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ATTN: Jim Weir - Plastic airplane antenna location and ground planefor an ELT.



 
 
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Old July 1st 03, 07:04 AM
Robert Bonomi
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Default ATTN: Jim Weir - Plastic airplane antenna location and ground planefor an ELT.

In article ,
Bart D. Hull wrote:
Jim et al.


[[.. el muncho strikes again ..]]

#5 Is it a "old wives tale" that you must not run coax next to each
other or you will create problems. How else am I going to run the Coax
from the back of the plane to the back of the radios?


One of the 'et al' responds:

Coax comes in various 'grades'. Having to do, among other things, with
how 'solid' the "shield" (outer) conductor is.

Using the "good stuff" -- 100% shielded -- you can put multiple runs
immediately adjacent without creating problems.

That aside, the interference from one line to another decreases as the
_square_ of the distance between them. two lines run immediately adjacent
might have 1/4" between the two center conductors. Put them 'merely' 6"
apart, and you've reduced things by a factor of about 600.


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