April 2007 - AMSAT-BB - mailman.amsat.org

Libertad decoded again on 2nd pass
by Rob Hardenberg PE1ITR 22 Apr '07

22 Apr '07

All, Libertad-1 decoded again. 2 times in one pass. I found that libertad is about 5KHz lower then expected. This confirms the observation of Mike DK3WN. Using NORAD #31129 !S 22:50:05 !5K3L>5K3USA,BEACON/1 :A00O23C23I23P22R-1_LIBERTAD_1COL_B:65_AA !S 23:00:09 !5K3L>5K3USA,BEACON/1 :A00O25C24I24P21R-6_LIBERTAD_1COL_B:65_AA !S 23:00:11 !5K3L>5K3USA,BEACON/1 :A00O25C24I24P21R-6_LIBERTAD_1COL_B:65_AA !S 23:00:13 !5K3L>5K3USA,BEACON/1 :A00O25C24I24P21R-6_LIBERTAD_1COL_B:65_AA !S 23:00:15 !5K3L>5K3USA,BEACON/1 :A00O25C24I24P21R-6_LIBERTAD_1COL_B:65_AA 73 Rob PE1ITR http://www.pe1itr.com

1 0

Devices needed and a short contact list for AO-51
by Ernest Erickson 22 Apr '07

22 Apr '07

Greetings all! I have a dire need for several GaAs FETs to rebuild some preamps I blew up a couple of years ago, and I have nothing in stock anymore, and they are desperately needed. Here's the 'list' of these parts. ATF21186 (Qty. 4 needed) ATF10736 (Qty. 4 needed) If anybody has at least two of either device and is willing to sell/trade them, I would love to talk to you! Many thanks for your help! Now...On to the contacts. 4.17.07: 17:38 UTC WA8SME, DM08 4.18.07: 03:31 UTC K6YK, John, CM97 4.18.07: 03:35 UTC N5IAY, Wm. Boyer, EM51 4.18:07: 16:21 UTC W6ZQ, DM42, Ronald Cade 4.19:07: 03:54 UTC K7EFZ, DN33, Alan Fielding 4.19.07: 16:31 UTC N7EQF, CN84, Albert Ozias I hope all of the above listed contacts are not in error, but if they are, I appologize as I am 'deaf' without my preamp, but I am doing the best I can with what is available. Thank you to everybody for making AO-51 and all satellite contacts 'FUN' again! * I still miss UO-14 though* Please feel free to Email me directly to confirm all contacts at: aec9823(a)yahoo.com Sincerely Ernest A. Erickson, KA9UCE, DM43ha Ernest A. Erickson, KA9UCE Applied Electronic Communications, AEC 10711 East Verbina Lane Florence, AZ. 85232 520.723.0602 aec9823(a)yahoo.com __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

2 1

Re: LIBERTAD-1 and CP4 keps ? (Correction)
by Mineo Wakita 22 Apr '07

22 Apr '07

By Mike Rupprecht and Rob Hardenberg: OBJECT F = CP4 ? 1 31122U 07012F 07110.62848838 .00000404 00000-0 10000-3 0 99 2 31122 098.0876 185.7595 0085476 203.1259 156.6027 14.54997406 489 OBJECT-M = LIBERTAD-1 ? 1 31129U 07012N 07111.53146356 .00000384 00000-0 10000-3 0 146 2 31129 098.0841 186.6157 0102983 200.1763 159.5363 14.51906899 581

1 0

LIBERTAD-1 and CP4 keps ?
by Mineo Wakita 22 Apr '07

22 Apr '07

By Mike Rupprecht and Rob Hardenberg: OBJECT F = LIBERTAD-1 ? 1 31122U 07012F 07110.62848838 .00000404 00000-0 10000-3 0 99 2 31122 098.0876 185.7595 0085476 203.1259 156.6027 14.54997406 489 OBJECT-M = CP4 ? 1 31129U 07012N 07111.53146356 .00000384 00000-0 10000-3 0 146 2 31129 098.0841 186.6157 0102983 200.1763 159.5363 14.51906899 581 --------------------------------------------- Name: Mineo Wakita / JE9PEL, JAMSAT member Mail: ei7m-wkt(a)asahi-net.or.jp URL : http://www.ne.jp/asahi/hamradio/je9pel/ QTH : Yokohama Japan, GL:pm95tj Date: Apr 22, 2007 ---------------------------------------------

2 1

CP-4 again decoded
by Mike Rupprecht 21 Apr '07

21 Apr '07

All, last pass I could receive again 2 beacons, but only one decode. first becon at 2059UTC CW header was FPEA second at 2104UTC CW header was FPEA ctrl: 3 {UI} PID: F0 {No L3} Total Frame Bytes: 23 from N6CP to N6CP: 1 > 04 43 4F 4D 4D 20 41 .COMM A ctrl: 3 {UI} PID: F0 {No L3} Total Frame Bytes: 113 from N6CP to N6CP: 1 > 01 79 0C 0C 37 30 D3 02 07 03 5B 8F 9E C0 99 03 00 03 98 A6 21 > 80 7D C1 93 01 00 09 BD 28 8A 97 BD 97 03 02 04 A4 5F E8 DC 41 > C4 C9 04 1D 03 88 8F B0 C0 00 05 B8 A1 B8 B8 A8 12 0F 0B 03 61 > 0E 01 77 89 88 B9 B9 83 C7 68 F4 04 00 E7 EC 83 C7 69 F4 9B 81 > FF 12 EF 03 01 00 00 26 26 08 68 01 26 2A 2B 5C C1 The intervall is now 5 minutes (confirm to the last pass) and not 2 minutes! 73, Mike DK3WN

1 0

Libertad decoded!
by Mike Rupprecht 21 Apr '07

21 Apr '07

All, now I could decode the Libertad-1 beacon J 5K3L/BEACON>5K3USA>UI,C,F0: A00O24C23I24P21R-5_LIBERTAD_1COL_B:64_AA 5K3L/BEACON>5K3USA>UI,C,F0: A00O24C23I24P21R-5_LIBERTAD_1COL_B:64_AA 5K3L/BEACON>5K3USA>UI,C,F0 A00O24C23I24P21R-5_LIBERTAD_1COL_B:64_AA 5K3L/BEACON>5K3USA>UI,C,F0: A00O24C23I24P21R-5_LIBERTAD_1COL_B:64_AA 5K3L/BEACON>5K3USA>UI,C,F0: A00O24C23I24P21R-5_LIBERTAD_1COL_B:64_AA The interval is a little more than 10 minutes. I received Libertad in the last pass at 1935UTC but now 2118UTC. So I think there is an additional offset per pass ? I used the Keps for NORAD #31129 and center frequency of 437.245MHz (AFSK, FM). Could decode the packets 3-4 KHz lower. 73, Mike DK3WN

1 0

Libertad transmission
by OZ1MY 21 Apr '07

21 Apr '07

Hi all, Just received short reception from Libertad at 2118 UTC here from Copenhagen. Sounds like AFSK. Used Object M for the tracking. No decoding :-( Have a nice weekend 73 OZ1MY Ib

1 0

Libertad decode
by Rob Hardenberg 21 Apr '07

21 Apr '07

All, I just could decode libertad-1 at 21:18UTC and could 2 packets. Using NORAD #31129. !S 21:18:02 !5K3L>5K3USA,BEACON/1 :A00O24C23I24P21R-5_LIBERTAD_1COL_B:64_AA !S 21:18:07 !5K3L>5K3USA,BEACON/1 :A00O24C23I24P21R-5_LIBERTAD_1COL_B:64_AA 73 Rob PE1ITR http://www.pe1itr.com

1 0

Libertad heard
by Mike Rupprecht 21 Apr '07

21 Apr '07

All, I could hear Libertad-1 at 1935UTC and recorded the 5 packet bursts. But they were too weak to decode. The pass was rather low and I hope results will be better in the next European pass. I used NORAD #31129. 73, Mike DK3WN

1 0

CP-4 decode
by Mike Rupprecht 21 Apr '07

21 Apr '07

All, could decode CP-4 beacon at 19:29:10 UTC uses NORAD #31122 leading cw: FGEA 1k2 FSK frames: ctrl: 3 {UI} PID: F0 {No L3} Total Frame Bytes: 23 from N6CP to N6CP: 04 43 4F 4D 4D 20 42 .COMM B ctrl: 3 {UI} PID: F0 {No L3} Total Frame Bytes: 112 from N6CP to N6CP: 01 49 0C 0B 14 0B B4 02 04 03 72 B6 75 C0 CB 34 21 02 9E C9 69 62 C2 C2 0C 09 08 B9 40 4A 50 BE B3 02 01 03 A8 35 E6 DA C5 AF 00 00 03 87 7D CD C0 00 05 B8 9B B8 B9 C2 10 0F 0C 03 02 78 89 87 BA BA 8B C7 6A F3 FE FF A9 EC 8B C7 6A F4 00 00 49 EF 03 01 00 00 66 26 08 62 01 29 2B 2B 5C F3 73, Mike DK3WN

1 0