With the homebrew circuit (opto-isolator X 3, one each for PTT, Data/FSK
and CW) I'm using, I chose to take the CW keying directly to the key
port of the K3 (in parallel with the hand key, plus there are paddles).
That allows me to leave Config: PTT Off-Off.
This has worked really well, except the OS wake up still keys the
transmitter during the discovery phase of boot up. That apparently
can't be avoided (so I put the TX in test mode, if I'm in the shack). I
use real serial ports as USB has more problems in QRO RF.
This works in HRD and MMTTY. For FT8, I have to switch from FSK D (or
AFSK A) to Data A (or just use AFSK for RTTY and leave it alone).
That cat still gets skinned and 'normal' is overrated. ;-)
73,
Rick nhc
On 3/18/2018 8:21 AM, Joe Subich, W4TV wrote:
Note: the normal configuration for CW and PTT when using the RS-232
*or* USB virtual port with most software is PTT on RTS and CW on DTR.
For the K3/K3S that is CONFIG:PTT-KEY = rtS-dtR
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