Possible KMS-4 Radio Reception w/ video
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
Hi, Scott,
Not heard here in western Europe... will try again on the next pass around 0925 UTC.
73 !
J-P F5YG
On 12/02/2016 02:32, 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 _______________________________________________ Sent via AMSAT-BB@amsat.org. 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
Nor on the next pass, orbit nr 91, around 0930 TU.
73+++ !
J-P F5YG
On 12/02/2016 08:01, Jean-Pierre Godet wrote:
Hi, Scott,
Not heard here in western Europe... will try again on the next pass around 0925 UTC.
73 !
J-P F5YG
On 12/02/2016 02:32, 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 _______________________________________________ Sent via AMSAT-BB@amsat.org. 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 AMSAT-BB@amsat.org. 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
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 _______________________________________________ Sent via AMSAT-BB@amsat.org. 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
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@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 _______________________________________________ Sent via AMSAT-BB@amsat.org. 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
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@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@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 _______________________________________________ Sent via AMSAT-BB@amsat.org. 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 AMSAT-BB@amsat.org. 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
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@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@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@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 _______________________________________________ Sent via AMSAT-BB@amsat.org. 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 AMSAT-BB@amsat.org. 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 AMSAT-BB@amsat.org. 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
Yes indeed, well received the Metop-A on this frequency orb #48430 around 1950 TU. Many thanks Nico.
73 !
J-P F5YG
On Fri, Feb 12, 2016 at 5:51 AM, Nico Janssen hamsat@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
participants (4)
-
Jean-Pierre Godet -
Nico Janssen -
Robb Hill -
Scott