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Great, now to the issue.
\ How much power does the antenna pick up compared to the power enclosed within the 2.4 Khz frequency spread that is considered useful ? Or can we say how much energy is dumped to ground by a bandpass filter (plus insertion losses). I know it may be absolutely quiet outside the bandwidth of choice but I assume you get my drift with respect to efficiency of a simple dipole to a radiator of high Q. Regards Art "Dave Shrader" wrote in message news:he8%b.120870$jk2.515312@attbi_s53... Dan Richardson wrote: Let me try this one more time. You had posted earlier and I commented on this: "A receiving antenna must be resonant to enable full acceptance of available energy, and it must be matched to avoid re-radiation of more than 50% of the energy it is able to grab." I commented on the first portion of your statement (above). My only point is that it makes no difference if an antenna's is resonate or not in determining how much energy it grabs. That's it, nothing more. 73 Danny, K6MHE SNIP The effective aperture is the effective aperture is the effective aperture ... The antenna intercepts ALL the EM energy within it's effective aperture. You, the listener, may be interested in only 2.8 KHz of that energy. :-) |
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