Grounding is one of the most important things you can attend to,
however, you can have RF on the shield of your coax even with a good
RF ground. This RF is more dependent on the design and match of the
antenna and it can induce signals into other electronics.
Jim
WA0LYK
--- In digitalradio@yahoo
In many radios the SWR foldback circuitry doesn't care where the RF it
senses comes from. I know some of the older Icoms are like this.
Consequently, if you get RF into the radio from the shield of your
coax, the foldback circuitry will amplify it and raise the ALC.
Jim
WA0LYK
--- In digitalrad
I can sum it up in one word.
GROUNDING !
It's a must to have very best RF grounding you can.
Need a Digital mode QSO? Connect to Telnet://cluster.dynalias.org
Other areas of interest:
The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/
DigiPol: http://groups.yahoo.com/gr
Interesting. Anyone care to explain why RF would cause this ALC issue?
On 2/13/06, Mel <[EMAIL PROTECTED]> wrote:
Hello Tim, TG6124,I solved the problem and I think it may have been RF. The day beforethe antenna had been playing up and I moved the coax cables and in
doing so placed the cables
I don't know what kind of dipole you are using, but you probably don't
have much RF standing on the outer shield of the feedline that can be
picked up by your computer. You probably have RF on the shield of the
coax feeding the vertical. This can be picked up by anything in your
shack. Do you al
Mel, I have had a similiar problem when transmitting SSB with high power (500 watts). My transmissions were coming through our computer speakers in another part of the house. I ended up running the computer speaker wires through ferrite cores ... problem gone. I obtained the cores from Pa
I have a similar problem on 20M and it is RF
getting into the speakers. I put a couple of toroids on the speaker lines
and it became quiet.
I could actually make noise throough the computer
speakers, with the computer off, but the speakers powered up,
go figure
John
VE5MU
-
Hello,
I use a Cushcraft R5 for my radio activity from 20 metres upwards and
a dipole for the lower bands. I have observed that when I use the R5
for PSK on 17 metres that the computer emits loudly the sound of a
PSK transmission, but when I use the dipole the computer is quiet.
Is this noise R
Hello Tim, TG6124,
I solved the problem and I think it may have been RF. The day before
the antenna had been playing up and I moved the coax cables and in
doing so placed the cables from the ACC1 to the ISO box in a place
where they seem to have caused this trouble. I separated them and the
p
Bottom Line... "the rest of the world has already figured it out and is
patiently waiting for the USA to catch up"
__Howard S.
White Ph.D. P. Eng., VE3GFW/K6 ex-AE6SM KY6LAWebsite: www.ky6la.com "No Good Deed Goes
Unpunished""Ham Ant
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