Would a copy of the service manual be of any help?
--- In [email protected], "Lynn W. Deffenbaugh (Mr)" <ldeff...@...>
wrote:
>
> The Alinco DR-135 brings the TNC-type connections (audio/PTT) out
> through a DE9 on the back of the unit when there's no internal TNC.
> When I install a T2-135 and turn the radio to data mode, the same DE9
> connector becomes one of the ports configurable for GPS or KISS or TEXT
> or whatever (mine normally connects to a Nuvi 350 for FMI).
>
> With a T2-135 installed and the radio NOT in data mode, does the DE9
> revert back to the original signals? In other words, can I connect an
> external TNC with a compatible cable for the original DE9 pinout or do I
> need to remove the T2-135 and put the DE9's internal cable back into the
> radio's circuit board disconnecting the T2-135?
>
> In sort, with the radio not in data mode, does the T2-135 pass the
> original signals through to the outside port?
>
> Lynn (D) - KJ4ERJ - Needing to experiment but loath to remove a
> perfectly functioning T2-135!
>
