Re: [amsat-bb] loss of polyacrylic glass on 2.4 GHz?

["John Wilcox" <ns1z@xxxxxxxxxxxx>]

Curious minds want to know: I am putting up a second dish (currently using
bbq by Andrew) and, since winter is only about a month away here in Maine,
what are the pros and cons of radomes for the helix feeds? Plastic Coke
bottle or what else might be good a protecting the feed from the WX?

----- Original Message -----
From: Achim Vollhardt <avollhar@physik.unizh.ch>
To: AMSAT Bulletin Board <amsat-bb@AMSAT.ORG>
Sent: Wednesday, July 24, 2002 3:03 PM
Subject: [amsat-bb] loss of polyacrylic glass on 2.4 GHz?


> Hi all,
> does anyone know the loss tangent of polyacrylic glass (or
> PMMA/Plexiglass) at 2.4 GHz? Is it suitable at 2.4 GHz as an antenna
> cover? I know it is not UV-resistant and I know that I could check with
> a microwave oven ('if gets warm, then throw away!'), but I just wanted
> to check if anyone knew..
>
> 73s Achim, DH2VA
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