[Lowfer] KID Chips

[David Willmore]

> That would be fine. I would run a buffer stage between the keyer IC and the
> Epson anyhow. I use a transistor to convert the RS-232 from my PC to the
> levels that the Epson keys with now.

Definately a recomenned practice. :)

> Programming with the serial port would work fine.

Cool.

> I suspect the others would like DFCW as well as the QRSS and plain CW if the
> chip can do all three. My scheme here is a QRSS-30 and a 15wpm CW message
> keying the exciter. So the locals have CW to hear and the DX has QRSS to
> see.

That's the kind of stuff I'm talking about. :)  How do people key DFCW?  One
like for each freq?  One key line and one high/low line?  I guess I could just 
have three outputs: Key, high and low.  That would meet all schemes, wouldn't
it?

So, for CW and QRS:

Key: --+-+-+-+++-+++-+++-+-+-+--
low: --+-+-+-+++-+++-+++-+-+-+--
high:---------------------------

For dif-CW:
Key: --++-++-++-++-++-++-++-++-++--
low: --++-++-++----------++-++-++--
high:-----------++-++-++-----------

Time axis is not to scale, of course. :)

Would that drive everyones TX systems?

Cheers,
David N0YMV