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Outdoor Antenna and lack of intermod

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October 3rd 03, 09:32 PM

Soliloquy

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How about radiation patterns. I'm not familiar with how antenna design
affects reception, but I have seen the transmission patterns of various
antennas. Is there an analogy to radiation patterns for reception (onmi-
directional antennas, still, as someone has suggested, perhaps a degree
of directionality) and could this be a factor?

Regards

Very strange. Obviously your scanner can't handle the strong local
signals picked up by your small "rubber duck" antenna. So obviously
the outdoor antenna is delivering LESS signal to the scanner. You may
be hearing more signals, because the scanner is no longer being
de-sensitized by strong signals.

I suspect you're getting a lot of loss in the feedline.

What type of coax are you using? What length of coax? And how old is
the coax?
If it's a long run of old weather beaten RG-58, that would explain it.

As the saying goes, "Scanners don't need pre-amps, they need
attenuators."

Art N2AH

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