Sounds good. Are you 100% sure the amp is following the radio? Most amps will in addition to CAT, also measure the TX signal, and change bands automatically if it is not correct.

To make sure, if you stay in the RX mode, and change bands back and forth, make sure the amp also follows those changes. If so, all is good. If not, then something is wrong.

Doug

Hmm,...
RX not changing the bands.
So something is still not ok.
It changes bands only on TX.
So still not working as it should.
My quest continues,.....

It seems that I am the only one using a ACOM 1200S with the SUNSDR2 DX ;-)

That's what I was afraid of ... You'll get it sooner or later for sure.

Have you tried the null modem adapter, it can go anywhere in the path such as right at the USB adapter output. It may be as simple as RX and TX are reversed.

Doug

Hello,
I have the Power Genius connected via RS232 and a null modem cable and the band switching works as it should.
I try with EESD2 and EESD3 using SDC or RigSync aplication transfer TCI to RS232...

Gordan,