voice. For TX there are now two types of high boost and two types of bass boost, so why not give them a try?
The graph in Fig. 22 plots overall frequency characteristics from mic input to antenna output, illustrating the effect of some of these equalizer settings.
Fig. 22: TX equalizer characteristics (example) If you use the Audio Editor function (ARCP-480), available free for downloading, the options for equalizing expand even more. In addition to a total of 35 types of equalizing samples, it offers tools for freely adjusting such parameters as filter type, cutoff frequency and amount of attenuation. The settings made with the ARCP-480 software can be applied by selecting U (user) from any of the TS-480s equalizer menus. While it is true that neither the built-in equalizers nor the audio editor software provide the same degree of freedom as the graphic equalizers found in audio entertainment equipment, they are useful as a means for tailoring audio quality to suit.

CW auto tune

A useful feature for tuning in to another station is CW auto tune. There is more than one method for zeroing in on a target frequency such as matching RX beat with sidetone pitch, or getting the pitch frequencies that can be heard when CW reverse is ON and OFF to be the same but it is very easy if you engage CW auto tune when you can hear the other station. It just takes the press of a button to make the VFO automatically zero in on the target. Note, however, that there are various limitations associated with this feature for example, the tuning range is 300Hz on either side of the pitch frequency, and it can be confused by interference so you should learn how to make good use of it.

As with other Kenwood HF transceivers, the TS-480 provides menu access to its many features. By selecting and adjusting these features, you can customize the TS-480 so that it fits perfectly into your way of operating a radio. Introduced here are tips on how to get the most out of the various items listed in the menus.

TS-480 menus

Group Operator interface # 00 Function Brightness of display backlighting (5 levels, including OFF) Key illumination ON/OFF Auto mode Use You can adjust brightness to suit the ambient lighting level. Turning backlighting off reduces power consumption by about 30mA. Turning illumination off reduces power consumption by about 30mA. Mode can be changed automatically depending on frequency. This is more convenient than setting VFO A to CW and VFO B to USB. By reducing the adjustment rate, you can make it easier to tune. You can change frequency with the main encoder in the same way that you can change channels. With this switched OFF, if you accidentally change frequency with the MULTI control, you can return to the original frequency. When ON, frequency step size is 9kHz. When OFF, step size is determined by the STEP value. The factory setting for US models is OFF; for other markets ON is the default. Switch ON to operate a frequency in memory without transferring it to a VFO. Useful for 50MHz scanning. You can choose how much to slow the scan. You can pause the scan for 5 seconds, a handy way to avoid missing a signal. You can switch between time-operated and carrier-operated scan resume to suit your purpose.

01 Tuning 02

Tuning control adjustment rate Frequency step for the main encoder in FM mode Frequency rounding for the MULTI control Frequency step size for BC band
Memory channels Scan functions
Temporarily change memory frequency Program slow scan Program slow scan setting Program scan hold Scan resume method

Volume adjustment

Beep output level Sidetone volume VGS-1 message playback volume VGS-1 announcement volume VGS-1 announcement speed Use CW IF filter for SSB reception DSP RX equalizer

Design concept

The standalone panel of the TS-480 Series draws on the design of the TS-2000. While inheriting the best aspects of the former models design, the new series represents an evolution in design with added emphasis on the 3D look, sharpness, and the power that is associated with 200W output. Also, the case of the main unit has been given a rounded form so as not to appear simply as a box; its design creates the impression of aesthetic unity. The TS-2000 was mainly designed for fixed station operations, so it has a silver-colored control panel. The TS-480 is of course expected to be used more frequently for mobile operations so a black color scheme was chosen. Black helps to minimize light reflection when used outside in sunny conditions. Of course the part of the transceiver that is most frequently touched is the main encoder dial. Each one is carefully machined and processed. After spin finishing, it is treated with titanium-colored alumite. The design of this main encoder dial is one of those features the TS-480 has inherited from the acclaimed TS-2000. Of course, we were not exclusively concerned with design aspects for example, adopting backlit rubber keys with a creamy-white base in order to improve visibility, and mounting the speaker in the rear of the standalone panel. We believe that our design enhances visibility and operating ease in both fixed and mobile operating environments.
New Option: Voice Guide & Storage Unit (VGS-1)
Developed at the same time as the TS-480, the VGS-1 can be installed as an option. Combining in one unit the functions of the voice synthesizer unit (VS-3) and the digital recording unit (DRU-3A) previously offered by Kenwood, the VGS-1 goes beyond both of these. Lets now take a close look at the functions that are available using this unit. NEW Havent you ever wondered if your callsign was being used correctly by other stations while on a DXpedition? If you use this constant recording function, you can record and playback the last 30 seconds of received audio or transmitted audio (sidetone when operating in CW mode), allowing you to check what was said afterwards. In addition, you can use this handy feature for other purposes, such as recording memos. It could not be easier to use. From the menus, you set constant recording to ON, and then all you have to do is operate the CH3/REC key. If you press the CH3/REC key for more than one second, the last 30 seconds of audio data is recorded in flash ROM. Then when you press the CH3/REC key the audio data recorded in flash ROM is played back. The audio data in held in flash ROM until it is overwritten by a fresh recording. Note that when recording to flash ROM, or when other VGS-1 functions are in use, constant recording is temporarily paused.

Constant recording function
Message recording/playback function
If beforehand you record standard CQ messages such as your callsign in the voice message memory, you can transmit them repeatedly at will, a feature that is extremely useful for DXpeditions and contests. The main features of this message/recording playback function are as follows: There are three recording channels; You can record up to 30 seconds in each channel (using all three channels this allows a maximum of 90 seconds for message playback); Used in conjunction with VOX, message playback can be used to switch between TX and RX; Repeat playback is possible; You can adjust the interval for repeat playback (0~60 sec.); and You can adjust recording level. With VOX on, repeat playback on, and the interval set appropriately, if you play back a prerecorded message repeatedly, the TS-480 will automatically switch between transmitting the message and waiting for a response. There is thus no need to sit in front of the mic and actually repeat your message over and over again. Even when you use a microphone with low sensitivity to record a message, the TS-480 is designed to set the appropriate recording level. Normally, this recording level is automatically linked to the mic gain setting, so if you wish to adjust recording level manually, you should adjust mic gain while recording is in standby. In message recording mode, the ALC meter scale serves as a recording level meter. As you speak into the microphone, adjust mic gain so that the recording level just crosses into the MAX zone occasionally. Even when you record in this zone, the AGC is designed to keep audio distortion to a minimum.

Voice Guide

Kenwoods Voice Guide function is not the same as the basic versions fitted in some transceivers merely to announce the frequency. Of course, we have included a frequency guide, but we were convinced that a Voice Guide is an obvious and essential feature for the menus and function settings that are so crucial for daily operation. The TS-480 has inherited intact those Voice Guide features that have proved so popular in other models. However, in addition we have enhanced the Voice Guide functions for the different configuration modes, and by making it possible to vary the speed (5 levels) we have made sure that this rig is even more user-friendly. We have programmed the TS-480 Voice Guide so that it only announces what has been changed in configuration mode, menus, etc. Thus items that are unchanged are not read out. Previously, even if there had only been a change in the options, the Voice Guide would read out each item: menu, menu number, option, and so forth. For the TS-480, however, we have changed the Voice Guide algorithm so that it only announces the option, enabling swift confirmation without you being forced to listen to unnecessary details being read out. Normally, Voice1 is assigned to a PF key on the control panel to read out operating frequency, channel number, the settings for each function, and so on. However, if you reassign a PF key (using menu #48) to #62, by switching to Voice2 you can hear the S-meter level being read out. Introduced here are a few of the benefits of the TS-480 Voice Guide. Some of these are automatic, while others are accessed by the PF keys. 1. Reset When the power is switched on, if you press the power switch together with either A/B or A=B, the Voice Guide will automatically respond with the query VFO/FULL RESET? 2. Configuration mode for TX output, etc. When the PWR switch is pressed, the Voice Guide will automatically respond with TX PWR plus the option. If you change the option using the MULTI/CH encoder, just the new option will be announced. With previous models if one pressed the PF key at this point, the frequency would be read out, but the TS-480 announces the setting plus the option. 3. Frequency lock Whenever the MENU button is pressed for more than 1 second, the Voice Guide will automatically respond with FREQUENCY LOCK ON or FREQUENCY LOCK OFF, whichever is appropriate. 4. Menu settings If the MENU button is pressed, the Voice Guide responds with MENU plus the menu number and the option. If you change the option using the MULTI/CH encoder, the menu number and option will be announced. If the and keys are pressed, just the option will be read out. For the options actually announced for the various menu items, please refer to the menu list provided in the instruction manual. 5. Split mode If you press a PF key during split operations, the Voice Guide will read out VFO + S + A + frequency. (Here S stands for split mode, while A means VFO A.)

The sound does not get through (remote PC).
Check that the computer can produce sound; update drivers as necessary. Connect a microphone to the computer and bring up the recording control window. Check that the input terminal you are using is active and that it is set to an appropriate level. Bring up the playback control window; make sure that it is not muted and that it is set to an appropriate level. Check that you can hear something from the speakers connected to your computer. Check that you are using a compatible operating system. Check that Voice is checked in the ARHP-10 setup window on the host computer. Check that KNS VOICE is illuminated in the ARCP-480 display. If it is not, recheck the host computer operating system for compatibility and also the network settings (including the ISP service for the host computer). If using a WAN, check that KNS will work locally over your LAN. If using a WAN, check your communications hardware and ISP settings. (If you are using a router, try removing it temporarily to see if that makes a difference.) Check that Voice is checked in the ARCP setup window. Check the modulation line. Check that the host PC audio cable connection method in the TX Control frame of the Setup window is the same. TX/RX audio breaks up, is distorted or faint. Bring up the playback and recording control windows on both host and remote computers and try adjusting the levels. If the RX audio seems faint, and if the Line-in terminal is being used for input on the host computer, try switching to the Mic-in terminal. If modulation seems faint during TX, and if the Line-out terminal is being used for output on the host computer, try switching to the Speaker-out terminal.

TS-480 In-Depth Manual

Published in April 2004 by Kenwood Corporation Communications Equipment Division Unauthorized reproduction is forbidden. Copyright 2004 KENWOOD CORPORATION



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