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post #6 of Old 07-09-2007
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Originally Posted by knotaloud
I remember reading somewhere that if your GPS antenna cable runs too close to the VHS coax, that could do it, or if your GPS antenna cable has a big loop or coil, it can act like a radio antenna and amplify radio interference.
Well... close. The GPS might emit some amount of "random" RF noise, across the spectrum, from its receiving antenna system. All radios, even pre-digital ones, do. (Tho the pre-digial ones weren't random. You could tell what station they were tuned to by what they were radiating.) Shouldn't be much, though. All a loop in the GPS' antenna line will do is perhaps radiate more noise in in the area of the loop.

Originally Posted by knotaloud
And I would ground the coax
It'll already be grounded via the chassis of the radio--and possibly at the antenna end, as well. (Depends on the antenna type and mounting method.)

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