> > So, depending on what your radio main antenna port looks like when switched to > receive antennas, you might be able to add 1/4 wave of coax and have exactly > the > same effect with no additional switching at all. > > Otherwise, you run a risk of creating relay sequencing issues. You have to be > careful, and you must use a relay system and a control system that does not > hot > switch a relay. > Years ago at old QTH I did that. Feedline from Amp to Shunt Fed tower was set at 1/2 wave electrical length. Then between the Amp and Transmitter I placed a Relay box that Grounded the Transmit Antenna during Receive. Only needed to deal with relay for 100 watts that way. Relay needs to be fast closing and slow in opening to as Tom says prevent hot switching. John k9uwa John Goller, K9UWA & Jean Goller, N9PXF Antique Radio Restorations k9...@arrl.net Visit our Web Site at: http://www.JohnJeanAntiqueRadio.com 4836 Ranch Road Leo, IN 46765 USA 1-260-637-6426
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