Fwd: USNAP1 lives! - capture UHF data pse
It looks liike PSAT2's sister cubesat finally woke up today (a month after launch) at 0614z on 25 July:
http://www.findu.com/cgi-bin/raw.cgi?call=usnap1-1&time=1
The VHF telemetry shown here has only bus voltage. The digipeater is OFF and will remain off until we find out what happened.
In the mean time, we need all the capture we can get of the 9600 baud downlink on 437.605 MHz +/- Doppler. There is a beacon every 30 seconds.
Bob, WB4APR
So what do we need to copy the downlink data?? Is there an app or is it straight ax.25 packet???
Jeff Moore -- KE7ACY CN94
On Thu, Jul 25, 2019 at 8:27 PM Robert Bruninga via AMSAT-BB < amsat-bb@amsat.org> wrote:
It looks liike PSAT2's sister cubesat finally woke up today (a month after launch) at 0614z on 25 July:
http://www.findu.com/cgi-bin/raw.cgi?call=usnap1-1&time=1
The VHF telemetry shown here has only bus voltage. The digipeater is OFF and will remain off until we find out what happened.
In the mean time, we need all the capture we can get of the 9600 baud downlink on 437.605 MHz +/- Doppler. There is a beacon every 30 seconds.
Bob, WB4APR _______________________________________________ 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: https://www.amsat.org/mailman/listinfo/amsat-bb
Great news, Bob!
Also, any idea (or suspect) what object # it is?
Thanks!
-Scott, K4KDR
===================================
On Thu, Jul 25, 2019 at 11:34 PM Jeff Moore via AMSAT-BB amsat-bb@amsat.org wrote:
So what do we need to copy the downlink data?? Is there an app or is it straight ax.25 packet???
Jeff Moore -- KE7ACY CN94
On Thu, Jul 25, 2019 at 8:27 PM Robert Bruninga via AMSAT-BB < amsat-bb@amsat.org> wrote:
It looks liike PSAT2's sister cubesat finally woke up today (a month
after
launch) at 0614z on 25 July:
http://www.findu.com/cgi-bin/raw.cgi?call=usnap1-1&time=1
The VHF telemetry shown here has only bus voltage. The digipeater is OFF and will remain off until we find out what happened.
In the mean time, we need all the capture we can get of the 9600 baud downlink on 437.605 MHz +/- Doppler. There is a beacon every 30 seconds.
Bob, WB4APR
Standard 9600 baud AX.25. No special software. Just need raw packets.on 447.605
PSAT2 and USNAP1 were delppyed together and have identical external shape and so should be in same orbit, but due to mass differences, USNAP1 should be LEADING PSAT2. We need to know by houw much. Since PSAT2 is likely object 44354, and 44355 is very slightly leading (by 1 minute) that could be it.
Bob
On Thu, Jul 25, 2019 at 11:33 PM Jeff Moore via AMSAT-BB amsat-bb@amsat.org wrote:
So what do we need to copy the downlink data?? Is there an app or is it straight ax.25 packet???
Jeff Moore -- KE7ACY CN94
On Thu, Jul 25, 2019 at 8:27 PM Robert Bruninga via AMSAT-BB < amsat-bb@amsat.org> wrote:
It looks liike PSAT2's sister cubesat finally woke up today (a month
after
launch) at 0614z on 25 July:
http://www.findu.com/cgi-bin/raw.cgi?call=usnap1-1&time=1
The VHF telemetry shown here has only bus voltage. The digipeater is OFF and will remain off until we find out what happened.
In the mean time, we need all the capture we can get of the 9600 baud downlink on 437.605 MHz +/- Doppler. There is a beacon every 30 seconds.
Bob, WB4APR _______________________________________________ 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: https://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: https://www.amsat.org/mailman/listinfo/amsat-bb
FREQ is 437.605 (corrected) Object is 44355 I captured objects via VK6HAM at 151929 to 152812 for PSAT2 and for USNAP1 from 151803 to 152711 showing USNA P1 about a minute ahead of PSAT2.
It is only alive for about 60 to 70 minutes when in the sun apparently by looking at the T# telemetry count.
Bob
On Thu, Jul 25, 2019 at 11:42 PM Robert Bruninga bruninga@usna.edu wrote:
Standard 9600 baud AX.25. No special software. Just need raw packets.on 447.605
PSAT2 and USNAP1 were delppyed together and have identical external shape and so should be in same orbit, but due to mass differences, USNAP1 should be LEADING PSAT2. We need to know by houw much. Since PSAT2 is likely object 44354, and 44355 is very slightly leading (by 1 minute) that could be it.
Bob
On Thu, Jul 25, 2019 at 11:33 PM Jeff Moore via AMSAT-BB < amsat-bb@amsat.org> wrote:
So what do we need to copy the downlink data?? Is there an app or is it straight ax.25 packet???
Jeff Moore -- KE7ACY CN94
On Thu, Jul 25, 2019 at 8:27 PM Robert Bruninga via AMSAT-BB < amsat-bb@amsat.org> wrote:
It looks liike PSAT2's sister cubesat finally woke up today (a month
after
launch) at 0614z on 25 July:
http://www.findu.com/cgi-bin/raw.cgi?call=usnap1-1&time=1
The VHF telemetry shown here has only bus voltage. The digipeater is
OFF
and will remain off until we find out what happened.
In the mean time, we need all the capture we can get of the 9600 baud downlink on 437.605 MHz +/- Doppler. There is a beacon every 30
seconds.
Bob, WB4APR _______________________________________________ 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: https://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: https://www.amsat.org/mailman/listinfo/amsat-bb
Hi Both sats has just passed over here and , according to the signal in my waterfall , USNAP1 is a little ahead than PSAT2 . So , my gess is USNAP is 2019-036S and PSAT2 is 2019-036R . Pictures shows in my waterfall , USNAP above and PSAT2 below ;
https://www.facebook.com/photo.php?fbid=2639663576053343&set=pcb.2639664...
https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail Livre de vírus. www.avast.com https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail. <#m_6738391047400684213_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>
Em sex, 26 de jul de 2019 às 01:20, Robert Bruninga via AMSAT-BB < amsat-bb@amsat.org> escreveu:
FREQ is 437.605 (corrected) Object is 44355 I captured objects via VK6HAM at 151929 to 152812 for PSAT2 and for USNAP1 from 151803 to 152711 showing USNA P1 about a minute ahead of PSAT2.
It is only alive for about 60 to 70 minutes when in the sun apparently by looking at the T# telemetry count.
Bob
On Thu, Jul 25, 2019 at 11:42 PM Robert Bruninga bruninga@usna.edu wrote:
Standard 9600 baud AX.25. No special software. Just need raw packets.on 447.605
PSAT2 and USNAP1 were delppyed together and have identical external shape and so should be in same orbit, but due to mass differences, USNAP1
should
be LEADING PSAT2. We need to know by houw much. Since PSAT2 is likely object 44354, and 44355 is very slightly leading (by 1 minute) that could be it.
Bob
On Thu, Jul 25, 2019 at 11:33 PM Jeff Moore via AMSAT-BB < amsat-bb@amsat.org> wrote:
So what do we need to copy the downlink data?? Is there an app or is
it
straight ax.25 packet???
Jeff Moore -- KE7ACY CN94
On Thu, Jul 25, 2019 at 8:27 PM Robert Bruninga via AMSAT-BB < amsat-bb@amsat.org> wrote:
It looks liike PSAT2's sister cubesat finally woke up today (a month
after
launch) at 0614z on 25 July:
http://www.findu.com/cgi-bin/raw.cgi?call=usnap1-1&time=1
The VHF telemetry shown here has only bus voltage. The digipeater is
OFF
and will remain off until we find out what happened.
In the mean time, we need all the capture we can get of the 9600 baud downlink on 437.605 MHz +/- Doppler. There is a beacon every 30
seconds.
Bob, WB4APR _______________________________________________ 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:
https://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: https://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: https://www.amsat.org/mailman/listinfo/amsat-bb
USNAP1 on 145.825 also uses the call of
USNA14 on 437.605 MHz 9600 baud
And has been added to the http://aprs.org/sats.html web page
*From:* Robert Bruninga bruninga@usna.edu *Sent:* Thursday, July 25, 2019 11:56 PM *To:* amsat bb amsat-bb@amsat.org *Cc:* Jin Kang kang@usna.edu; Jeffery King jking@usna.edu; Robert Bruninga bruninga@usna.edu *Subject:* Re: [amsat-bb] Fwd: USNAP1 lives! - capture UHF data pse -UPDATE
FREQ is 437.605 (corrected)
Object is 44355
I captured objects via VK6HAM at 151929 to 152812 for PSAT2 and for USNAP1 from 151803 to 152711 showing USNA P1 about a minute ahead of PSAT2.
It is only alive for about 60 to 70 minutes when in the sun apparently by looking at the T# telemetry count.
Bob
On Thu, Jul 25, 2019 at 11:42 PM Robert Bruninga bruninga@usna.edu wrote:
Standard 9600 baud AX.25. No special software. Just need raw packets.on 447.605
PSAT2 and USNAP1 were delppyed together and have identical external shape and so should be in same orbit, but due to mass differences, USNAP1 should be LEADING PSAT2. We need to know by houw much. Since PSAT2 is likely object 44354, and 44355 is very slightly leading (by 1 minute) that could be it.
Bob
On Thu, Jul 25, 2019 at 11:33 PM Jeff Moore via AMSAT-BB amsat-bb@amsat.org wrote:
So what do we need to copy the downlink data?? Is there an app or is it straight ax.25 packet???
Jeff Moore -- KE7ACY CN94
On Thu, Jul 25, 2019 at 8:27 PM Robert Bruninga via AMSAT-BB < amsat-bb@amsat.org> wrote:
It looks liike PSAT2's sister cubesat finally woke up today (a month after launch) at 0614z on 25 July:
http://www.findu.com/cgi-bin/raw.cgi?call=usnap1-1&time=1
The VHF telemetry shown here has only bus voltage. The digipeater is OFF and will remain off until we find out what happened.
In the mean time, we need all the capture we can get of the 9600 baud downlink on 437.605 MHz +/- Doppler. There is a beacon every 30 seconds.
Bob, WB4APR _______________________________________________ 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: https://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: https://www.amsat.org/mailman/listinfo/amsat-bb
Hi Bob,
At SatNOGS, we are getting some good 437.605 MHz 9k6 signals from BRICSat-2/USNAP-1 . They haven't automatically decoded yet, perhaps due to the 5kHz frequency offset. But you can download the audio file and you should be able to decode them.
Here are some good ones:
https://network.satnogs.org/observations/861257/ https://network.satnogs.org/observations/861256/ https://network.satnogs.org/observations/861250/
Future good observations will be displayed here:
https://network.satnogs.org/observations/?future=0&bad=0&unvetted=0&...
Good luck!!
73, Alan KU2Y
On Fri, Jul 26, 2019 at 8:22 AM Robert Bruninga via AMSAT-BB < amsat-bb@amsat.org> wrote:
USNAP1 on 145.825 also uses the call of
USNA14 on 437.605 MHz 9600 baud
And has been added to the http://aprs.org/sats.html web page
*From:* Robert Bruninga bruninga@usna.edu *Sent:* Thursday, July 25, 2019 11:56 PM *To:* amsat bb amsat-bb@amsat.org *Cc:* Jin Kang kang@usna.edu; Jeffery King jking@usna.edu; Robert Bruninga bruninga@usna.edu *Subject:* Re: [amsat-bb] Fwd: USNAP1 lives! - capture UHF data pse -UPDATE
FREQ is 437.605 (corrected)
Object is 44355
I captured objects via VK6HAM at 151929 to 152812 for PSAT2 and for USNAP1 from 151803 to 152711 showing USNA P1 about a minute ahead of PSAT2.
It is only alive for about 60 to 70 minutes when in the sun apparently by looking at the T# telemetry count.
Bob
On Thu, Jul 25, 2019 at 11:42 PM Robert Bruninga bruninga@usna.edu wrote:
Standard 9600 baud AX.25. No special software. Just need raw packets.on 447.605
PSAT2 and USNAP1 were delppyed together and have identical external shape and so should be in same orbit, but due to mass differences, USNAP1 should be LEADING PSAT2. We need to know by houw much. Since PSAT2 is likely object 44354, and 44355 is very slightly leading (by 1 minute) that could be it.
Bob
On Thu, Jul 25, 2019 at 11:33 PM Jeff Moore via AMSAT-BB < amsat-bb@amsat.org> wrote:
So what do we need to copy the downlink data?? Is there an app or is it straight ax.25 packet???
Jeff Moore -- KE7ACY CN94
On Thu, Jul 25, 2019 at 8:27 PM Robert Bruninga via AMSAT-BB < amsat-bb@amsat.org> wrote:
It looks liike PSAT2's sister cubesat finally woke up today (a month
after
launch) at 0614z on 25 July:
http://www.findu.com/cgi-bin/raw.cgi?call=usnap1-1&time=1
The VHF telemetry shown here has only bus voltage. The digipeater is OFF and will remain off until we find out what happened.
In the mean time, we need all the capture we can get of the 9600 baud downlink on 437.605 MHz +/- Doppler. There is a beacon every 30 seconds.
Bob, WB4APR _______________________________________________ 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: https://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: https://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: https://www.amsat.org/mailman/listinfo/amsat-bb
We are guessing at the 437.605 center freq. It was purchased as 437.600 but we think we remember it did better at 437.605 on one of our radios.
Do you see an offset? If so, simply ceneter where you see it. And see if decodes are better.
Thanks
Bob
*From:* Alan Johnston alan.b.johnston@gmail.com *Sent:* Friday, July 26, 2019 12:26 PM *To:* Robert Bruninga bruninga@usna.edu *Cc:* amsat bb amsat-bb@amsat.org; Jeff King jking@usna.edu; Jin Kang < kang@usna.edu> *Subject:* Re: [amsat-bb] Fwd: USNAP1 lives! - capture UHF data pse -UPDATE
Hi Bob,
At SatNOGS, we are getting some good 437.605 MHz 9k6 signals from BRICSat-2/USNAP-1 . They haven't automatically decoded yet, perhaps due to the 5kHz frequency offset. But you can download the audio file and you should be able to decode them.
Here are some good ones:
https://network.satnogs.org/observations/861257/
https://network.satnogs.org/observations/861256/
https://network.satnogs.org/observations/861250/
Future good observations will be displayed here:
https://network.satnogs.org/observations/?future=0&bad=0&unvetted=0&...
Good luck!!
73,
Alan
KU2Y
On Fri, Jul 26, 2019 at 8:22 AM Robert Bruninga via AMSAT-BB < amsat-bb@amsat.org> wrote:
USNAP1 on 145.825 also uses the call of
USNA14 on 437.605 MHz 9600 baud
And has been added to the http://aprs.org/sats.html web page
*From:* Robert Bruninga bruninga@usna.edu *Sent:* Thursday, July 25, 2019 11:56 PM *To:* amsat bb amsat-bb@amsat.org *Cc:* Jin Kang kang@usna.edu; Jeffery King jking@usna.edu; Robert Bruninga bruninga@usna.edu *Subject:* Re: [amsat-bb] Fwd: USNAP1 lives! - capture UHF data pse -UPDATE
FREQ is 437.605 (corrected)
Object is 44355
I captured objects via VK6HAM at 151929 to 152812 for PSAT2 and for USNAP1 from 151803 to 152711 showing USNA P1 about a minute ahead of PSAT2.
It is only alive for about 60 to 70 minutes when in the sun apparently by looking at the T# telemetry count.
Bob
On Thu, Jul 25, 2019 at 11:42 PM Robert Bruninga bruninga@usna.edu wrote:
Standard 9600 baud AX.25. No special software. Just need raw packets.on 447.605
PSAT2 and USNAP1 were delppyed together and have identical external shape and so should be in same orbit, but due to mass differences, USNAP1 should be LEADING PSAT2. We need to know by houw much. Since PSAT2 is likely object 44354, and 44355 is very slightly leading (by 1 minute) that could be it.
Bob
On Thu, Jul 25, 2019 at 11:33 PM Jeff Moore via AMSAT-BB <amsat-bb@amsat.org
wrote:
So what do we need to copy the downlink data?? Is there an app or is it straight ax.25 packet???
Jeff Moore -- KE7ACY CN94
On Thu, Jul 25, 2019 at 8:27 PM Robert Bruninga via AMSAT-BB < amsat-bb@amsat.org> wrote:
It looks liike PSAT2's sister cubesat finally woke up today (a month after launch) at 0614z on 25 July:
http://www.findu.com/cgi-bin/raw.cgi?call=usnap1-1&time=1
The VHF telemetry shown here has only bus voltage. The digipeater is OFF and will remain off until we find out what happened.
In the mean time, we need all the capture we can get of the 9600 baud downlink on 437.605 MHz +/- Doppler. There is a beacon every 30 seconds.
Bob, WB4APR _______________________________________________ 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: https://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: https://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: https://www.amsat.org/mailman/listinfo/amsat-bb
Hi Bob,
Fredy at SatNOGS managed to decode one frame from these observations:
[0.4] USNA14-5>APUSNA,TELEM:{BR0000003463,0000003463,BV7.5,BT23,BC+166,BB57, 12B3,5B47,3B54,XV6.5,X+C6,X+T-9,X-C360,X-T23,YV3.8,Y+C6,Y+T-10,Y-C190 ,Y-T63,ZV3.4,Z-C53,Z-T0,XG-13.2,YG-19.0,ZG2.4,XM-51.9,YM-134.3,ZM317.4,GT7, 0100 ------ U frame UI: p/f=0, No layer 3 protocol implemented., length = 219 dest APUSNA 0 c/r=0 res=3 last=0 source USNA14 5 c/r=0 res=3 last=0 digi 1 TELEM 0 h=0 res=3 last=1 000: 82 a0 aa a6 9c 82 60 aa a6 9c 82 62 68 6a a8 8a ......`....bhj.. 010: 98 8a 9a 40 61 03 f0 7b 42 52 30 30 30 30 30 30 ...@a..{BR000000 020: 33 34 36 33 2c 30 30 30 30 30 30 33 34 36 33 2c 3463,0000003463, 030: 42 56 37 2e 35 2c 42 54 32 33 2c 42 43 2b 31 36 BV7.5,BT23,BC+16 040: 36 2c 42 42 35 37 2c 31 32 42 33 2c 35 42 34 37 6,BB57,12B3,5B47 050: 2c 33 42 35 34 2c 58 56 36 2e 35 2c 58 2b 43 36 ,3B54,XV6.5,X+C6 060: 2c 58 2b 54 2d 39 2c 58 2d 43 33 36 30 2c 58 2d ,X+T-9,X-C360,X- 070: 54 32 33 2c 59 56 33 2e 38 2c 59 2b 43 36 2c 59 T23,YV3.8,Y+C6,Y 080: 2b 54 2d 31 30 2c 59 2d 43 31 39 30 2c 59 2d 54 +T-10,Y-C190,Y-T 090: 36 33 2c 5a 56 33 2e 34 2c 5a 2d 43 35 33 2c 5a 63,ZV3.4,Z-C53,Z 0a0: 2d 54 30 2c 58 47 2d 31 33 2e 32 2c 59 47 2d 31 -T0,XG-13.2,YG-1 0b0: 39 2e 30 2c 5a 47 32 2e 34 2c 58 4d 2d 35 31 2e 9.0,ZG2.4,XM-51. 0c0: 39 2c 59 4d 2d 31 33 34 2e 33 2c 5a 4d 33 31 37 9,YM-134.3,ZM317 0d0: 2e 34 2c 47 54 37 2c 30 31 30 30 .4,GT7,0100 ------ We were curious why 9k6 was chosen, as it seems to be difficult to decode even with these strong signals on a high pass.
73, Alan KU2Y
On Fri, Jul 26, 2019 at 12:31 PM Robert Bruninga bruninga@usna.edu wrote:
We are guessing at the 437.605 center freq. It was purchased as 437.600 but we think we remember it did better at 437.605 on one of our radios.
Do you see an offset? If so, simply ceneter where you see it. And see if decodes are better.
Thanks
Bob
*From:* Alan Johnston alan.b.johnston@gmail.com *Sent:* Friday, July 26, 2019 12:26 PM *To:* Robert Bruninga bruninga@usna.edu *Cc:* amsat bb amsat-bb@amsat.org; Jeff King jking@usna.edu; Jin Kang kang@usna.edu *Subject:* Re: [amsat-bb] Fwd: USNAP1 lives! - capture UHF data pse -UPDATE
Hi Bob,
At SatNOGS, we are getting some good 437.605 MHz 9k6 signals from BRICSat-2/USNAP-1 . They haven't automatically decoded yet, perhaps due to the 5kHz frequency offset. But you can download the audio file and you should be able to decode them.
Here are some good ones:
https://network.satnogs.org/observations/861257/
https://network.satnogs.org/observations/861256/
https://network.satnogs.org/observations/861250/
Future good observations will be displayed here:
https://network.satnogs.org/observations/?future=0&bad=0&unvetted=0&...
Good luck!!
73,
Alan
KU2Y
On Fri, Jul 26, 2019 at 8:22 AM Robert Bruninga via AMSAT-BB < amsat-bb@amsat.org> wrote:
USNAP1 on 145.825 also uses the call of
USNA14 on 437.605 MHz 9600 baud
And has been added to the http://aprs.org/sats.html web page
*From:* Robert Bruninga bruninga@usna.edu *Sent:* Thursday, July 25, 2019 11:56 PM *To:* amsat bb amsat-bb@amsat.org *Cc:* Jin Kang kang@usna.edu; Jeffery King jking@usna.edu; Robert Bruninga bruninga@usna.edu *Subject:* Re: [amsat-bb] Fwd: USNAP1 lives! - capture UHF data pse -UPDATE
FREQ is 437.605 (corrected)
Object is 44355
I captured objects via VK6HAM at 151929 to 152812 for PSAT2 and for USNAP1 from 151803 to 152711 showing USNA P1 about a minute ahead of PSAT2.
It is only alive for about 60 to 70 minutes when in the sun apparently by looking at the T# telemetry count.
Bob
On Thu, Jul 25, 2019 at 11:42 PM Robert Bruninga bruninga@usna.edu wrote:
Standard 9600 baud AX.25. No special software. Just need raw packets.on 447.605
PSAT2 and USNAP1 were delppyed together and have identical external shape and so should be in same orbit, but due to mass differences, USNAP1 should be LEADING PSAT2. We need to know by houw much. Since PSAT2 is likely object 44354, and 44355 is very slightly leading (by 1 minute) that could be it.
Bob
On Thu, Jul 25, 2019 at 11:33 PM Jeff Moore via AMSAT-BB < amsat-bb@amsat.org> wrote:
So what do we need to copy the downlink data?? Is there an app or is it straight ax.25 packet???
Jeff Moore -- KE7ACY CN94
On Thu, Jul 25, 2019 at 8:27 PM Robert Bruninga via AMSAT-BB < amsat-bb@amsat.org> wrote:
It looks liike PSAT2's sister cubesat finally woke up today (a month
after
launch) at 0614z on 25 July:
http://www.findu.com/cgi-bin/raw.cgi?call=usnap1-1&time=1
The VHF telemetry shown here has only bus voltage. The digipeater is OFF and will remain off until we find out what happened.
In the mean time, we need all the capture we can get of the 9600 baud downlink on 437.605 MHz +/- Doppler. There is a beacon every 30 seconds.
Bob, WB4APR _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership.
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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: https://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: https://www.amsat.org/mailman/listinfo/amsat-bb
I am still confused about USNAP1.
Will it use the BRICSAT-2 name as identification or "USNAP1" ?
This is what is registered at the IARU coordination website: http://www.amsatuk.me.uk/iaru/finished_detail.php?serialnum=472
Then it becomes even more confusing.
Hi,
I decoded at least one packet from USNAP1-1 around late last week. It showed up in my mheard list and had me looking for who was it. Never occurred to me to contact you about that. I’m not logging raw packets so I can’t retrieve what the contents were, and findu doesn’t show it anymore...
73 Pedro CU2ZG
Sent from my iPhone Please excuse any typos or briefness
On 26 Jul 2019, at 03:25, Robert Bruninga via AMSAT-BB amsat-bb@amsat.org wrote:
It looks liike PSAT2's sister cubesat finally woke up today (a month after launch) at 0614z on 25 July:
http://www.findu.com/cgi-bin/raw.cgi?call=usnap1-1&time=1
The VHF telemetry shown here has only bus voltage. The digipeater is OFF and will remain off until we find out what happened.
In the mean time, we need all the capture we can get of the 9600 baud downlink on 437.605 MHz +/- Doppler. There is a beacon every 30 seconds.
Bob, WB4APR _______________________________________________ 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: https://www.amsat.org/mailman/listinfo/amsat-bb
-- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.
Thanks for remembering that! Bob
-----Original Message----- From: Pedro Dutra Sousa pedro@dutrasousa.name Sent: Friday, July 26, 2019 5:27 AM To: Robert Bruninga bruninga@usna.edu Cc: amsat bb amsat-bb@amsat.org; Jin Kang kang@usna.edu Subject: Re: [amsat-bb] Fwd: USNAP1 lives! - capture UHF data pse
Hi,
I decoded at least one packet from USNAP1-1 around late last week. It showed up in my mheard list and had me looking for who was it. Never occurred to me to contact you about that. I’m not logging raw packets so I can’t retrieve what the contents were, and findu doesn’t show it anymore...
73 Pedro CU2ZG
Sent from my iPhone Please excuse any typos or briefness
On 26 Jul 2019, at 03:25, Robert Bruninga via AMSAT-BB amsat-bb@amsat.org wrote:
It looks liike PSAT2's sister cubesat finally woke up today (a month after launch) at 0614z on 25 July:
http://www.findu.com/cgi-bin/raw.cgi?call=usnap1-1&time=1
The VHF telemetry shown here has only bus voltage. The digipeater is OFF and will remain off until we find out what happened.
In the mean time, we need all the capture we can get of the 9600 baud downlink on 437.605 MHz +/- Doppler. There is a beacon every 30 seconds.
Bob, WB4APR _______________________________________________ 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: https://www.amsat.org/mailman/listinfo/amsat-bb
-- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.
-- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.
participants (7)
-
Alan Johnston -
Jeff Moore -
PE0SAT | Amateur Radio -
Pedro Dutra Sousa -
PY5LF -
Robert Bruninga -
Scott