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%C2%A0 (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 [email protected] [email protected] _______________________________________________ Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb