[Elecraft] K3+KPA500+Steppir or K3+Expert KFA+ Steppir ?

[Jim Brown]

On Sat,11/22/2014 2:58 AM, Anton Koval, MW0EDX via Elecraft wrote:
> I understand that K3 can change, depending on the bands, drive power to equally drive the KPA500 so the same output power will be on all bands ?

Yes, the K3 can be set to remember drive power by band and mode. The 
KPA500 does not need a control line from the rig to change bands -- it 
detects the TX frequency with a dit or a tap on the mic. There is a 
control line, but I've never used it. The only control that is needed is 
PTT from the rig to the KPA500.

There is a serial port. The only thing I use it for is to load firmware 
updates.

73, Jim K9YC