[Elecraft] K3 Keyer to use with Tascam interface

[Joe Subich, W4TV]

Build the circuit here:
    https://sites.google.com/site/kh6tyinterface/

You need connect only the right channel (ring of the typical TRS jack).
The second transformer (receive audio), assorted components, and the
transmit audio pot are not needed.   Do use the transformer on the TX
audio as it provides a voltage step-up to make the VOX circuit more
sensitive.

I believe the "pseudo FSK" decoder circuit in the fldigi documentation
will also work for PTT.

73,

   ... Joe, W4TV


On 2015-01-19 11:51 PM, Chris Meagher wrote:
> Hi
> I have set up a Tascam US-125M with K3/10, for work with fl-digi.
> Rather than use VOX, I would like to make a simple as possible circuit to
> take the Tascam right channel output (carrying fl-digi keyer tone) to key
> the K3 via the rear panel RCA,. Preferably electronic switching. Could use
> a 9V battery?
> Does anyone have a ready made circuit? Thanks.
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