Remembering that the DB9 jack on the back of the K2 is not RS232, if an
RS232 device like a USB/serial cable was ever plugged in directly, stuff
can be smoked, and on both ends of the serial cable. Most of the pins are
used to talk to the 100w amp and tuner mounted externally.

Voltmeter sounds good.

73, Guy K2AV

On Friday, October 14, 2016, Brad Brooks <brad.w...@gmail.com> wrote:

> While I continue to review the list archives, I am requesting feedback
> from the group with regard to possible failure modes of the KIO2 board.
> This rig is in loan to me, with the loaner stating that it was claimed
> working when he acquired it from a previous owner, but had not himself
> tested serial operation.
>
> K2/100 SN 879
>
> Performed configuration and testing outlined in the KIO2 manual. Tests
> tried with no positive results:
> - Known good FTDI serial-to-USB interface
> - known good "real" serial port.
> - serial breakout cable configured per manual.
>
> I have not yet put pins 2 and 3 on the scope to determine if the board has
> failed. I am interested if anyone else has wrestled, and won, KIO2 failures.
>
> Of course, I am open to configuration and user error on my part. I have
> been prone to foolishness in the past.
>
> 73 Brad WF7T
> Nashville y'all.
>
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