Hi again, I listened for Alsat-1N ( Pratham ) on the subsequent pass -same frequency and equipment but also with an update to the keps. Those issued on the BBS posting. I regret to inform you that I heard nothing ? The pass was lower and in a sector were I have difficulty due to screening and reflection problems - Weather had also changed with very low cloud,mist and rain. Even AO-73 would not decode the dashboard data in the same sector during the same period.
I am certain about hearing a CW beacon in the previous pass. I had been setting up my gear for an AO-73 in that earlier pass and had USB selected for the downlink data.
Noticed that Alsat-1N was also approaching in the same ball part of time so decided to have a listen on the 145.980 Mhz frequency. That was when I started to hear the CW beacon but still had USB selected I selected CW and got a better copy as it approached. I wish that I been set up to record but of course was not planning for that particular satellite and pass. Had I done so it would have been useful to clarify any doubt about things and I am unsure why the subsequent pass showed no activity. Hopefully the satellite is alive and active and someone else also monitored and maybe even recorded the pass. Ken Eaton GW1FKY
Hello Ken & everyone.
Hoping to confirm Ken's possible Pratham CW beacon reception, I was tracking Pratham on a max 56° pass down the USA East Coast at 14:46 UTC today.
No signal was seen where it "should" have been, but a strong and clear CW beacon appeared below the expected frequency.
Replay of the recording with appropriate demod revealed that the CW in question translated to "M O V E 1".
A Google search lead me to object 39439, cubesat "First Move" which transmits the MOVE1 CW beacon on 145.970.
Adding that satellite to Orbitron and walking back to the time of my pass, the First Move satellite was indeed in the area (trailing the expected track of Pratham).
Running the simulation back to Ken's reception report at 09:45 UTC, First Move was also in his area. And, according to the footprint in Orbitron, First Move would have just been in range of the UK - in fact very close if the time was closer to 09:50 UTC.
I don't know if this is the CW that Ken might have heard, but in any event I unfortunately did not see any transmissions around 145.980 on this morning's pass here that might correlate to Pratham.
-Scott, K4KDR Montpelier, VA USA
=================================
On Wed, Sep 28, 2016 at 9:31 AM, GW1FKY--- via AMSAT-BB [email protected] wrote:
Hi again, I listened for Alsat-1N ( Pratham ) on the subsequent pass -same frequency and equipment but also with an update to the keps. Those issued on the BBS posting. I regret to inform you that I heard nothing ? The pass was lower and in a sector were I have difficulty due to screening and reflection problems - Weather had also changed with very low cloud,mist and rain. Even AO-73 would not decode the dashboard data in the same sector during the same period.
I am certain about hearing a CW beacon in the previous pass. I had been setting up my gear for an AO-73 in that earlier pass and had USB selected for the downlink data.
Noticed that Alsat-1N was also approaching in the same ball part of time so decided to have a listen on the 145.980 Mhz frequency. That was when I started to hear the CW beacon but still had USB selected I selected CW and got a better copy as it approached. I wish that I been set up to record but of course was not planning for that particular satellite and pass. Had I done so it would have been useful to clarify any doubt about things and I am unsure why the subsequent pass showed no activity. Hopefully the satellite is alive and active and someone else also monitored and maybe even recorded the pass. Ken Eaton GW1FKY
Correct me if I am mistaken;
Pratham and AlSat-1N are two different satellites. Pratham is turned on only over India and Europe, and AlSat-1N has a 90 second telemetry beacon 437.650 9K6 FSK. (actually running 4KHz low 437.646)
I have only been able to copy garbled data from AlSat-1n the last three days.
BOB KO6TZ
28 Sept 2016 UTC <<<<<<<<<<<<<<<<<<
16:22 -14>>I03,?,97 (9600 baud): .ì. 16:22 -4>>I02,?,36 (9600 baud): ..H c...„èxW.... 16:22 -9>>UI,?,20 (9600 baud): ‚.æO 16:22 -4>>I02,?,36 (9600 baud): ... ....„èxW.... 16:22 -11>>I00,?,90 (9602 baud): .ì. 16:22 -4>>RNR0,? 16:23 -4>>UNKN,? 16:23 -4>>I27,?,36 (9600 baud): ..H R...ÞèxW.... 16:23 -7>>DM,R 16:23 -4>>UNKN,? 16:23 -9>>UNKN,? 16:25 -4>>I54,?,36 (9598 baud): ..H }...8éxW.... 16:25 -4>>I54,?,36 (9600 baud): ..H }...8éxW.... 16:26 -7>>I03,?,97 (9602 baud): .í. 16:26 -4>>RR0,? 16:26 -4>>I01,?,37 (9600 baud): ..? G...’éxW....
Hello Ken & everyone.
Hoping to confirm Ken's possible Pratham CW beacon reception, I was tracking Pratham on a max 56° pass down the USA East Coast at 14:46 UTC today.
No signal was seen where it "should" have been, but a strong and clear CW beacon appeared below the expected frequency.
Replay of the recording with appropriate demod revealed that the CW in question translated to "M O V E 1".
A Google search lead me to object 39439, cubesat "First Move" which transmits the MOVE1 CW beacon on 145.970.
Adding that satellite to Orbitron and walking back to the time of my pass, the First Move satellite was indeed in the area (trailing the expected track of Pratham).
Running the simulation back to Ken's reception report at 09:45 UTC, First Move was also in his area. And, according to the footprint in Orbitron, First Move would have just been in range of the UK - in fact very close if the time was closer to 09:50 UTC.
I don't know if this is the CW that Ken might have heard, but in any event I unfortunately did not see any transmissions around 145.980 on this morning's pass here that might correlate to Pratham.
-Scott, K4KDR Montpelier, VA USA
=================================
On Wed, Sep 28, 2016 at 9:31 AM, GW1FKY--- via AMSAT-BB <amsat-bb at amsat.org> wrote:
Hi again, I listened for Alsat-1N ( Pratham ) on the subsequent pass -same
frequency
and equipment but also with an update to the keps. Those issued on
the BBS
posting. I regret to inform you that I heard nothing ? The pass was lower
and in
a sector were I have difficulty due to screening and reflection problems - Weather had also changed with very low cloud,mist and rain. Even AO-73 would not decode the dashboard data in the same sector during the same period.
I am certain about hearing a CW beacon in the previous pass. I had been setting up my gear for an AO-73 in that earlier pass and
had USB
selected for the downlink data.
Noticed that Alsat-1N was also approaching in the same ball part of
time
so decided to have a listen on the 145.980 Mhz frequency. That was when I started to hear the CW beacon but still had USB selected I selected CW and got a better copy as it approached. I wish that I been set up to record but of course was not planning
for that
particular satellite and pass. Had I done so it would have been useful to clarify any doubt about things and I am unsure why the subsequent pass showed no activity. Hopefully the satellite is alive and active and someone else also
monitored
and maybe even recorded the pass. Ken Eaton GW1FKY
Hi Bob,
Use the UZ7HO hs_soundmoden and un-tick non-ax25 filter.
Similar to STRaND-1 ALSAT-1N it is not full AX25
Regarding PRATHAM, it should do CW on 145.98 during the whole orbit and AFSK 1200 on 437.455 over there command stations.
But so far nothing heard
73 Jan PE0SAT
On 28-09-2016 18:47, KO6TZ Bob wrote:
Correct me if I am mistaken;
Pratham and AlSat-1N are two different satellites. Pratham is turned on only over India and Europe, and AlSat-1N has a 90 second telemetry beacon 437.650 9K6 FSK. (actually running 4KHz low 437.646)
I have only been able to copy garbled data from AlSat-1n the last three days.
BOB KO6TZ
28 Sept 2016 UTC <<<<<<<<<<<<<<<<<<
16:22 -14>>I03,?,97 (9600 baud): .ì. 16:22 -4>>I02,?,36 (9600 baud): ..H c...„èxW.... 16:22 -9>>UI,?,20 (9600 baud): ‚.æO 16:22 -4>>I02,?,36 (9600 baud): ... ....„èxW.... 16:22 -11>>I00,?,90 (9602 baud): .ì. 16:22 -4>>RNR0,? 16:23 -4>>UNKN,? 16:23 -4>>I27,?,36 (9600 baud): ..H R...ÞèxW.... 16:23 -7>>DM,R 16:23 -4>>UNKN,? 16:23 -9>>UNKN,? 16:25 -4>>I54,?,36 (9598 baud): ..H }...8éxW.... 16:25 -4>>I54,?,36 (9600 baud): ..H }...8éxW.... 16:26 -7>>I03,?,97 (9602 baud): .í. 16:26 -4>>RR0,? 16:26 -4>>I01,?,37 (9600 baud): ..? G...’éxW....
Hello Ken & everyone.
Hoping to confirm Ken's possible Pratham CW beacon reception, I was tracking Pratham on a max 56° pass down the USA East Coast at 14:46 UTC today.
No signal was seen where it "should" have been, but a strong and clear CW beacon appeared below the expected frequency.
Replay of the recording with appropriate demod revealed that the CW in question translated to "M O V E 1".
A Google search lead me to object 39439, cubesat "First Move" which transmits the MOVE1 CW beacon on 145.970.
Adding that satellite to Orbitron and walking back to the time of my pass, the First Move satellite was indeed in the area (trailing the expected track of Pratham).
Running the simulation back to Ken's reception report at 09:45 UTC, First Move was also in his area. And, according to the footprint in Orbitron, First Move would have just been in range of the UK - in fact very close if the time was closer to 09:50 UTC.
I don't know if this is the CW that Ken might have heard, but in any event I unfortunately did not see any transmissions around 145.980 on this morning's pass here that might correlate to Pratham.
-Scott, K4KDR Montpelier, VA USA
=================================
On Wed, Sep 28, 2016 at 9:31 AM, GW1FKY--- via AMSAT-BB <amsat-bb at amsat.org> wrote:
Hi again, I listened for Alsat-1N ( Pratham ) on the subsequent pass -same frequency and equipment but also with an update to the keps. Those issued on the BBS posting. I regret to inform you that I heard nothing ? The pass was lower and in a sector were I have difficulty due to screening and reflection problems - Weather had also changed with very low cloud,mist and rain. Even AO-73 would not decode the dashboard data in the same sector during the same period.
I am certain about hearing a CW beacon in the previous pass. I had been setting up my gear for an AO-73 in that earlier pass and had USB selected for the downlink data.
Noticed that Alsat-1N was also approaching in the same ball part of time so decided to have a listen on the 145.980 Mhz frequency. That was when I started to hear the CW beacon but still had USB selected I selected CW and got a better copy as it approached. I wish that I been set up to record but of course was not planning for that particular satellite and pass. Had I done so it would have been useful to clarify any doubt about things and I am unsure why the subsequent pass showed no activity. Hopefully the satellite is alive and active and someone else also monitored and maybe even recorded the pass. Ken Eaton GW1FKY
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
Jan,
I had UZ7HO_HS installed on my computer, but have not used it much.
On the 18:00 utc pass I tried it out. I certainly copied more than MixW, but did not display any of the telemetry data. What I received were frames like these: 1: <NON-AX25 frame Len=20> [11:07:27R] 1: <NON-AX25 frame Len=19> [11:07:27R] 1: <NON-AX25 frame Len=32> [11:07:27R] 1: <NON-AX25 frame Len=20> [11:07:27R]
I have to work on settings...
Thanks for the help.
BOB KO6TZ
Hi Bob,
Use the UZ7HO hs_soundmoden and un-tick non-ax25 filter.
Similar to STRaND-1 ALSAT-1N it is not full AX25
Regarding PRATHAM, it should do CW on 145.98 during the whole orbit and AFSK 1200 on 437.455 over there command stations.
But so far nothing heard
73 Jan PE0SAT
On 28-09-2016 18:47, KO6TZ Bob wrote:
Correct me if I am mistaken;
Pratham and AlSat-1N are two different satellites. Pratham is turned on only over India and Europe, and AlSat-1N has a 90 second telemetry beacon 437.650 9K6 FSK. (actually running 4KHz low 437.646)
I have only been able to copy garbled data from AlSat-1n the last three days.
BOB KO6TZ
Was this the same pass I just listened to? (I think I'm about 500 mi north west of Bob.)
I was in CW mode listening around 145.980. It certainly did not sound like anything close to packet, but I didn't try FM.
Greg KO6TH
KO6TZ Bob wrote:
Jan,
I had UZ7HO_HS installed on my computer, but have not used it much.
On the 18:00 utc pass I tried it out. I certainly copied more than MixW, but did not display any of the telemetry data. What I received were frames like these: 1: <NON-AX25 frame Len=20> [11:07:27R] 1: <NON-AX25 frame Len=19> [11:07:27R] 1: <NON-AX25 frame Len=32> [11:07:27R] 1: <NON-AX25 frame Len=20> [11:07:27R]
I have to work on settings...
Thanks for the help.
BOB KO6TZ
Hi Bob,
Use the UZ7HO hs_soundmoden and un-tick non-ax25 filter.
Similar to STRaND-1 ALSAT-1N it is not full AX25
Regarding PRATHAM, it should do CW on 145.98 during the whole orbit and AFSK 1200 on 437.455 over there command stations.
But so far nothing heard
73 Jan PE0SAT
On 28-09-2016 18:47, KO6TZ Bob wrote:
Correct me if I am mistaken;
Pratham and AlSat-1N are two different satellites. Pratham is turned on only over India and Europe, and AlSat-1N has a 90 second telemetry beacon 437.650 9K6 FSK. (actually running 4KHz low 437.646)
I have only been able to copy garbled data from AlSat-1n the last three days.
BOB KO6TZ
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
Hi to all,
I saw the same signal over Europe but it was at 145.970 and seems to be MOVE1 as Scott mentioned earlier.
73 Jan
On 28-09-2016 20:31, Greg D wrote:
Was this the same pass I just listened to? (I think I'm about 500 mi north west of Bob.)
I was in CW mode listening around 145.980. It certainly did not sound like anything close to packet, but I didn't try FM.
Greg KO6TH
KO6TZ Bob wrote:
Jan,
I had UZ7HO_HS installed on my computer, but have not used it much.
On the 18:00 utc pass I tried it out. I certainly copied more than MixW, but did not display any of the telemetry data. What I received were frames like these: 1: <NON-AX25 frame Len=20> [11:07:27R] 1: <NON-AX25 frame Len=19> [11:07:27R] 1: <NON-AX25 frame Len=32> [11:07:27R] 1: <NON-AX25 frame Len=20> [11:07:27R]
I have to work on settings...
Thanks for the help.
BOB KO6TZ
Hi Bob,
Use the UZ7HO hs_soundmoden and un-tick non-ax25 filter.
Similar to STRaND-1 ALSAT-1N it is not full AX25
Regarding PRATHAM, it should do CW on 145.98 during the whole orbit and AFSK 1200 on 437.455 over there command stations.
But so far nothing heard
73 Jan PE0SAT
On 28-09-2016 18:47, KO6TZ Bob wrote:
Correct me if I am mistaken;
Pratham and AlSat-1N are two different satellites. Pratham is turned on only over India and Europe, and AlSat-1N has a 90 second telemetry beacon 437.650 9K6 FSK. (actually running 4KHz low 437.646)
I have only been able to copy garbled data from AlSat-1n the last three days.
BOB KO6TZ
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
If it's MOVE1, then something's off. My rig at LOS displayed 145.974.740 (145.975.340 if I change to FM). If Move1 is at 145.970 at TCA, it would have been down around 145.967 at LOS, about 7khz lower than what I heard. I also didn't catch much by way of letters in what I heard. A lot more dits, it seemed. Sorry, but I didn't have a recording set up to capture it. Will try again in about an hour. It's a rather low pass off to the west, so may not be audible.
Greg KO6TH
PE0SAT | Amateur Radio wrote:
Hi to all,
I saw the same signal over Europe but it was at 145.970 and seems to be MOVE1 as Scott mentioned earlier.
73 Jan
On 28-09-2016 20:31, Greg D wrote:
Was this the same pass I just listened to? (I think I'm about 500 mi north west of Bob.)
I was in CW mode listening around 145.980. It certainly did not sound like anything close to packet, but I didn't try FM.
Greg KO6TH
KO6TZ Bob wrote:
Jan,
I had UZ7HO_HS installed on my computer, but have not used it much.
On the 18:00 utc pass I tried it out. I certainly copied more than MixW, but did not display any of the telemetry data. What I received were frames like these: 1: <NON-AX25 frame Len=20> [11:07:27R] 1: <NON-AX25 frame Len=19> [11:07:27R] 1: <NON-AX25 frame Len=32> [11:07:27R] 1: <NON-AX25 frame Len=20> [11:07:27R]
I have to work on settings...
Thanks for the help.
BOB KO6TZ
Hi Bob,
Use the UZ7HO hs_soundmoden and un-tick non-ax25 filter.
Similar to STRaND-1 ALSAT-1N it is not full AX25
Regarding PRATHAM, it should do CW on 145.98 during the whole orbit and AFSK 1200 on 437.455 over there command stations.
But so far nothing heard
73 Jan PE0SAT
On 28-09-2016 18:47, KO6TZ Bob wrote:
Correct me if I am mistaken;
Pratham and AlSat-1N are two different satellites. Pratham is turned on only over India and Europe, and AlSat-1N has a 90 second telemetry beacon 437.650 9K6 FSK. (actually running 4KHz low 437.646)
I have only been able to copy garbled data from AlSat-1n the last three days.
BOB KO6TZ
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
Hello Bob,
Connect AGW Online Kiss (http://www.dk3wn.info/software.shtml) via tcp port to UZ7HO and you will see and save the telemetry.
Good luck and let me know if you have any further questions. Maybe this block diagram can be useful http://www.pe0sat.vgnet.nl/decoding/block-diagram/
73 Jan
On 28-09-2016 20:24, KO6TZ Bob wrote:
Jan,
I had UZ7HO_HS installed on my computer, but have not used it much.
On the 18:00 utc pass I tried it out. I certainly copied more than MixW, but did not display any of the telemetry data. What I received were frames like these: 1: <NON-AX25 frame Len=20> [11:07:27R] 1: <NON-AX25 frame Len=19> [11:07:27R] 1: <NON-AX25 frame Len=32> [11:07:27R] 1: <NON-AX25 frame Len=20> [11:07:27R]
I have to work on settings...
Thanks for the help.
BOB KO6TZ
Hi Bob,
Use the UZ7HO hs_soundmoden and un-tick non-ax25 filter.
Similar to STRaND-1 ALSAT-1N it is not full AX25
Regarding PRATHAM, it should do CW on 145.98 during the whole orbit and AFSK 1200 on 437.455 over there command stations.
But so far nothing heard
73 Jan PE0SAT
On 28-09-2016 18:47, KO6TZ Bob wrote:
Correct me if I am mistaken;
Pratham and AlSat-1N are two different satellites. Pratham is turned on only over India and Europe, and AlSat-1N has a 90 second telemetry beacon 437.650 9K6 FSK. (actually running 4KHz low 437.646)
I have only been able to copy garbled data from AlSat-1n the last three days.
BOB KO6TZ
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
Jan,
I copied and decoded over 90 frames of the 9K6 telemetry.
Thanks for the help.
Another tool / skill for the toolbox.
BOB KO6TZ
2016-09-29 17:04:53.220 UTC: [56 Bytes KISS Frame (without CRC)] from X -4 to &' via "&&'+-7: 1 > 44 20 46 52 4F 4D 20 41 4C 53 41 54 0A 00 00 00 00 00 00 00 21 > 00 00 00 00 00 00 00 00 00 00 D FROM ALSAT..................
Hello Bob,
Connect AGW Online Kiss (http://www.dk3wn.info/software.shtml) via tcp port to UZ7HO and you will see and save the telemetry.
Good luck and let me know if you have any further questions. Maybe this block diagram can be useful http://www.pe0sat.vgnet.nl/decoding/block-diagram/
73 Jan
Just had a directly overhead pass of Pratham here at CM98, 1755 UTC. Heard the CW beacon, but rather weak given the overhead pass, and very chirpy. Strongest signal was just after TCA, but there was surprisingly very little QSB overall. Is it stabilized already?
I couldn't copy the data by ear (too fast), and FLDIGI couldn't make much sense of the signal either, probably due to the chirps and being just above the noise. AOS, TCA, and LOS matched predictions pretty well for object 2016-059C.
Equipment here is a Yaesu FT-847 (CW mode), with a 2x8 element beam and Khune preamp at the rotor. I tried both polarizations, and it didn't seem to matter much. Presume the spacecraft's antennas are linear.
Greg KO6TH
PE0SAT | Amateur Radio wrote:
Regarding PRATHAM, it should do CW on 145.98 during the whole orbit and AFSK 1200 on 437.455 over there command stations.
Bob,
FWIW Pratham is identified in http://celestrak.com/NORAD/elements/tle-new.txt as 2016-059C. I've set a timer to remind me to listen for it this evening, two good passes where I'll hear the CW beacon if it is on.
Simon Brown, GK4ELI http://sdr-radio.com
-----Original Message----- From: AMSAT-BB [mailto:[email protected]] On Behalf Of KO6TZ Bob Sent: 28 September 2016 17:48 To: [email protected] Subject: Re: [amsat-bb] Alsat-1N (Pratham ) - Update
Correct me if I am mistaken;
Pratham and AlSat-1N are two different satellites. Pratham is turned on only over India and Europe, and AlSat-1N has a 90 second telemetry beacon 437.650 9K6 FSK. (actually running 4KHz low 437.646)
I have only been able to copy garbled data from AlSat-1n the last three days.
BOB KO6TZ
Bob, you are right. For AIsat-1N the telemetry can be found at http://www.dk3wn.info/p/?p=75476 73 Nitin [VU3TYG]
From: KO6TZ Bob [email protected] To: [email protected] Sent: Wednesday, 28 September 2016 10:17 PM Subject: Re: [amsat-bb] Alsat-1N (Pratham ) - Update
Correct me if I am mistaken;
Pratham and AlSat-1N are two different satellites. Pratham is turned on only over India and Europe, and AlSat-1N has a 90 second telemetry beacon 437.650 9K6 FSK. (actually running 4KHz low 437.646)
I have only been able to copy garbled data from AlSat-1n the last three days.
BOB KO6TZ
28 Sept 2016 UTC <<<<<<<<<<<<<<<<<<
16:22 -14>>I03,?,97 (9600 baud): .ì. 16:22 -4>>I02,?,36 (9600 baud): ..H c...„èxW.... 16:22 -9>>UI,?,20 (9600 baud): ‚.æO 16:22 -4>>I02,?,36 (9600 baud): ... ....„èxW.... 16:22 -11>>I00,?,90 (9602 baud): .ì. 16:22 -4>>RNR0,? 16:23 -4>>UNKN,? 16:23 -4>>I27,?,36 (9600 baud): ..H R...ÞèxW.... 16:23 -7>>DM,R 16:23 -4>>UNKN,? 16:23 -9>>UNKN,? 16:25 -4>>I54,?,36 (9598 baud): ..H }...8éxW.... 16:25 -4>>I54,?,36 (9600 baud): ..H }...8éxW.... 16:26 -7>>I03,?,97 (9602 baud): .í. 16:26 -4>>RR0,? 16:26 -4>>I01,?,37 (9600 baud): ..? G...’éxW....
Hello Ken & everyone.
Hoping to confirm Ken's possible Pratham CW beacon reception, I was tracking Pratham on a max 56° pass down the USA East Coast at 14:46 UTC today.
No signal was seen where it "should" have been, but a strong and clear CW beacon appeared below the expected frequency.
Replay of the recording with appropriate demod revealed that the CW in question translated to "M O V E 1".
A Google search lead me to object 39439, cubesat "First Move" which transmits the MOVE1 CW beacon on 145.970.
Adding that satellite to Orbitron and walking back to the time of my pass, the First Move satellite was indeed in the area (trailing the expected track of Pratham).
Running the simulation back to Ken's reception report at 09:45 UTC, First Move was also in his area. And, according to the footprint in Orbitron, First Move would have just been in range of the UK - in fact very close if the time was closer to 09:50 UTC.
I don't know if this is the CW that Ken might have heard, but in any event I unfortunately did not see any transmissions around 145.980 on this morning's pass here that might correlate to Pratham.
-Scott, K4KDR Montpelier, VA USA
=================================
On Wed, Sep 28, 2016 at 9:31 AM, GW1FKY--- via AMSAT-BB <amsat-bb at amsat.org> wrote:
Hi again, I listened for Alsat-1N ( Pratham ) on the subsequent pass -same
frequency
and equipment but also with an update to the keps. Those issued on
the BBS
posting. I regret to inform you that I heard nothing ? The pass was lower
and in
a sector were I have difficulty due to screening and reflection problems - Weather had also changed with very low cloud,mist and rain. Even AO-73 would not decode the dashboard data in the same sector during the same period.
I am certain about hearing a CW beacon in the previous pass. I had been setting up my gear for an AO-73 in that earlier pass and
had USB
selected for the downlink data.
Noticed that Alsat-1N was also approaching in the same ball part of
time
so decided to have a listen on the 145.980 Mhz frequency. That was when I started to hear the CW beacon but still had USB selected I selected CW and got a better copy as it approached. I wish that I been set up to record but of course was not planning
for that
particular satellite and pass. Had I done so it would have been useful to clarify any doubt about things and I am unsure why the subsequent pass showed no activity. Hopefully the satellite is alive and active and someone else also
monitored
and maybe even recorded the pass. Ken Eaton GW1FKY
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participants (7)
-
Greg D -
GW1FKY＠aol.com -
KO6TZ Bob -
Nitin Muttin -
PE0SAT | Amateur Radio -
Scott -
Simon Brown