Vic, Before you write off "truly balanced tuners" in favour of the T-network + balun <g>, it would be interesting to measure and compare the current in each wire of the feeder (while transmitting a carrier) when using the Matchbox and then the T-network + balun?
73, Geoff LX2AO On April 05, 2012 18:28 +0200, Vic K2VCO wrote: <snip> > But here is the surprising part: I expected that the Matchbox would > provide better > balance, which would reduce radiation and pickup from the feedline. To > test this, I > coupled a grid-dip oscillator to the feedline about 20 feet from the > tuner. > > To my great surprise, the signal from the oscillator was much weaker with > the T-network + > balun than with the Matchbox! > > Signals the same, 'noise' weaker. So much for the need for 'truly > balanced' tuners! ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
