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#21
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wrote in message oups.com... The question is, why then are remote baluns promoted as the solution to this common problem? Well, there's more than one way to skin a cat, a remote balun wouldn't be bad if it fed the balanced feedline of a resonant antenna which is used at its resonant frequency. But if you want to operate the antenna everywhere then you don't want a balun feeding the open wire, weather it be at the antenna or on the antenna side of a shack side antenna tuner. Go to Cebiks index section, in particular the Transmission Lines, Impedance Coupling, and Construction section, - there's lots of reading there on antenna tuner matching issues including a great tutorial :^) http://www.cebik.com/radio.html And, is the coax twinlead and a balnaced tuner a better choice than a short lenght of very low loss coax, a good current balun, and a T match? Oh Yes. If you keep everthing balanced and then use a GOOD balanced antenna tuner things will work out fine. Avoid any balanced tuner design that has a matching network followed by a ferrite core balun on the *antenna feedline* end. These types of baluns are meant to be used close to their design inpedances, not when connected to a multiband antenna which is going to have wild variations in Z. 73, John |
#22
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Good info! I think Palstar has a tuner that places a 1:1 balun on the
input or transmitter side of a T match tuner. I think I will look into that one and use a short length of coax twinlead instead of the remote balun. Thanks for the help! Jim |
#23
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Good info! I think Palstar has a tuner that places a 1:1 balun on the
input or transmitter side of a T match tuner. I think I will look into that one and use a short length of coax twinlead instead of the remote balun. Thanks for the help! Jim |
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