PSAT Summary - Day 3
* PSAT packet telemetry is OK, Digipeater will be off (secondary mission) * PSAT PSK31 transponder is ON with 28.120 MHz uplink! (primary mission) * WOD data fixed. Spin data now available. Right now it is at 3 RPM with +Z pointing at Sun * Launch TLE elements (below) are 6 minutes ahead of satellite * PCSAT.APRS.ORG web page is now also capturing PSAT telelmetry downlinks * BRICSAT telemetry has been heard but is cycling OFF due to low power * BRICSAT PSK31 downlink (also FM) has also been heard barely (when ON) * USS Langley not heard
Only fault so far is the loss of the 4 day-fail-safe backup reset circuit (1 of 3) fail safe backup RESET capabilities. The lack of WOD data was because we had a LOW-POWER bits set that was holding it off.
BRICSAT PSK31 transponder is on identical frequencies as PSAT's. You can tell them apart because one has PSK Telemetry on 315 Hz and the other is on 365 Hz. Both on the UHF FM downlink 435.350 MHz
SUMMARY:
PSAT: 145.825 - 1200 baud AX.25 telemetry - digi off PSAT PSK31#1: 435.350 FM down, 28.120 SSB PK31 uplink - Brno University Xponder
BRICsat: 437.975 - 9600 baud telemetry downlink every 20s BRICsat PSK31#2 - same as PSAT but PSK TLM on 375 Hz (PSAT on 315 Hz)
USS Langley - 437.975 9600 baud telemetry
ULTRASat3 <these now predicting 6 minutes ahead of actual satellite> 1 99993U 15140.67013889 .00040043 00000-0 10235-2 0 00009 2 99993 055.0004 339.9238 0251027 182.3314 074.3075 15.12517086000014
Bob, WB4APR
Congratulations Bob! It looks like another set of successful USNA satellites.
I noticed Space Track isn't publishing keps for these as of yet. I know this has happened with previous DOD launches that had secondary payloads. Do you know if they will eventually provide them to the owners of the satellites (like previous launches) for them to distribute? I'd like to be able to track these automatically, and the current 6 minute difference is a bit much error for an AO-13 class system.
73, Drew KO4MA
-----Original Message----- From: AMSAT-BB [mailto:amsat-bb-bounces@amsat.org] On Behalf Of Robert Bruninga Sent: Friday, May 22, 2015 2:54 PM To: AMSAT BB Subject: [amsat-bb] USNA Sat Status (day 3)
PSAT Summary - Day 3
* PSAT packet telemetry is OK, Digipeater will be off (secondary mission) * PSAT PSK31 transponder is ON with 28.120 MHz uplink! (primary mission) * WOD data fixed. Spin data now available. Right now it is at 3 RPM with +Z pointing at Sun * Launch TLE elements (below) are 6 minutes ahead of satellite * PCSAT.APRS.ORG web page is now also capturing PSAT telelmetry downlinks * BRICSAT telemetry has been heard but is cycling OFF due to low power * BRICSAT PSK31 downlink (also FM) has also been heard barely (when ON) * USS Langley not heard
Only fault so far is the loss of the 4 day-fail-safe backup reset circuit (1 of 3) fail safe backup RESET capabilities. The lack of WOD data was because we had a LOW-POWER bits set that was holding it off.
BRICSAT PSK31 transponder is on identical frequencies as PSAT's. You can tell them apart because one has PSK Telemetry on 315 Hz and the other is on 365 Hz. Both on the UHF FM downlink 435.350 MHz
SUMMARY:
PSAT: 145.825 - 1200 baud AX.25 telemetry - digi off PSAT PSK31#1: 435.350 FM down, 28.120 SSB PK31 uplink - Brno University Xponder
BRICsat: 437.975 - 9600 baud telemetry downlink every 20s BRICsat PSK31#2 - same as PSAT but PSK TLM on 375 Hz (PSAT on 315 Hz)
USS Langley - 437.975 9600 baud telemetry
ULTRASat3 <these now predicting 6 minutes ahead of actual satellite> 1 99993U 15140.67013889 .00040043 00000-0 10235-2 0 00009 2 99993 055.0004 339.9238 0251027 182.3314 074.3075 15.12517086000014
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: http://www.amsat.org/mailman/listinfo/amsat-bb
Yesterday @jasonrdavis (LightSail) tweeted: We may not get a new TLE until Monday, and apparently these aren't posted publicly - though I keep a TLE link at http://sail.planetary.org/missioncontrol
73 Trevor M5AKA
On Saturday, 23 May 2015, 13:46, Andrew Glasbrenner glasbrenner@mindspring.com wrote:
Congratulations Bob! It looks like another set of successful USNA satellites.
I noticed Space Track isn't publishing keps for these as of yet. I know this has happened with previous DOD launches that had secondary payloads. Do you know if they will eventually provide them to the owners of the satellites (like previous launches) for them to distribute? I'd like to be able to track these automatically, and the current 6 minute difference is a bit much error for an AO-13 class system.
73, Drew KO4MA
-----Original Message----- From: AMSAT-BB [mailto:amsat-bb-bounces@amsat.org] On Behalf Of Robert Bruninga Sent: Friday, May 22, 2015 2:54 PM To: AMSAT BB Subject: [amsat-bb] USNA Sat Status (day 3)
PSAT Summary - Day 3
* PSAT packet telemetry is OK, Digipeater will be off (secondary mission) * PSAT PSK31 transponder is ON with 28.120 MHz uplink! (primary mission) * WOD data fixed. Spin data now available. Right now it is at 3 RPM with +Z pointing at Sun * Launch TLE elements (below) are 6 minutes ahead of satellite * PCSAT.APRS.ORG web page is now also capturing PSAT telelmetry downlinks * BRICSAT telemetry has been heard but is cycling OFF due to low power * BRICSAT PSK31 downlink (also FM) has also been heard barely (when ON) * USS Langley not heard
Only fault so far is the loss of the 4 day-fail-safe backup reset circuit (1 of 3) fail safe backup RESET capabilities. The lack of WOD data was because we had a LOW-POWER bits set that was holding it off.
BRICSAT PSK31 transponder is on identical frequencies as PSAT's. You can tell them apart because one has PSK Telemetry on 315 Hz and the other is on 365 Hz. Both on the UHF FM downlink 435.350 MHz
SUMMARY:
PSAT: 145.825 - 1200 baud AX.25 telemetry - digi off PSAT PSK31#1: 435.350 FM down, 28.120 SSB PK31 uplink - Brno University Xponder
BRICsat: 437.975 - 9600 baud telemetry downlink every 20s BRICsat PSK31#2 - same as PSAT but PSK TLM on 375 Hz (PSAT on 315 Hz)
USS Langley - 437.975 9600 baud telemetry
ULTRASat3 <these now predicting 6 minutes ahead of actual satellite> 1 99993U 15140.67013889 .00040043 00000-0 10235-2 0 00009 2 99993 055.0004 339.9238 0251027 182.3314 074.3075 15.12517086000014
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: 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
participants (3)
-
Andrew Glasbrenner -
M5AKA -
Robert Bruninga