I am building the 5B4AGN Bandpass filter. Once it is together, what do I need to do to make my K3 auto band switch? Marty W5MF -- View this message in context: http://elecraft.365791.n2.nabble.com/Auto-Bandpass-Filter-tp5255506p7581136.html Sent from the Elecraft mailing list archive at Nabble.com.