[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Discuss-gnuradio] NOAA antenna
|
From: |
John Coppens |
|
Subject: |
Re: [Discuss-gnuradio] NOAA antenna |
|
Date: |
Wed, 15 May 2013 13:29:09 -0300 |
On Wed, 15 May 2013 08:29:59 -0400
"Marcus D. Leech" <address@hidden> wrote:
> I think a lot of people use a QFH antenna, or a turnstile antenna for
> NOAA satellites at 137Mhz.
Note that you will almost certainly need an antenna amplifier too (unless
you make a huge antenna ;) Even a specialized receiver needs one to
compensate for the cable loss. And the ezcap receiver is not too
sensitive either...
As Marcus stated, many use QFH antennas (sometimes called QHA), though
many also use turnstiles (two, crossed dipoles) because it looks easier
to build.
If interested, there's some info you might find interesting on my site:
http://www.jcoppens.com/ant/qfh/index.en.php (QFH antenna construction)
http://www.jcoppens.com/sat/gaasfet/index.en.php (Example antenna amp)
John