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Re: Topband: Magnetic Loops

To: Bob K6UJ <k6uj@pacbell.net>
Subject: Re: Topband: Magnetic Loops
From: W2PM <w2pm@aol.com>
Date: Tue, 21 May 2013 12:32:33 -0400
List-post: <topband@contesting.com">mailto:topband@contesting.com>
Covered many times here over the years. Yes mag loops wil help loads with local 
crud noise if they are in a certain direction you can null to. If the noise is 
all surrounding as it would be in many high density residential areas like 
condos or industrial zones prob not. 

At best mag loop lowers the noise in two directions drastically - along with 
any signals in those two spots.  But in the non null areas there are absolutely 
no characteristics of the loop which are beneficial for DX other than getting 
whatever you may get.  Also know the loop has no vertical or horizontal 
directivity except for the two sharp nulls off the end of the loop so all 
atmospheric noise will be collected by th antenna and your DX will compete I 
that noise floor for notice.  For most local non DX work in very noisy spots 
these are great. 

If you want DX Id try a MFJ nuller and a k9ay or flag.  

73 W2PM

Sent from my iPhone

On May 21, 2013, at 11:40 AM, Bob K6UJ <k6uj@pacbell.net> wrote:

> Sometimes my local power line noise is about S8 or so on 160.  
> I am considering the purchase of one of these magnetic loop antennas for 
> receiving to see if it helps.
> Anyone have one of these ?  How well does it perform ?  One better than the 
> other ?
> 
> Pixel Technologies RF PRO-1B
> Wellbrooke Communications ALA 1530
> 
> Bob
> K6UJ
> All good topband ops know how to put up a beverage at night.
> _________________
> Topband Reflector
All good topband ops know how to put up a beverage at night.
_________________
Topband Reflector

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