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A question about dummy load
ve2pid wrote:
Hi to all In a document from Roy Lewallen, we read this: When a balanced antenna is fed with coaxial cable (Fig.1), the outside of the shield appears as an extra, separate conductor connected to the right side of the antenna at the feed point. (page 157. What They Do And How They Do lt) My question is this: Can we say the same thing for a dummy load (i.e can we replace the words 'balanced antenna' with 'dummy load'?) so the dummy load would 'see' three conductors? We are trying to explain why some dummy load/Tx line systems radiate. Perhaps, tthe current outside the coax (common mode current) exits, while being very small, so the radiation could come from a leaking coax... ? Thanks de Pierre VE2PID To cut to the chase, and past the BS ... with the best affordable dummy load and solid coax, I can still chat a block down the street, at least (with decent power.) Now, how this is occurring? Is it "leakage" from the xmitter onto the ac lines? Coupling to metal objects in the shack? Etc.? Gawd only knows ... nothing is perfect ... when you find an answer to this mystery, please post back here; I am positive many more than me have wondered the same as you ... :-) Regards, JS |
#2
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A question about dummy load
That's the part of me that ran down my daddys leg.
N8WWM |
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