Born2bwire
Diamond Member
- Oct 28, 2005
- 9,840
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Originally posted by: Perknose
Originally posted by: Born2bwire
Originally posted by: KK
Are you the same person that said that the more people recieving the OTA transmission the weaker the signal gets?
Technically that is true, but I doubt on a level that would affect the performance of any of the customers.
Care to explain??? :shocked:
(Maybe I'll learn something new today.)
The electromagnetic wave has to excite the currents on the receiving antenna. There's no way around this and due to the finite conductance of materials, energy must be used to do this. In addition to the energy loss due to the resistance of the antenna itself, it is desirable to extract a signal to amplify and use. So any antenna system is hooked up to a load of some sort (be it an amplifier, or just the receiving device itself, like an AM radio) that will consume energy as well, which is sourced by the incoming signal. It isn't unheard of to have the entire receiving system to be powered by the incident signal alone, like a crystal radio for example. So just exciting the signal on the receiving antenna and system draws power from the incident wave. Considering how little power needs to be sapped from the incident signal, I would expect that the distortion of the wave (via mutual coupling and/or retransmission from the receiving antenna) would have a more dramatic effect on a nearby antenna's signal strength than the actual reduction in power density.
