Prototype Eqso/Echolink Interface Card

For the benefit of some people who are interested to make
the interface card, this is how mine was made..

Still has lots of room on the board to shrink it. I used
2 modem isolation transformers instead of the specified
600 ohm types from Radio Spares, but it finally turned out
to be working perfectly!
















The 2 blue stereo jack plugs are for connecting to the
PC Sound card, while the grey RS232 plug goes to the
PC Com Port 1.

The other side 3 RCA female connectors are for connecting to
the Transceiver PTT (yellow), the audio connector to the rig
microphone (white), and the the red connector is to connect
the audio from the rig.

I have added one more red LED on the left hand side of the board,
(not in the circuit diagram) which will indicate when power
from the PC Comm port is available to this card.
It will alternate ON & OFF with the other RED LED when in
the transmit mode!
















The copper track side ! (Resoldered by 9W2VA as my work was
very shoddy)
















Close up of the Veroboard. The 2 transformers are brand
new ones, taken out from 2 perfectly working Aztech 56k
Modems that I had to buy!
















Another view of the completed card ready to be installed in a box.

Hope your card will be easier to build & test, compared to mine.

Just a reminder..this interface card will only be required if you
will be using your Amateur rig as a "gateway" to access either
Eqso or Echolink software.

If you just want to communicate with other Hams around the
world using the Eqso or Echolink software, you will not need this
card.

9W2SSJ