RadioBanter - View Single Post

November 21st 04, 08:31 PM

On 21 Nov 2004 12:07:28 -0800, (Fred) wrote:
this is exactly what I'm after. The RF in the shack it is causing all
kinds of problems. My TS50 is turning itself off, sprinklers turning
on etc.

Hi Fred,

This is, really, a very common topic here. The praises heaped upon
expensive "BalUns" comes at the cost for simple ferrite plus rather
stiff prices added for advertising and the illusion of worth.

Simply take common garden variety ferrite cores and stack them up on a
12" length of RG-58. Very simple: one gozinta and one comesoutta.
This alone will quiet noisy receivers, remove RF potentials on the
case, cure rigs of instability; and make sprinklers and touch lamps
settle down.

Consult the archives for 1:1 BalUns, ferrite chokes, et. al. to
research the nuances of which ferrite you should use (or simply build
the conventional coiled coax choke).

73's
Richard Clark, KB7QHC