Re: [amsat-bb] Antenna Aiming Calibration Using the Sun Question - REPLY -

["kgshutt" <kgshutt@xxxxxxx>]

The G3RUH dish is polished spun aluminum.  When pointed at the sun, the
patch and d/c may be damaged by high temperature at the dish focus.  Use
caution or paint the dish before making sun noise measurements.

Ken- K5GUU

----- Original Message ----- 
From: "Gunther Meisse" <gmouse@neo.rr.com>
To: <amsat-bb@AMSAT.Org>
Sent: Thursday, May 29, 2003 12:21 PM
Subject: RE: [amsat-bb] Antenna Aiming Calibration Using the Sun Question -
REPLY -


> It sure does.
> A couple advantages:
> 1. It is a good way to look at the noise floor of you installation. It
> is desirable to see a significant increase in the noise floor when
> pointing to the sun. Varies with antenna gain among other things, but in
> general terms you want to see from 2 - 5 db increase  on the sun.
> 2. It is a great way to check the linearity of your tracking system.
> Using your auto tracking software, check in the early morning, mid
> morning, etc until near sunset. If tracking linearity is correct your
> see it every location.
> Gunther Meisse \W8GSM
>
>
>
> -----Original Message-----
> From: owner-AMSAT-BB@AMSAT.Org [mailto:owner-AMSAT-BB@AMSAT.Org] On
> Behalf Of Ted Huf W4ZE
> Sent: Thursday, May 29, 2003 7:04 AM
> To: amsat-bb@AMSAT.Org
> Subject: [amsat-bb] Antenna Aiming Calibration Using the Sun Question
>
>
> I have not gotten my system on the air yet, waiting for all the parts to
> arrive.  I was wondering the best way to check that you have the rotator
> calibrated.  Does the Sun emit enough noise on S-Band to know that you
> are pointed at it?  Is that an acceptable way of checking you aim?  Any
> other ideas?  S-Band setup will be Kuhne down converter and James
> Miller's 60cm dish and patch feed.
>
> Ted Huf
> W4ZE
> 724-873-5050
> Hickory, PA
> www.w4ze.com
> ted@w4ze.com
> ----
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> ----
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