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Old March 19th 06, 01:24 PM posted to rec.radio.shortwave
David
 
Posts: n/a
Default Ferrite Bead Usage On Receive-Only Antenna

On Sun, 19 Mar 2006 07:52:07 -0500, "Robert11"
wrote:

Hello:

Will be putting up an outside antenna, with a coax run-in to the upstairs of
my
house where the receiver is.

Antenna is for receive-only.

This receive antenna's coax unfortunately, here and there, will be in close
proximity to the coax cable
Comcast runs to my PC modem. Really hard to avoid some close proximity of
the
two, in spots.

It has been suggested that I buy some of those R/S ferrite snap over "beads"
to minimize any pickup of the receive only antenna from the Comcast cable.

Questions:

a. Do I want to place them on both cables, or just Comcast's ? Why ?
How many and where ?

b. Should they effect my normal received signal (30 MHz on down to
broadcast bands) in any way ?

Thanks,
B.

The Cable Company usually uses very high-quality line for the data
drop. Unles you can hear noise sent back up the shield from the
"modem'' I wouldn't worry about it. You should use Quad Shielded RG-6
as well, if it's really bothering you.