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jimbo wrote:
SNIPPED Well, Utah is a little too far away for your offer of help. But, why shouldn't I measure SWR at the transmitter? Doesn't a SWR of 1.0 at the transmitter indicate 50 + j0 ohms which is what the transmitter wants? Thanks, jimbo It IS what the transmitter wants! But you may be introducing un-necessary power losses in your coax from any true VSWR 1:1. It is possible to have a VSWR 25:1 at the antenna and still have close to 1:1 at the transmitter! REALLY !! Your transmitter is happy. But you are wasting power heating the coax, not radiating it at the antenna! This is caused by impedance transformation along the coax. VSWR ~ 1:1 at the antenna provides best power transfer from coax to antenna. BTW, I used to live in Kaysville and Layton [ZIP=85015] in the olden days [30+ years ago] |
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