[amsat-bb] S band satellite

[Jim White]

Thanks much Zach.  I've passed this on and the guys will see if they can 
see some of those today.

Very helpful.

Jim


On 10/30/2018 10:27 AM, Zach Leffke wrote:
> Hi Jim,
>
> I've used the Sirius Satellites to calibrate my pointing for S-Band, 
> but its a bit higher around 2340 MHz.  Sirius FM-5 was pretty active, 
> from some old notes I have strong tones (beacons?) documented at 
> 2341.481 MHz and 2341.495 MHz (#s are 'ish', may need to tune a bit).
>
> For the 2200-2300 band I've had some luck with the GOES satellites.  I 
> have a narrowband signal documented at 2209.086 MHz off GOES-15.
>
> For LEO, the active NOAA birds usually have S-Band telemetry as well.  
> NOAA-15, NOAA-18, and NOAA-19 should all work (NOAA-18/19 for sure, 15 
> might not always be on).  Sometimes the 'telemetry' is un-modulated so 
> just a nice clean tone that you can easily see following the Doppler 
> S-curve.
>
> You can also try pointing at the moon and see if you can pick up the 
> Lunar Reconnaisance Orbiter.  Thats probably more for 'funnsies' though.
>
>
> My usual procedure is to calibrate pointing against a GEO bird to peak 
> up and fine tune the pointing angles, then autotrack a LEO bird to 
> make sure everything is behaving.
>
>
> My notes are a couple years old, so things may have changed.  So below 
> are some links that you can use to maybe hunt something down.
>
> https://www.wmo-sat.info/oscar/satellitefrequencies
>
> https://uhf-satcom.com/satellite-reception/s-band
>
> http://wiki.oz9aec.net/index.php/Receiving_LRO_and_LCROSS  (for the 
> LRO attempt)
>
>
>
> Hope this helps, good hunting!
>
> 73s,
>
> Zach, KJ4QLP
>
>
> Research Associate
> Aerospace Systems Lab
> Ted & Karyn Hume Center for National Security & Technology
> Virginia Polytechnic Institute & State University
> Work Phone: 540-231-4174
> Cell Phone: 540-808-6305
>
> On 10/30/2018 12:06 PM, Jim White wrote:
>> I'm working with a university that has a new 4 meter S band dish they 
>> are trying to test out.  Can anyone recommend a satellite they know 
>> is transmitting in the 2200 to 2300Mhz band?  Geo or LEO as long as 
>> it's transmitting. Any modulation; we are using a spectrum analyzer 
>> to detect the signals.
>>
>> Thanks,
>>
>> Jim
>> jim.white at coloradosatellite.com
>> wd0e at amsat.org
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> _______________________________________________
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> Opinions expressed
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> of AMSAT-NA.
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