[Date Prev][Date Next][Thread Prev][Thread Next] - [Date Index][Thread Index][Author Index]

RE: Antenna Aiming Calibration Using the Sun Question - REPLY -



Or do it on a cloudy day.
Gunther 
W8GSM


-----Original Message-----
From: owner-AMSAT-BB@AMSAT.Org [mailto:owner-AMSAT-BB@AMSAT.Org]On
Behalf Of kgshutt
Sent: Friday, May 30, 2003 8:50 AM
To: Gunther Meisse; amsat-bb@AMSAT.Org
Subject: Re: [amsat-bb] Antenna Aiming Calibration Using the Sun
Question - REPLY -


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
> ----
> Sent via amsat-bb@amsat.org. Opinions expressed are those of the author.
> Not an AMSAT member? Join now to support the amateur satellite program!
> To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org
>
> ----
> Sent via amsat-bb@amsat.org. Opinions expressed are those of the author.
> Not an AMSAT member? Join now to support the amateur satellite program!
> To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org
----
Sent via amsat-bb@amsat.org. Opinions expressed are those of the author.
Not an AMSAT member? Join now to support the amateur satellite program!
To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org

----
Sent via amsat-bb@amsat.org. Opinions expressed are those of the author.
Not an AMSAT member? Join now to support the amateur satellite program!
To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org



AMSAT Top AMSAT Home