[amsat-bb] Re: Cheap LEO antennas
Tue Aug 15 20:33:27 PDT 2006
>From an electrical point yes, but mechanical strength is poor especilly in
----- Original Message -----
From: "Michael Tondee" <email@example.com>
To: "Joe Kononchik" <firstname.lastname@example.org>
Sent: Tuesday, August 15, 2006 7:01 PM
Subject: [amsat-bb] Re: Cheap LEO antennas
> Joe Kononchik wrote:
>> Does anyone know if PVC (Schedule 40) can be used as a substitute for
>> Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author.
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> The white stuff can tend to get brittle out in the sun. Painting it will
> help with this somewhat. My 70cm antenna was modeled after the cheap
> yagi design and had a white PVC boom that had been painted gray. When
> lowering the mast to do some rotator maintenance the antenna brushed a
> nearby dogwood tree that the XYL refuses to let me cut down. The boom
> snapped right at one of the elements. This could have been brittleness
> or just the fact of where it struck.
> I can't comment on the tan (CPVC) pipe as I haven't used it. My
> replacement antenna will be using schedule 80 which is gray in color and
> much more rigid for the boom.
> Michael, W4HIJ
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