[Elecraft] KPA500 Port problem

[Mark Goldberg]

When does it disconnect?

Does it disconnect if you don't transmit?

Does it disconnect if you transmit with the KPA500 in standby?

Does it disconnect if you transmit with the KPA500 operating?

Does it matter which band you are on?

If the answers to the above are different, you may have an RF on the
USB / RS232 problem that is present during high power transmissions.
Try bonding the computer to the amp with a wide braid and make sure
both are grounded well. If you are on an upper floor, maybe a
counterpoise might be needed.

The KPA500 remote utility works well, but needs two computers, one
near the KPA500 and one near the shack. The advantage is you don't
have to use long USB / RS232 cables. The two computers can be on WiFi
which usually is not bothered by HF.

73,

Mark
W7MLG

On Wed, Mar 3, 2021 at 9:46 AM Tim C <xyz191 at live.com> wrote:
>
> I live in a nursing home and am mobility impaired and must control my KPA500 with my computer.  I saved for over a year for the amp.  My KPA500 will stay connect to my computer for <2 min and the Utility locks up and the only way to get it to load again is to re-boot the computer.  The error messages I receive all say the port is in use which it is not.  I have uninstalled and re-install the FTID comport driver many times.  The baud rate of 38400 for both computer and amp.  I have downgraded and up graded the firmware.
>
> S/N 4293 ;  FW 01.52 Utility Version 1.13.17.16 ;  OS Window 10 64 bit
>
> 73, Tim WB8HRO
>
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