[amsat-bb] Possible KMS-4 Radio Reception w/ video

[Robb Hill]

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.

-Robb
KB3RBA
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
> cool.
>
>
> ===============================================================
>
> 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
> in
> >> the area of 460 Mhz in hopes of seeing a signal with doppler movement
> that
> >> might correspond to the TLE track of the KMS-4 satellite launched by
> North
> >> Korea.
> >>
> >> A very strong signal appeared up near 465.985 and tracked as you would
> >> expect.  Since the signal strength and doppler movement correlated
> nicely
> >> 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
> even
> >> 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
> small
> >> 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
> mark
> >> 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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> >
> >
> _______________________________________________
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