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Re: G4COM Noise Meter and system tweaking...



If you want to radiate the noise into your dish you'll have to amplify it by
at least 30 dB and connect it to a small RHCP antenna. Down East Microwave
sells PCBs and MMICs to make suitable amplifiers. W1GHZ has information on
setting up an antenna range on his Web site (http://www.qsl.net/n1bwt/).

Since I don't have the space for an antenna range, I just use the Sun as a
noise source and point the antenna straight up to turn off the noise. It
takes time to make and record a series of measurements under different
conditions but it does work.

73,

John
KD6OZH

----- Original Message -----
From: "Russ Renaud" <ae517@freenet.carleton.ca>
To: <amsat-bb@AMSAT.Org>
Sent: Tuesday, 03 July 2001 16:12 UTC
Subject: [amsat-bb] G4COM Noise Meter and system tweaking...


> I'm just putting the finishing touches on my G4COM noise meter, and poking
> around on the WWW I found some EME articles at the PA3CSG web page
>
> http://www.qsl.net/pa3csg/Boek/BoekH2/content2.html
>
> and more specific to my noise meter:
>
> http://www.qsl.net/pa3csg/Boek/BoekH2/art2-32.html
>
> N6IZW kindly provided a microwave diode as a 2.4 GHz noise source to
> use in conjuction with my meter.
>
> How can I couple enough noise into my helix-fed dish to tweak my
> system?
>
> Thanks
> --
> 73 de va3rr/aa8lu


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