Kenwood TS-570D, TS-570S Instruction Manual

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Contents

12345678910111213141516287 SPECIALIZED COMMUNICATINGSLOW SCAN TV/ FACSIMILESSTV is now increasing in popularity as a result of thecapability of computers. Using this technique, you cantransmit and receive still monochrome or full-colorimages. Instead of trying to describe your station, justshowing it is much faster. To do this, you require a scanconverter to translate your video images into audiosignals that can be fed into your transceiver. Or, tobegin more simply, you can use only your computer withreadily available software to perform this task. A TV setand a video camera that you may already own will alsobe useful tools.SSTV FREQUENCIESThe high resolution that is possible using facsimile (fax)can allow you to exchange more detailed graphics thanSSTV allows. Due to the longer transmission timesrequired for fax, it’s best to use this mode when bandconditions are stable with strong signals.Popular fax frequencies include the following:• 7245, 14245, 21345 (Intern. Net), 28945 kHzOperation on SSTV or fax mainly involves learning thefunctionality of your computer application or accessoryhardware that supports these modes. Consult thedocumentation that comes with your software oraccessory equipment.Note: When operating either SSTV or fax, use a fast AGC settingand switch OFF your Speech Processor for best results.IARU Region 1(Europe/Africa)Frequency (kHz)U.S.A./CanadaFrequency (kHz)3730~37407035~704514225~1423521335~2134528675~2868538457171142302134028680SATELLITE OPERATIONThough not as common as VHF/UHF satellite operation,HF satellite operation is possible depending on whichsatellites are currently in orbit around the Earth. WhenHF propagation is poor, satellite operation can providean incentive to get back on the air. Since thiscommunications mode is so reliable, you may discoveryou actually prefer satellite operation over the hunt-and-miss method of communicating via the ionosphere.An example of a Mode K satellite that uses uplink anddownlink HF frequencies is the Radio Sputnik 12(RS-12). Launched in the early 1990s, this satellite is ina low Earth orbit and provides brief windows ofopportunity for use as it passes quickly over yourlocation. The satellite accepts SSB or CW signals onthe 15 meter band and outputs them on 10 meters.This transceiver can also be used with Mode Asatellites, if you have an SSB/CW VHF transceiver.Mode A satellites use a VHF uplink and an HF downlink.If you’re interested in pursuing satellite operation,contact AMSAT (Radio Amateur Satellite Corporation)directly or via their internet Home page. This group ofsatellite operators, located all over the world, supportthe construction and operation of satellites. AMSAT canprovide you with the latest information regarding ModeK and Mode A satellites that are currently in orbit.