I perhaps have maybe a worst case scenario ... I live on a 60' by 90' lot in
Houston. Fortunately I have some very nice tall pine trees that support my
inverted L. It has one elevated radial in the shape of an L about 20' above
the ground and the antenna is fed through a current balun. One leg of my
K9AY loop is within 6' of the elevated radial and 40' from the antenna. Yes,
I get significant noise transferred from the transmit antenna to the K9AY
loop on receive. As per ON4UN's book, he suggests to ground the TX antenna
during receive and I set up a relay to do such and as a result, there is a
significant decrease in the received noise from the loop. The power line in
my area is underground, underneath and parallel for some distance with that
radial.
Just what I have managed to do here and have worked 155 countries with 600
W.
73, Mike WA5POK
-----Original Message-----
From: W2PM
Sent: Monday, June 18, 2012 5:50 AM
To: Bill and Liz
Cc: <topband@contesting.com>
Subject: Re: Topband: TX ANT TO RX ANT COUPLING
Do you have much noise in the first place to reradiate? Line noise also is
very spotty along a power line - along the same line of wires any nasty
arcing noise can be very strong or very weak at certain spots so the noise
level - if you have noise - may not be strong enough to reradiate with any
affect.
Sent from my iPad
On Jun 17, 2012, at 17:34, "Bill and Liz" <magoo@isp.ca> wrote:
> I have been following the thread with interest. I have a K9AY and a DO
> loop
> located within 60 to 75 ft of the TX vertical at our summer home.
> Interestingly, I find both these antennas very quiet with no sign of noise
> being coupled to them via the TX antenna. I work a lot of DX from this
> location on topband using these loops as well as a pair of Beverages, both
> of which also pass fairly close to my TX vertical and both of which are
> very
> quiet.
>
> So, why am I not hearing this noise many are experiencing? The TX
> vertical
> is a 60 ft toploaded affair and I do not de-tune it on receive. All I
> have
> done is to run all the feedlines for both RX antennas and the TX vertical
> underground in different conduits to a remote switching location. Someone
> please tell me why I am missing out on all the fun of having noise on my
> RX
> antennas.
>
> Bill, VE3CSK
>
>
>
> -----
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> _______________________________________________
> UR RST IS ... ... ..9 QSB QSB - hw? BK
_______________________________________________
UR RST IS ... ... ..9 QSB QSB - hw? BK
_______________________________________________
UR RST IS ... ... ..9 QSB QSB - hw? BK
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