Topband: Pixel vs BOG

[donovanf at starpower.net]

Hi Ken, 


Small diameter "magnetic" loops such as the Pixel can be very 
effective in nulling a single vertically polarized local RFI source, 
fortunately most local RFI sources are vertically polarized. Their 
deep narrow beamwidth null is also very useful for determining the 
location of an RFI source. 


A small diameter loop provides no useful directivity for skywave 
propagated signals (such as the atmospheric noise in VO1HP's 
video) because the polarization of the incoming wave is constantly 
changing. 


73 
Frank 
W3LPL 



----- Original Message -----

From: "Kenneth Grimm" <grimm at sbc.edu> 
To: "Bruce" <k1fz at myfairpoint.net> 
Cc: "Topband" <topband at contesting.com> 
Sent: Monday, April 25, 2016 3:25:04 PM 
Subject: Re: Topband: Pixel vs BOG 

Wow! The BOG blows the Pixel loop away. The loop sounds like my 
vertical! I wonder if there might be a feedline problem? Surely the loop 
isn't meant to be that noisy. 

73, 

Ken - K4XL 

On Mon, Apr 25, 2016 at 9:55 AM, K1FZ-Bruce <k1fz at myfairpoint.net> wrote: 

> Mixed reviews. 
> 
> Pixel loop antenna vs 200 foot BOG antenna at VO1HP. 
> www.youtube.com/watch?v=GTXvcEwgUsU 
> 
> 73 
> 
> Bruce-k1fz 
> www.qsl.net/k1fz/bogantennanotes/index.html 
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