[amsat-bb] Re: 2.4 Gig

[Edward Cole]

As a reference point,  I was able to see half an 
S-unit (approx.) of sun noise with my 85cm offset 
feed dish with helix feed and MKU-232A2 
LNA.  Pointing at trees (forest) on the horizon 
also produced about the same noise increase as 
compared to cold-sky.  When I get my AO-40 stuff 
back up I will make a more precise measurement 
using  my SDR-IQ as detector (0.1 dB resolution 
in gain).  Also the SDR-IQ can switch off AGC.

73, Ed - KL7UW

At 03:24 PM 6/1/2009, i8cvs wrote:
>Hi Nels, W0TUP
>
>You don't mention the size of your dish and the overall System Temperature
>of your receiving system for 2.4 GHz but if it was good for AO40 you should
>be actually able to receive a small level of Sun-Noise.
>
>As an example:
>
>Using my 1.2 meters dish with an overall  System Temperature of the system
>of about 72 kelvin I was in condition to day to get about 3.4 dB of
>Sun-Noise as the included diagram showes.
>
>The signal radiated by AO-51 is too strong to evaluate if your 2.4 GHz
>receiving system is in good shape or not.
>
>73" de
>
>i8CVS Domenico
>
>----- Original Message -----
>From: "Arlon Nelson" <anelson at min.midco.net>
>To: "Amsat-BB" <amsat-bb at amsat.org>
>Sent: Tuesday, April 28, 2009 3:01 PM
>Subject: [amsat-bb] 2.4 Gig
>
>
>Are there any satellites on 2.4 gig so I can check out my old AO-40 dish.
>73,
>Nels, WØTUP
>Minot, North Dakota
>nels at w0tup.com
>http://www.w0tup.com
>
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