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Programming TK-8102H com port error


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Have been programming a TK-880H with KPG-49D software using a KPG-46 USB cable and an x64 Windows PC.  Works fine.  Trying to program a TK-8102H with KPG-70D software using the same cable, com port, and PC but the software returns a com error.  Bought the 8102 as untested with power cables cut short when taken out of service. Tried changing PC com ports with same results.  Tried CHIRP, error says radio refuses com.  A local Kenwood tech says if the 880 works with that setup on my PC then the 8102 should too.  Powered up the 8102 with a 50watt dummy load and #1 program lamp lights up, volume controls work, but no other panel buttons work other than power on/off.  With a 50 watt dummy load a Surecom SW-32UV power meter shows it’s putting out about 30+ watts on ‘some frequency’ so I think it’s PROBABLY working. Tried downloading a com driver Kenwood recommends but after Windows tells me it’s installed, it doesn’t show up in Device Manager anywhere and retrying different com ports, still no joy.  Can’t find the Kenwood driver anywhere on the PC but probably a moot point as both radios should work with the setup I’ve been using.  Any ideas or is the 8102 ‘just what I paid for’ ——- a parts radio?

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The radio may not be happy with Windows 10 or 11 64-bit OS and the FTDI cable.  The radio of that vintage might be happier with a 32-bit Windows like XP or Vista and it may want to see a prolific driver and cable.  If you don't have those resources, let me know and I can help you out.

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