I wonder if anyone has had any experience with popping noises on switching. When I press the Band+, Band-, pre/att, ant, NB, mode,xfil I get a loud pop from the speaker. The first three give a double pop as the relays switch over. Pressing the other switches such as AGC A/B A+B etc has no effect because the are not activating relays. Would appreciate hearing if someone has a solution. 73 de VE3VI