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John Dyson wrote:
eceive. It is amazing for a 19kW transmitter, that the signal is easy to receive. However, the relatively lower frequency and high true gain of simple dipoles at the Ch9 frequency seems to help. (I know that you know this, but others might not realize: It is easy to be seduced by the 'high gain' of UHF antenna designs, but non-RF types need to understand that the gain is specified relative to an isotopic or dipole -- and at high frequencies, the gathering capability of such antennas is significantly reduced, because of the smaller area.) Ch8/Ch9 is (by far) the best source for HDTV in Indy, but the other stations are getting better. It's not the best for us in the far field, however. This is because its extremely easy for us to get an antenna with huge gain on the UHF channels, one that is about the same size as a Ch. 9 dipole. To get the same gain with Ch. 9 requires the same design antenna, hence a truly gigantic one. If it were 1 MW or even 316 kW, it would be easy. Doug McDonald |
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