[Elecraft] Cable for K3 to Expert 1.3K-FA

[Adrian]

Joe, just a note on SPE amplifier interfacing, is that not all rigs are
supported for cat frequency read interfacing or even band switching.

This is essential for the SPE atu (if fitted and active), to set its tune
setting before first keyup on band preventing a possible swr alarm and
switch to strandby.
Without CAT freq read the ATU had then used SPE internal RF sense freq
counter  during that keyup, but not fast enough to prevent that initial
alarm, 
so the amp still needs to be switched back to 'Operate' to continue, so CAT
freq tracking is very convenient for the ATU to function before first keyup
on band.

I found DXLab Commander an excellent program in between SPE and transceiver
to solve these situations

For the Elecraft KX3 SPE with freq/band follow ;

https://youtu.be/k87_lkO4mmY

I also use it with my FTDX101MP to follow the SUB freq as well (does not
work direct connected), The FT991 profile in SPE, and secondary Commander
CAT
works fine with either the MP and KX3 as primary Commander CAT connection.
The amp has two inputs and 2 cat connections as you know. 
The Commander program is easily switched between the two, or a start profile
setup for each transceiver.

The CAT connection from SPE to PC has DB9 2&3 reversed or a nullmodem patch
cable inserted in series with usual rig cat cable for rs-232 setups.

Adrian Fewster

VK4TUX


> Anybody got a spare cable to run from K3 to Expert 1.3K-FA they would 
> like to part with?
> 73,
> Joe