[RTTY] FT1000 and optoisolators for PTT and FSK.

[Doug Faunt N6TQS +1-510-655-8604]

I've been cogitating on this for a bit.  I've now had it pointed out
that a 4N25-type optoisolator should pull the PTT and FSK lines down
closer to ground thn a 4N33-type.  The difference is a simple
transistor output rather then a Darlington pair.

If someone with the appropriate radio could try this all out, I'm sure
the result of the experiment would be interesting to us all.

They are plug-compatible, so if your optocoupler is in a socket, you
can just switch them in the socket.

73, doug