I would appreciate hearing from anyone that knows if there are compatability concerns or issues using the MFJ QSK-5 Pin Diode T/R switch with a TenTEC Hercules II HF Amp. Thanks, Jack W0UCE -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.com Problems: owner-amps@contesting.com Search: http://www.contesting.com/km9p/search.htm