Sonny: >Does the K2/100 have an antenna relay jack to key an external amp? It offers solid state (HEXFET, DC only) switching. But it'll switch something like up to 200V Dc at a couple amps... fortunately darn few, if any, amps will test its limits. If you have an amp which supplies AC instead of DC, just preceed it with a full-wave bridge rectifier to convert the AC to DC. 73, Tom Hammond N0SS