sp5it pisze:

My friends , the Icom 706 Mark II has a Low Pass filter that cuts off
above 56Mhz, which means it looks like a short circuit. If you try to tx
there all 100watts is reflected back to the PA.
https://groups.google.com/forum/#!topic/uk.radio.amateur/M3jxktZjdkA
Trzeba przerobić LPF.
Michał