PSAT PSK31 and LightSail-A


 
Psat0522-0034utc.wav, Psat0605-0052utc_PSK31.wav  received by JA0CAW


PSAT Frequency
 28.120MHz  PSK31  Uplink    (Primary Mission, see NOTE below.)
145.825MHz  Racket Telemetry (1200bps AFSK)
435.350MHz  PSK31  Downlink  (FM 315Hz)
US Naval Academy Amateur Radio Club

PSAT report  by JA0CAW
PSAT report  by JE1CVL
PSAT report  by PE0SAT
LightSail-1 and other CubeSats Launch with X-37B  by AMSAT-UK
PSK31 and APRS CubeSat Status Update  by AMSAT-UK
USNA Sat Status (day1)  by Robert Bruninga
USNA Sat Status (day2)  by Robert Bruninga
USNA Sat Status (day3)  by Robert Bruninga
PSAT Status     (day4)  by Robert Bruninga
PSAT PSK31 FM downlink  #1 by Robert Bruninga
PSAT PSK31 FM downlink  #2 by Robert Bruninga
PSAT Tranponder Specification      by Brno University of Technology
BricSat Transponder Specification  by Brno University of Technology
PSAT etc.  by JE9PEL (EN)
PSAT etc.  by JE9PEL (JP)


I, JE9PEL could decode PSAT PSK31 signal at 22:20 UTC, 23 May 2015.
I used TLE of LightSail-A, and I received at 435.350MHz with the
intention of BRICsat PSK31, but it actually was a signal of PSAT PSK31.
The settings are "NFM reception in SDR#, and PSAT 315Hz / BRICsat 375Hz,
BPSK31 in MixW playback". I could decode finally as RX_frequency = 309Hz.
Because I noticed the part of the call sign of W3ADO-5 in the figure below,
I thought this was the signal from PSAT.

 


PSAT PSK31 Analysis


(C)ARRL

Received by JO1PTD at 22:08 UTC, 24 May 2015
PSAT PSK31 signal
PSAT PSK31 mp3

PSAT PSK31 Approach
Experimental Satellites Laboratory
PSAT Transponder WEB Specification

Example
> W3ADO-5 beacon B 019 09 22 784 250 +8

CALL    identification of the beacon (callsign)              W3ADO-5
beacon  keyword indicating beginning of data                  beacon
MODE    A or B (A - transmitter always on,
        B - transmitter turns on, if BPSK31 signal is present)     B
NOF     number of frame (0 ... 999)                              019
DET     percentage of BPSK31 detection (0 ... 99%)                9%
AGC     percentage of AGC operation (0 ... 99%)                  22%
VC      supply voltage (10 mVolts)                             7.84V
IC      power amplifier current (mAmps)                        250mA
TMP     temperature of PA transistor (deg C)                   +8deg


ULTRASat TLE

LightSail/ULTRASat TLE tracking
ULTRASat spacecraft descriptions
Atlas V ULTRASat Launch 2015
CubeSat Missions Flown
Ultrasat_jspoc.txt
AMSAT-BB

Thursday, May 28 16:30 UTC
ULTRASat1
1 90720U          15148.55800340 +.00015915 +00000-0 +41830-3 0 00151
2 90720 054.9957 305.7261 0249626 201.7290 191.9953 15.12934264001200
ULTRASat2
1 90721U          15148.55880183 +.00021762 +00000-0 +56569-3 0 00135
2 90721 054.9970 305.7165 0249435 201.7510 197.7276 15.13029622001208
ULTRASat3
1 90722U          15148.55988628 +.00024288 +00000-0 +63095-3 0 00148
2 90722 054.9917 305.7171 0249333 201.7254 202.1603 15.12996790001202
ULTRASat4
1 90723U          15148.56049123 +.00010056 +00000-0 +27012-3 0 00123
2 90723 054.9948 305.7217 0249980 201.6664 202.3594 15.12772433001061
ULTRASat5
1 90724U          15148.49354887 +.00009887 +00000-0 +26946-3 0 00127
2 90724 055.0103 306.0668 0250262 201.0171 186.6917 15.12357949001191
ULTRASat6
1 90725U          15148.43160443 +.00017459 +00000-0 +46574-3 0 00140
2 90725 055.0086 306.3265 0249761 200.8643 210.1314 15.12441351001185
ULTRASat7
1 90726U          15148.42781326 +.00013069 +00000-0 +35246-3 0 00135
2 90726 055.0081 306.3680 0249815 200.8687 189.0823 15.12394338001181
ULTRASat8
1 90727U          15148.43204319 +.00016865 +00000-0 +45053-3 0 00133
2 90727 055.0123 306.3380 0249797 200.7527 212.2775 15.12424359001189
ULTRASat9
1 90728U          15148.49387326 +.00017050 +00000-0 +45481-3 0 00110
2 90728 055.0131 306.0678 0249967 200.9166 188.8458 15.12425085001033
ULTRASat10
1 90729U          15148.55978801 +.00010570 +00000-0 +28186-3 0 00148
2 90729 055.0058 305.7490 0250157 201.7152 201.2267 15.12876352001201


The CubeSats are integrated into 8 P-POD deployers which are contained in the
NPSCuL built by the Naval Postgraduate School (NPS). The NPSCuL together with
the 8 P-PODs and 10 CubeSats is referred to as ULTRASat.  ULTRASat's TLE is
currently available from the following two CalPoly's site.
Unique Lightweight Technology and Research Auxiliary Satellite

http://mstl.atl.calpoly.edu/~ops/ultrasat/ultrasat_jspoc.txt
http://mstl.atl.calpoly.edu/~ops/keps/kepler.txt


PSAT PSK31 successful QSO

A successful QSO between JA5BLZ and JA0CAW have been performed on 21:17 UTC,
28 May 2015. And I, JE9PEL found the site to get the related TLE.
We can now track PSAT using TLE of ULTRASat1.

PSAT: 145.825MHz FM 1200baud AX.25 telemetry 315Hz
PSAT: 28.120MHz SSB PSK31 uplink / 435.350MHz FM downlink 970Hz
PSAT PSK31 first QSO
PSAT PSK31 features matrix
PSAT PSK31 satellite transponder
PSAT PSK31 antenna for 28MHz uplink


PSAT digipeater ON




PSAT, ULTRASat1 90720
http://mstl.atl.calpoly.edu/~ops/keps/kepler.txt
http://mstl.atl.calpoly.edu/~ops/ultrasat/ultrasat_jspoc.txt

00:26-00:37 UTC, 7 Jun 2015, Ele 32 WN-N-ES, 145.825MHz 1200bps AFSK

Fm PSAT To APRSON Via ARISS <UI pid=F0 Len=52 >[00:32:18]
s#016785,0z200,GcbGcbGcbHcbHcbHcaHcaHcaHdaHc0Hd0Gd0

Fm PSAT To APRSON Via ARISS <UI pid=F0 Len=34 >[00:32:42]
T#508,857,073,130,129,413,00000000

JA0CAW comment: (Tnx.)
Fm JE9PEL To CQ Via PSAT,ARISS* <UI pid=F0 Len=25 >[22:53:39]
:CQ       :Hello via PSAT


[NOTE] "propagation monitor"

> We are calling this PSK-31 transponder a "propagation monitor"
> because we have chosen the uplink channel to be the center of the
> ten-meter PSK-31 activity to assure that there are lots of signals
> to monitor instead of a dedicated satellite uplink channel. This
> ten meter PSK-31 monitor system allows users to monitor these
> signals from above the ionosphere where propagation effects will be
> noticeable. The downlink from the satellite is in the UHF satellite
> segment on 435.275 MHz where the entire passband can be seen.
> http://aprs.org/psat/AMSAT-2010c.doc


LightSail-A TLE

WB4APR       N2YO         NORAD  code  CalPoly     number
-----------  -----------  -----  ----  ----------  ------
PSAT                                   ULTRASat1   90720
             Langley      40652  025B
             PSAT         40654  025D  ULTRASat3   90722
             BRICSat      40655  025E
LightSail-A                            ULTRASat7   90726
             LightSail-A  40661  027L  ULTRASat8   90727
BRICSat                                ULTRASat10  90729
-----------  -----------  -----  ----  ----------  ------

We found LightSail-A = ULTRASat7 at a later date.


(C) PLANETARY Society


LightSail-A back ON

PSAT, ULTRASat1 90720
http://sail.planetary.org/missioncontrol.php
http://www.satobs.org/LightSail-A.html

16:01-16:15 UTC, 7 Jun 2015, Ele 29 S-E-EN, 437.4345MHz 9600bps FSK

1:Fm KK6HIT-1 To N6CP-X <UI R Pid=CC Len=248> [01:06:13R]
  [IP] Fm 129.65.147.33 To 129.65.147.36 prot=UDP ttl=64 len=248
  [UDP] src_port:50000 dest_port:50800 len=228 data=220

1:Fm KK6HIT-1 To N6CP-X <UI R Pid=CC Len=248> [01:07:28R]
  [IP] Fm 129.65.147.33 To 129.65.147.36 prot=UDP ttl=64 len=248
  [UDP] src_port:50000 dest_port:50800 len=228 data=220

1:Fm KK6HIT-1 To N6CP-X <UI R Pid=CC Len=248> [01:07:58R]
  [IP] Fm 129.65.147.33 To 129.65.147.36 prot=UDP ttl=64 len=248
  [UDP] src_port:50000 dest_port:50800 len=228 data=220


Sails in Space
http://www.planetary.org/blogs/jason-davis/2015/20150608-sails-in-space.html



(C)Planetary Society, DK3WN



(C)Planetary Society, DK3WN

LightSail-A was re-entry to the atmosphere in 14 June 2015.


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