Re: Low Noise Receiving antennas
- From: "pdrahn@xxxxxxxxxx" <co_farmer@xxxxxxxxx>
- Date: Thu, 11 Oct 2007 13:46:42 -0700
On Oct 11, 10:38 am, Tony Giacometti <TonyGiacome...@xxxxxxxxx> wrote:
I live in a neighborhood that as the years have gone on
has added a number of new homes. This has increased the
electrical "noise" for me where S1 or S2 on 80 meters 6-8 yrs ago
is now S7 to S9. At this point in time I don't have the room for a K9AY
setup. I can only "dream" of a beverage.
I have a Timewave ANC-4 which works very well on 40 meters as I can null out
ALL the "noise".
Not so on 80 meters as it only knocks it down 2 S Units.
At best I have an S-6 noise level.
This leads me to believe that I need a separate sensing antenna for 80
meters. Anyone have any ideas for this problem? Is this thinking correct?
I have been looking at low noise receiving loops and other low noise
antennas. Wellbrook athttp://www.wellbrook.uk.com/seems to have some
interresting possibilities, but some of the reviews I have read have made me
hesistant to purchase any of their products.
What I need is some serious input from anyone who has any experience and
knowledge in dealing with low band noise issues.
As I am now space limited due to all the new neighbors any solution would
need to take this into consideration.
TIA
Hi, Tony.
Several years ago I decided to put my ham radio station back on the
air. The tallest trees on my property here in Central Oregon are
junipers, about 35 feet tall. I managed to get the ends of a 40 meter
dipole up towards the top of the trees. It was fed with coax and a
balun. Petty noisy.
Later, I decided to try the old tried and true folded dipole using 300
ohm TV twinlead and an antenna tuner. This time I was able to get a 75
meter antenna up into the junipers. When I connected the antenna/tuner
the receiver, there was no noise. I actually went outside and checked
for something shorted. Then I checked the antenna for continuity with
an ohm meter. All was ok. This was mid-day and there were no stations
on 75 m. I tuned other bands and there was plenty of activity and very
little noise. Later I began to hear stations from the mid-west on 75
meters.
Bottom line, I think if you can find the room for a folded dipole or
other loop type antenna you will be surprised how much your noise
level goes down.
Best of luck.
Paul, KD7HB
.
- References:
- Low Noise Receiving antennas
- From: Tony Giacometti
- Low Noise Receiving antennas
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