My problem was straight B2B didn't work! However I found that a a 0.047uF cap in the KPC-3 Audio out line worked nicelly. Now its on to tidying things up with the connect scripts etc.
--- In BPQ32@yahoogroups.com, "John Wiseman" <john.wiseman@...> wrote:
> I've connected two TNC-PI's together with an audo crossover, and that worked
> fine. I've also connected UZ7HO soundmodem to the PI. I guess it depends on
> the sensitivity of the other TNC.
> 73, John G8BPQ
> From: BPQ32@yahoogroups.com [mailto:BPQ32@yahoogroups.com] On Behalf Of
> Sent: 07 May 2013 10:53
> To: BPQ32@yahoogroups.com
> Subject: [BPQ32] Loopback Testing - Not!
> Bill, I was forgetting that the TNC-Pi is getting a ton of (Ax25) control
> stuff down the RS232 pipe so that wouldn't work. To get a clean signal
> crossover I looked at connecting the TNCs back to back - this should work
> but for the signal levels which are very low. I'll pick up a couple of
> Lm386'S one the way home from work today and try that. If it 'aint one thing
> it's another!
> --- In BPQ32@yahoogroups.com <mailto:BPQ32%40yahoogroups.com> , "N9ACQ"
> <n9acq@> wrote:
> > That should work.
> > 73 Bill
> > N9ACQ