I have RF floating all over my shack. Monitor it on a home built Field
Strength Meter with 200 micro amp meter and a 2 inch ant on it. With meter
located at op position I have full scale RF from my roof mounted dipole with
500 PEP out. I have NO RF in any of my equipment or cables. All equipment
goes direct to a common ground bus which then goes to two 8 foot ground rods
in XYL's flower bed (which gets watered daily) then to 300 feet of Cattle
Fence, with all this tied to electrical power ground. From ground bus I use
#00 stranded electrical wire to rods & fence with #6 to electrical power
ground. Also all my antenna coax cables have current chokes (10 turns coax
of 10 inch in diameter) before entering the shack. All RF in my shack is
coming from my antenna radiation. With the 500 watts going into a dummy load
I can find no RF on any equipment or in the shack.
--
Jack, W7EJJ
----- Original Message -----
From: "Carl Hyde" <cshyde@yahoo.com>
To: "Ten Tec" <tentec@contesting.com>
Sent: Friday, April 20, 2001 5:52 AM
Subject: Re: [TenTec] I'm getting reports of RF in my Pegasus ssb audio.
>
> One of the best tools I have used to chase down RFI problems (besides
burning
> your lip on a microphone putting out a hundred watts) is the el-cheapo
Radio
> Shack SWR/field strength meter. In the field strength mode you can sniff
around
> cables and radios for RF presence. There is no substitute for a good RF
ground.
> I have one of the Ten Tec RF counterpoise kits that I used in a second
floor
> apartment a few years ago and it made a tremendous difference in keeping
the
> RFI at bay. The arrangement of the Pegasus with the computer, monitor and
radio
> is critical. You may have to try different locations and some snap-on
torroids
> on the connecting cables. Last night I looked back at the reflector
archives
> since the debut of the pegasus, I found that most of these problems are
monitor
> and switching power supply noise being coupled into the Pegasus. Some
monitors
> seem to put out more noise than others and some owners have had to replace
> noisy monitors. Other owners re-arranged their computer and monitors in
> relation to the radio to cure the problem.
>
>
> =====
> Carl H.
> Remember, the opposite of PROGRESS is CONGRESS
>
> __________________________________________________
> Do You Yahoo!?
> Yahoo! Auctions - buy the things you want at great prices
> http://auctions.yahoo.com/
>
> --
> FAQ on WWW: http://www.contesting.com/FAQ/tentec
> Submissions: tentec@contesting.com
> Administrative requests: tentec-REQUEST@contesting.com
> Problems: owner-tentec@contesting.com
>
>
--
FAQ on WWW: http://www.contesting.com/FAQ/tentec
Submissions: tentec@contesting.com
Administrative requests: tentec-REQUEST@contesting.com
Problems: owner-tentec@contesting.com
|