[amsat-bb] Possible KMS-4 Radio Reception w/ video
hill.charles.robert at gmail.com
Fri Feb 12 19:28:03 UTC 2016
Excellent approach. If it is transmitting I could see it being detected
just this way. Including what you called 'peer review'... Essentially
finding a signal with a Doppler profile that cannot be attributed.
Do you have more plans to monitor passes? Can you monitor on 26mhz? On
previous launches they mentioned that freq as well.
On Feb 12, 2016 9:24 AM, "Scott" <scott23192 at gmail.com> wrote:
> THANK YOU!!!
> Thank God for peer review. Sorry for the false alarm, but I guess if I had
> not put it out there, I would have always wondered if I had found something
> On Fri, Feb 12, 2016 at 5:51 AM, Nico Janssen <hamsat at xs4all.nl> wrote:
> > Scott,
> > That signal was the A-DCS service downlink on 465.9875 MHz from Metop-A
> > (object 29499, 2006-044A).
> > See also: http://www.wmo-sat.info/oscar/satellites/view/306
> > 73,
> > Nico PA0DLO
> > On 12-02-16 03:32, Scott wrote:
> >> At approximately 0111 UTC 12-Feb-2016, I was monitoring a wide spectrum
> >> the area of 460 Mhz in hopes of seeing a signal with doppler movement
> >> might correspond to the TLE track of the KMS-4 satellite launched by
> >> Korea.
> >> A very strong signal appeared up near 465.985 and tracked as you would
> >> expect. Since the signal strength and doppler movement correlated
> >> to the track on Orbitron, I suppose there is a decent chance that I was
> >> actually receiving KMS-4.
> >> Naturally I forgot to record the IF until well through the pass, but I
> >> don't really expect to be able to decode the signal anyway. I'm not
> >> sure if there was anything but a carrier, to be honest.
> >> On the outside chance that I did see anything on this pass, I was
> >> recording
> >> the screen and have uploaded the video to YouTube. Orbitron is very
> >> on the right side as I wanted to have as much area as possible to watch
> >> for
> >> a signal in HDSDR.
> >> The max elevation on the pass was 55 degrees. Antenna was a fixed,
> >> omni-directional QFH built for 432 Mhz. The radio was the SDRPlay RSP.
> >> If anyone would like to see what the signal looked & sounded like, the
> >> video is at: https://youtu.be/9JiEyUM-8U4 (please jump to the 4:40
> >> where the signal first appears)
> >> Oh, and sorry about the manual tuning... not knowing the frequency
> >> beforehand, I did not have the software setup to track the doppler
> >> automatically.
> >> 73!
> >> -Scott, K4KDR
> >> Montpelier, VA USA
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