In article , "Robert11"
wrote:

Hello:

Will probably try a coax feed, and a Balun, to the random length wire
running around the four sides of my attic to reduce noise, hopefully.
Do listening only, up to 30 MHz.

a. For a receiving 9:1 Balun (coax to a random length wire in attic),
does the Balun have to be grounded ?

Or, is it grounded "adequately" via the coax - to the radio chassis - to
an earth ground from the radio chassis ?

[If the Balun Does require a ground (also), wouldn't this possibly
cause a ground loop in that it would be grounded at both ends ?]

b. Anyone have any experience with, or opinions on:

-the 9:1 Balun by RF Systems in the Netherlands
(termed a magnetic balun, how it's different from a normal toroidal
transformer coupling, I have no idea ?)

-or the unit by Win Radio (WiNRADiO WR-LWA-0130 Long Wire Antenna
Adapter
$39.95 ADP35)

c. Any significant difference in the type of coax used for listening
only, with a run of about 50 feet.
Used LMR 400 for my attic scanner, but would like to avoid the
hassle
of stringing the large diameter coax again, and possibly
just use a small diameter coax. Would one likely notice any
difference
up to 30 MHz ?

Thanks, Bob

Read the four articles at:

http://anarc.org/naswa/badx/antennas/

Your questions match their content remarkably well.

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| John Doty "You can't confuse me, that's my job."
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