CubeBUG-1 On 16-07-2013 10:22 UTC
Date and Time: 16-07-2013 10:22 - 10:35 UTC Object : 2013-018D Max elevation: 50 degree Azimuth : 018 - 183 degree Polarization : LHCP Strongest Signal : max 15 db above noise Frequency : 437.438300 MHz FM +/- doppler Status : Active Remark : Weak Audio
An IQ wav file was recorded with SDRSharp and can be downloaded via the following link: download
AAUSat-3 17 July 2013 18:47 UTC – 19:01 UTC
As always this small Cubesat is strong ….
This is how AAUSat-3 sounds:
AAUSAT3 transmits CSP packets encapsulated in a custom space-link framing format. The radio subsystem works as a router, where subsystems communicate directly with the ground station server.
The spacelink frames start with a variable length training sequence (default 60 bytes), followed by a 6 byte syncword (“OZ3CUB”). The packet format supports two different packet lengths, either 25 or 86 bytes. A one byte Frame Size Marker (FSM) is used to differentiate between long and short packets. The FSM is 0xA6 for short frames and 0x59 for long frames.
Technical Details:
I am not able to decode these signals because as far as I now there is no decoder available to the Amateur Radio community. Would be nice when University’s are using HAM radio frequency space that we the Ham radio community could benefit also.
Main website: AAUSat-3
I had a couple of nice ESTCube-1 passes this day and I gave it a try.
I used my FUNcube Dongle Pro+, SDRSharp, DDE Plugin and SatPC32. To decode the signals I used my sound card modem setup. This gave me a total of 277 frames that I tried to decode with the ESTCube-1 FM decode software from DK3WN.
Below is a raw TLM kiss frame:
2013-07-10 11:35:53.570 UTC: [236 Bytes KISS Frame (without CRC)]
ctrl: 3 PID: F0 {UI} 217 Payload Bytes
from ES5E-11 to ES5EC-1:
1 > 05 06 00 D5 02 42 51 D1 04 E8 18 09 00 C8 00 00 00 95 02 8E
21 > 03 D3 02 6B 03 22 02 99 01 6F 01 66 01 40 01 17 01 13 01 FC
41 > 00 2D 01 6B 01 AE 01 0A 02 90 01 67 01 55 01 54 01 C4 01 08
61 > 02 9D 01 7E 01 54 01 2D 01 4F 01 B2 01 AD 01 C9 01 99 01 A5
81 > 01 7C 01 55 01 31 01 44 01 36 01 15 01 53 01 6E 01 37 01 34
101 > 01 79 01 96 01 61 01 58 01 57 01 8A 01 6C 01 CB 01 52 01 A2
121 > 01 85 01 94 01 5B 01 79 01 5F 01 60 01 5C 01 3B 01 22 01 57
141 > 01 14 01 20 01 0F 01 18 01 0D 01 0E 01 46 01 EA 01 50 01 2C
161 > 01 54 01 B0 01 A3 01 9C 01 4C 01 96 01 A9 01 6D 01 2F 01 62
181 > 01 4E 01 36 01 50 01 AB 01 9A 01 89 01 42 01 61 01 42 01 3F
201 > 01 49 01 9E 01 5F 01 B0 01 A2 01 C7 01 8E 01 99 01
...Õ.BQÑ.è...È...•.Ž.Ó.k.".™.o.f.@.....ü.-.k.®....g.U.T.Ä....~.T.-.O.²..É.™.¥.|.U.1.D.6...S.n.7.4.y.–.a.X.W.Š.l.Ë.R.¢.….”.[.y._.`.\.;.".W... .........F.ê.P.,.T.°.£.œ.L.–.©.m./.b.N.6.P.«.š.‰.B.a.B.?.I.ž._.°.¢.Ç.Ž.™.
Decoded TLM data:
When I used this software it also created a image.raw file but I am unable to convert it into an image. The kiss file can be downloaded at the following location so if somebody else can give it a try, be my guest.
This afternoon my AFEDRI SDR-Net SDR receiver arrived. After some connecting and configuring it is running at a 500k sample rate via the Ethernet interface card and gives me the whole 20m band in one view. The next couple of days I’ll experiment further to see what is possible with this SDR-IP enabled receiver.
Stay tuned and read some experiences in the next couple of weeks.
AFEDRI SDR-Net: website
21-05-2013 16:15 UTC NO-44
RAW AX25:
1:Fm W3ADO-1 To BEACON Via SGATE [18:17:20R] T#016,161,161,048,210,214,11111111,0011,1 1:Fm W3ADO-1 To BEACON Via SGATE [18:20:20R] T#019,093,077,090,132,214,11111111,0010,1
21-05-2013 16:29 HO-68
RAW CW:
BJ1SA XW XW AAA TTT AUV AVT ETT TTT TTT TTT TTT TTT TTT TTT TTT XW XW BJ1SA XW XW AAA TTT AUV TNE ETT TTT TTT TTT TTT TTT TTT TTT TTT XW XW BJ1SA XW XW AAA TTT AUV AVE ETT TTT TTT TTT TTT TTT TTT TTT TTT XW XW BJ1SA XW XW AAA TTT AUV AVE ETT TTT TTT TTT TTT TTT TTT TTT TTT XW XW BJ1SA XW XW AAA TTT AUV AET ETT TTT TTT TTT TTT TTT TTT TTT TTT XW XW BJ1SA XW XW AAA TTT AUV TBT ETT TTT TTT TTT TTT TTT TTT TTT TTT XW XW BJ1SA XW XW AAA TTT AUV A6T ETT TTT TTT TTT TTT TTT TTT TTT TTT XW XW BJ1SA XW XW AAA TTT AUV TDT ETT TTT TTT TTT TTT TTT TTT TTT TTT XW XW BJ1SA XW XW AAA TTT AUV AAE ETT TTT TTT TTT TTT TTT TTT TTT TTT XW XW BJ1SA XW XW AAA TTT AUV TBE ETT TTT TTT TTT TTT TTT TTT TTT TTT XW XW BJ1SA XW XW AAA TTT AUV ATE ETT TTT TTT TTT TTT TTT TTT TTT TTT XW XW
Decoded data:
21-05-2013 16:52 UTC PRISM
RAW CW:
PR94040403F404040403F40403F40403F3F PRA02AAAD5B4E PRB06313020503050B130 PRC//WWW.SPACE.T.U-TOKYO.AC.JP PRD-CARPE DIEMYOUSIEZETHE DAYS... PR000B324A4A420A4A4 PR100A4A51CFCB0700 PR20011231511000000 PR30000000004002F02 PR4002F8002F2C0A00 PR50062000087888875 PR6005E60625F5F5A00
Decoded data:
13-05-2013 09:30 UTC
Date and Time: 13-05-2013 09:20 - 09:30 UTC Object : 2013-018D Max elevation: 15 degree Azimuth : 031 - 149 degree Polarization : RHCP Signal : max 15 db above noise Frequency : 437.438300 MHz FM +/- doppler Status : Active Remark : 10 30
13-05-2013 10:56 UTC
Date and Time: 13-05-2013 10:56 - 11:08 UTC Object : 2013-018D Max elevation: 73 degree Azimuth : 031 - 201 degree Polarization : RHCP Signal : max 20/25 db above noise Frequency : 437.438300 MHz FM +/- doppler Status : Active Remark : Good signals but unable to decode