Because these noise cancellers did not work very well for me and required
constant fiddling I got a Pixel magnetic loop.
These units have the ability to null out plasma noise as well as being
non-responsive to power line type noise.
It is a receive only antenna about 40" in diameter mounted on a 10' conduit
in the yard.
It is portable as well....I can disconnect the coax and walk away in 26
It has a broad band amp at the loop and I use a 18db DXE amp under the desk
to get the received signal equal to the main antenna.
The directivity increases as the frequency goes up.
It is expensive....$500 but if bought direct from Pixel it has a 30 day no
questions asked money back guarantee if you are dissatisfied in any way.
It is the difference between going permanently off the air or continuing to
I cannot stress how well this thing works.
It took my 20/9 noise to S1.
From: RFI [mailto:email@example.com] On Behalf Of Jerome Schatten
Sent: Saturday, March 22, 2014 11:06 AM
Subject: Re: [RFI] Noise cancellers....
What you say is of course true -- you can only kill one at a time. That
said, you can often times choose your target, by adjusting the phasing.
Getting rid of the most offensive noise source will usually allow you to be
reasonably operational again -- my goal.
If you use two antennas that are both capable of good tx performance, then
you have an additional weapon: switching the two antennas around.
You can do this by installing a dpdt switch in the unit and doing a little
The main PITA with cancellers is the time you spend getting the adjustments
Out Dammed Noise!
jerome - va7vv
On 14-03-21 11:20 PM, Jim Brown wrote:
> Note that ANY noise canceller can only work on noise arriving from one
> direction at a time. If you have multiple sources, you can kill only
> one of them at a time.
> 73, Jim K9YC
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