No there is no added switches or extra jacks... From what I can tell the little Board is a roofing filter.. And I had a word with prevous owner again he thinks the bigger board was a added extra speech procosser, You cant have the mic gain past 2 or it will over modulate :blink:
Hmmm! That's interesting. Should be a pretty hot little rig then, with all the extra stock filters and added roofing filter. I have a Ten Tec compressor board kit laying around here somewhere (they don't sell them anymore), but the one in yours looks more home brew?
Have fun with it!
73,
RT307