IC2E on packet
                   ==============

The IC2E can be used successfully on packet. This is how to achieve it.

TNC                             RIG
~~~                             ~~~
PTT-----------4.7K-------- TIP OF SMALL JACK

TX AUDIO------0.1MF------- TIP OF SMALL JACK

GROUND-------------------- BODY OF BOTH JACKS

RX AUDIO------------------ TIP OF LARGE JACK

This arrangement works with most TNC2 type clones, but it has not been tried
on the PK88.

Another possibility would be to use a 1 to 1 audio isolating transformer.
This is a suggestion on how to connect it up:

RX AUDIO---------TIP OF LARGE JACK
GROUND-----------BODY OF LARGE JACK
GROUND-----------TRANSFORMER PRIMARY
TX AUDIO---------TRANSFORMER PRIMARY
PTT--------------TRANSFORMER SECONDARY
                 TRANSFORMER SECONDARY---------TIP OF SMALL JACK

When the PTT line goes low, it makes the Tx connection for the IC2E.

Julian G6LOH @ GB7BIL

(Downloaded from GB7SYP)