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Need help on How to test transmission line
Hi fellow amateurs,
I am using 746Pro for 6M with direct coax to my 5 el antenna. I used to get 1:1 SWR but recently, the SWR runs a little over 1:2 and my output drops to 30W.When stations in FN20 were working EU, I could hear nothing. My signal can still be received because I was able to make contacts despite 1:2 SWR as far as FM5AA. But I know something is wrong with the line or the antenna. I checked all the connections and they seemed to be ok. Can someone help by directing me to a source where I can read about troubleshooting transmission line? Or can someone who has experience in this give me step by step instruction on how to diagnose the problem, e.g., is it the PL 259 at the rig side, or the antenna side, or somewhere along the line, or is it the antenna altogether. I have an ohm meter and a small swr/pwr meter box. Thanks in advance. 73, steve |
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