Kenwood TS-480 manual Auxiliary Features, Full compatibility with digital modes data modes

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Auxiliary Features

In addition to the basic TX/RX circuitry already described, the TS-480 is equipped with a number of auxiliary features of considerable practical benefit. What follows is an introduction to some of these.

●Full compatibility with digital modes (data modes)

PSK31 and RTTY operations can now be performed with ease using PC software. The TS-480 has been designed to make it easy to use such digital modes.

External audio input/output terminals, separate from the mic and speaker terminals, are provided. For each of these the level can be adjusted in ten steps.

You can select special AF DSP filters for use with digital modes. Specially provided for PSK31 use is the choice of either a 1000Hz or 1500Hz beat frequency.

With the optional CW filters installed, you can choose between them even during SSB reception, which we have had many requests for.

It is possible to switch the VOX function so that it will respond either to mic input or to an external audio signal. No special standby wiring is needed for making digital use of this VOX function. When transmitting voice with PTT, external input signals are muted. Conversely, when transmitting using an external input, the mic input is muted; thanks to this feature, there is no need to disconnect the mic during digital mode operations. (Note that if you put an external input on standby using the mic PTT, it will not be modulated; sometimes users have queried as a possible fault, but it is not.)

●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.

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Contents Page TS-480HX TS-480SAT Back to basics The appeal of HF lies in DX’ing Design ObjectivesDetermination to create a unique transceiver 200W challenge Standalone control panelFocus on basic performance Adding appeal to fixed station operations Overview of the TS-480 SeriesAchieving 200W output in a compact transceiver Development Objectives for the TS-480 SeriesTS-480 concept began with development of the TS-570? Focusing on HF Circuitry TX circuits 200W final sectionTX IMD output 200W SPS separate power sources TS-480HX only SPS schematic diagramAntenna tuner TS-480SAT Failsafe device some TS-480HX versions only100W final section 200W final section FM modulation block diagram FM circuitRX circuitry Front end RX 1st mixerRX dynamic range RX sensitivity Jumpers for joy Circuitry after the roofing filter Comparison of optional CW filters 500HzOption installation unit Auxiliary Features Features useful for 50MHz operationsFeatures useful for mobile operations Full compatibility with digital modes data modesNew 5MHz band Ideal for mobile operations DNL Features of the Built-in DSPDSP circuit Noise reduction Demonstrates how ignition noise is reduced by the DNLNR OFF Beat cancel BC OFFRX DSP filters Switching Width During CW operations RX equalizer & TX equalizer CW auto tuneTips TS-480 menusDSP Useful if you want to go on to tune FSK APO Functions that can be assigned to PF keys Assigned Use Split Making menus easier to use Menu switching Quick menuStructural Features Internal structure of the main unitCooling diagram CoolingUpper side Temperature rise around final transistors Page Design concept Message recording/playback function New Option Voice Guide & Storage Unit VGS-1Constant recording function Reset Configuration mode for TX output, etcMenu settings Split mode Voice GuideOther features VFO mode, direct frequency entryMemory channel Variable Voice Guide speedButton layout & basic operation Main functionsKNS added Changing memory and registered details CW keyingCompatibility with KNS Kenwood Network Command System Reading and writing filesSetting up KNS on the Arcp side Accidental continuous TXPage Using a broadband router Checking LAN settings New Option ARHP-10 Amateur Radio Host Program FreewareAdjust PC volume User setupPage Troubleshooting Network & Operations Problem SolutionCannot get KNS to work Sound Problem Solution Connect a microphone to the computer and bring up TS-480 In-Depth Manual
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