[Elecraft] KIO2 sends out to pc but doesn't take commands from pc

[Don Wilhelm]

James,

Have you checked the resistance across the tiny inductors on the KIO2 board?
Those inductors are easily damaged when installing, and an open inductor
would cause exactly the symptoms you report.
RXD and TXD are separate signals, so it is quite possible that TXD is
working, but RXD is not - resulting on 'one-way' communications.

73,
Don W3FPR


> -----Original Message-----
>
> I have been working with the KIO2 for a while to try to get it to work.
> It's never really worked since I put it in.
>
> Today I verified with another PC that the K2 does indeed send data
> through the KIO2 but it does not receive. I ran the test as described
> on page 14 of the KIO2 manual. Steps 1,2,3,4 works fine I get the
> FA0xxxxxxxx; to come up in hyperterminal when I hit the DISPLAY button
> as instructed. When I try step 5, which is to type SW01; then nothing
> happens. The software I tried cannot connect to the K2 either.
>
> The settings on my serial port (COM1) in Device manager (windows 2003
> production) are as follows:
> Bits Per Second: 4800
> Data Bits: 8
> Parity: None
> Stop Bits: 2
> Flow Control: None
>
> I am still baffled by what would cause one way communication, but not
> two way communication between the K2 and the PC.
>
> 73,
>
> James KB2FCV
>