[amsat-bb] Re: Circular polarization

[Raul Romero]

http://www.pa3guo.com/cushcraft_416tb.html



-----Mensaje original-----
De: amsat-bb-bounces at amsat.org [mailto:amsat-bb-bounces at amsat.org] En nombre
de i8cvs
Enviado el: domingo, 13 de mayo de 2012 20:44
Para: Bob- W7LRD; Ib Christoffersen
CC: Amsat - BBs; David 4X1DG
Asunto: [amsat-bb] Re: Circular polarization

----- Original Message -----
From: "David 4X1DG" <4x1dg at iarc.org>
To: <amsat-bb at amsat.org>
Sent: Sunday, May 13, 2012 6:30 PM
Subject: [amsat-bb] Circular polarization
>
> Is a UHF circular polarization antenna needed for the current 
> operational satellites?
> I am planning some work on my antenna system and wonder if the CP is 
> needed, or actually, deteriorate the signal by 3dB if the satellites 
> are using linear antennae??

----- Original Message -----
From: "Bob- W7LRD" <w7lrd at comcast.net>
To: "Ib Christoffersen" <oz1my at privat.dk>
Cc: <amsat-bb at amsat.org>; "David 4X1DG" <4x1dg at iarc.org>
Sent: Sunday, May 13, 2012 8:13 PM
Subject: [amsat-bb] Re: Circular polarization
>
<snip>

> I believe Domenico had a scheme for  switching any of the four.
> These uncertainty's make it fun.
>
> still rebuilding all antennas
>
> 73 Bob W7LRD
>
> Seattle
>

Hi Bob, W7LRD

My articles "SWITCHING FOUR POLARIZATION ON A 70 cm CROSSED YAGI" was
published in AMSAT-Journal March/April 2007 Part-1 and May/June
2007 Part-2 

I can send both articles in pdf files to anyone is interested on it.

73" de i8CVS Domenico
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