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

[Scott]

Hi Robb.  Yes, I'll continue to monitor - don't have another good pass
until tomorrow night and I'll take that opportunity to watch the 26 MHz
area.

Since my initial (false alarm) post, I had one other pass where nothing was
seen around 465 MHz.  So, thanks very much for your frequency
recommendation!

====================================================================

On Fri, Feb 12, 2016 at 2:28 PM, Robb Hill <hill.charles.robert at gmail.com>
wrote:

> 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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> _______________________________________________
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>