[TenTec] Hardware FSK

[Mark Erbaugh]

I have a BuxComm Rascal interface with the FSK option. Basically, all
that option does to the base Rascal is add another opto isolator an
connect it to the TxD line from the serial port. The opto isolator is
just soldered piggy back on top of the PTT opto with the necessary pins
bent straight out and wires soldered to them directly. While the PTT
opto is driven through a resistor from the RTS or DTR line and has a LED
to indicate when it is on, the FSK opto is driven directly from the TXD
line.


73,
Mark

On Fri, 2006-12-29 at 19:05 -0600, Kim Elmore wrote:
> This isn't exactly TenTec oriented, but I'll not let that stop me :) 
> Besides, I'llkeep it short:
> 
> Of those of you who do hardware FSK, what do you use to do it?
> 
> Kim
> 
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