The Tactical Radio Gear guy also sells the filters and diplexers of the kind used by multi-transmitter Field day sites. ?His QRP filter kit seem to be a lower-power implementation of the same. ?I have one of his QRP bandpass filters for 20M, looks well built; but I haven't tested it yet. ?The San Mateo club successfully uses triplexers and filters to simultaneously operate on up to 3 bands into one Yagi for their Field Day setup. ?73, Ron, N6YWU
