[Elecraft] Noise Problems...still

[Lawrence Makoski]

S2 - S4 with only about S5 before a thunderstorm?  I think that's pretty
good, Terry.  Last night, just monitoring 40 Meters while puttering
around in the shack, I had an S2 - S3 level.  It would get worse from
time to time.  I think somebody in the neighborhood had an air
conditioner compressor giving off some RF hash.

73 de Larry W2LJ

----- Original Message -----
From: <Wingkeel at aol.com>
To: "W2LJ" <Makos327 at worldnet.att.net>
Cc: "Elecraft Discussion List" <elecraft at mailman.qth.net>
Sent: Sunday, August 01, 2004 12:17 PM
Subject: [Elecraft] Noise Problems...still


> Hi everyone,
>
>      Well, the noise level has been lowered a lot, but I'm still
getting
> higher noise levels than I think I should.  On 40-meters, I am getting
an average
> of S2-4 peaking at S5 around the time thunderstorms begin to form.
>
> I've put up a vertical which helped.  Putting down 12 tuned radials, 2
for
> each band, helped even more.  Moving the power supply a few feet away
may have
> also made a difference but I can't tell by ear.
>
> I am using the standard red/black zip type supply line from the power
supply
> to the radio.  I am wondering if going to coax to supply power to the
radio
> may not drop the noise level even more?  I would think that the R/C
tank in the
> radios power circuit would take any ripple or noise out but maybe I'm
wrong.
>
> I also have a ground that is a 20' long piece of 10GA bare copper wire
> running to a single lightning rod from a second story window.  I'm now
wondering if
> this wire isn't acting like part of the antenna or maybe injecting my
> transmitted signal back into the receiver via the power supply.  Since
I'm only
> running 5-10 watts output, should I use coax for the ground as well
and decouple it
> with ferrite beads just in case?
>
> For a beginner, this is all pretty confusing!  I read so much, trying
to come
> up to speed quickly. The problem is that I begin confusing which
solution
> goes to what problem I remember reading about last month in some
periodical
> can't remember.
>
>                          Sometimes a little brain damage helps
>
>                                      73 de Terry - KC0QZX
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