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

Re: FM on VO-52 or others
by Anthony Monteiro 24 Apr '07

24 Apr '07

At 05:16 PM 4/23/2007, Thomas McGrane wrote: >... >Using FM on VO-52 is not ignorant. We assume the world is as affluent as us >but even here in north america, there are many who do not have SSB equipment >as evidenced by the popularity of ao-51 and the lack of operators on VO-52 >... Hi Pat, The issue with FM on a linear transponder is that to peacefully coexist with SSB you would need to transmit around 10 dB lower EIRP in order to have about the same load on the satellite transmitter. And since it takes a few extra dB to decode FM, you would need to use a much bigger receive antenna to make up for the much lower signal levels. If you don't TX with the lower power, you basically turn the linear transponder into a single channel FM satellite and no one else can use it. However, your point about the lack of activity on VO-52 is well taken. Other than on field day, I hardly ever hear anyone using it so it might as well be a single channel FM bird. 73, Tony AA2TX

1 0

P3E launch date
by Joseph Holman 23 Apr '07

23 Apr '07

Is there a more precise launch date for P3E other than the "2007-2008 timeframe" the vehicle's web page mentions? Joe, AD7D.

1 0

K3SZH heard via AO-7 in JN70ES
by i8cvs 23 Apr '07

23 Apr '07

Hi Josef, K3SZH I have just heard your CQ call in SSB 59 via AO-07 during orbit 48432 at 21:14 UTC here in JN70ES I was just closing my activity via VO-52 and I got not the time to change my uplink frequency to call you. If you arrange a good orbit when you are available we can try SSB between FN10OG and JN70ES Please let me know off list 73" de i8CVS Domenico

1 0

Re: CAPE's Back
by Mike Rupprecht 23 Apr '07

23 Apr '07

Jonathan, beacon 1 in the last pass started 19:37:34 UTC. And now: AOS 2106 UTC (CAPE in darkness) 21:07:58 k5usl 2 00 ff e3 e1 e3 e1 e1 04 00 21:10:24 k5usl 3 00 00 00 00 00 00 21:12 UTC - end of eclipse - 21:12:50 k5usl 1 9d 00 de dc 00 0a 00 68 21:15:17 k5usl 2 00 ff ea ed e8 ee e3 01 fd 21:17:44 k5usl 3 00 05 00 00 00 02 21:20:12 k5usl 1 9d 00 ff ff 00 00 00 00 LOS 2121 UTC 73, Mike DK3WN -----Ursprüngliche Nachricht----- Von: Jonathan Wagner [mailto:jonathan@jonathanwagner.net] Gesendet: Montag, 23. April 2007 23:09 An: Mike Rupprecht Betreff: Re: AW: AW: [amsat-bb] CAPE's Back Thanks, Do you know what time the beacon 1 started? We were thinking that the batteries may have been gone due to overcharging. But it looks like they are taking in some current? I hope you're copying your next pass. I think the sat may be in complete eclipse and that will help us determine whether we are solar only or not. Thanks again, Jonathan Wagner Mike Rupprecht wrote: > Hi Jonathan, > > CAPE was in darkness until 1933UTC. > > 73, Mike > > -----Ursprüngliche Nachricht----- > Von: Jonathan Wagner [mailto:jonathan@jonathanwagner.net] > Gesendet: Montag, 23. April 2007 22:56 > An: Mike Rupprecht > Cc: amsat-bb(a)amsat.org > Betreff: Re: AW: [amsat-bb] CAPE's Back > > Thanks for the report Mike! We are very excited here and your data just > adds to the excitement. Judging by SatPC it looks like the satellite > may have been in eclipse. Is this true? > > Jonathan Wagner > > > > > Mike Rupprecht wrote: > >> Jonathan, >> >> wow, very strong signal!!! >> >> AOS 1930 >> LOS 1942 >> Keps for 21120 matches perfect >> >> K5usl 2 ff ff e1 e0 e1 e1 df 02 ff >> K5usl 3 1c 00 00 04 3f 00 >> K5usl 1 9d 00 e0 de 00 0a 00 61 >> K5usl 2 ff ff f3 ed f5 f8 e5 00 fd >> >> Did anybody decode the 9k6 part of the beacon? >> I switched to FM mode during this part and the DCE LED lit but could not >> > see > >> any data. >> >> 73, Mike >> DK3WN >> >> >> -----Ursprüngliche Nachricht----- >> Von: Jonathan Wagner [mailto:jonathan@jonathanwagner.net] >> Gesendet: Montag, 23. April 2007 20:56 >> An: Mike Rupprecht; amsat-bb(a)amsat.org >> Betreff: Re: [amsat-bb] CAPE's Back >> >> Mike and the rest of the list, >> >> CAPE-1 almost perfectly tracks with Object 31129. AOS on the last pass >> was 30secs. after predicted and LOS 10-20 secs. before predicted. >> Frequency was nominal. There is a building that is directly in the line >> of sight when on the AOS horizon which affects the lower 1 or 2 degrees >> elevation (The building is a 3-story building and we have a 20 ft tower >> on top of a 2 story building. Frequency was nominal and rotor and >> frequency control were left to the radio. Signal strength was S7 on a 4 >> degree pass. >> >> Jonathan Wagner, KE5FSG >> >> Mike Rupprecht wrote: >> >> >>> Hi Jonathan, >>> >>> could you tell us the used Keps (Object) ? >>> >>> Thank, Mike >>> >>> -----Ursprüngliche Nachricht----- >>> Von: amsat-bb-bounces(a)amsat.org [mailto:amsat-bb-bounces@amsat.org] Im >>> Auftrag von Jonathan Wagner >>> Gesendet: Montag, 23. April 2007 18:52 >>> An: Robert Henry >>> Cc: LaBerteaux(a)gmail.com; jld9905(a)louisiana.edu; shawng(a)getgds.com; >>> cbb5364(a)louisiana.edu; baj3556(a)louisiana.edu; reb2548(a)louisiana.edu; >>> bpb5344(a)louisiana.edu; falcanary(a)yahoo.com; jd.harrist(a)gmail.com; >>> pauldarby(a)ieee.org; amsat-bb(a)amsat.org; hjg1359(a)louisiana.edu; >>> sean(a)globalcomnet.com; kpm1725(a)louisiana.edu; mmm1536(a)louisiana.edu >>> Betreff: [amsat-bb] CAPE's Back >>> >>> Hi all, >>> >>> CAPE-1's back and loud. Just had an excellent pass over CAPE ground >>> station with strong signal (operating remotely, so no definite signal >>> reading). Copied at least 4 or 5 CW beacons and fixing to go back and >>> decode. Will update on status after packet decode. >>> >>> Jonathan Wagner, KE5FSG >>> >>> >>> _______________________________________________ >>> Sent via AMSAT-BB(a)amsat.org. Opinions expressed are those of the author. >>> Not an AMSAT-NA member? Join now to support the amateur satellite >>> > program! > >>> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb >>> >>> >>> ____________ >>> Virus checked by G DATA AntiVirusKit >>> Version: AVK 17.4162 from 22.04.2007 >>> Virus news: www.antiviruslab.com >>> >>> >>> >>> >>> >> >> ____________ >> Virus checked by G DATA AntiVirusKit >> Version: AVK 17.4185 from 23.04.2007 >> Virus news: www.antiviruslab.com >> >> >> >> > > > ____________ > Virus checked by G DATA AntiVirusKit > Version: AVK 17.4185 from 23.04.2007 > Virus news: www.antiviruslab.com > > > ____________ Virus checked by G DATA AntiVirusKit Version: AVK 17.4185 from 23.04.2007 Virus news: www.antiviruslab.com

1 0

Re: CAPE's Back
by G0MRF＠aol.com 23 Apr '07

23 Apr '07

Congratulations Jonathan and the CAPE 1 team I see an initial report on W0KRPs site suggests that the satellite is running on solar panel power alone as there is no battery current shown in telemetry. If that's correct: My congratulations to the designer of the EPS who has found the solution to that age old AMSAT problem of not killing the satellite when the batteries fail But my commiserations on the batteries. 73 David G0MRF In a message dated 23/04/2007 19:13:29 GMT Standard Time, jonathan(a)jonathanwagner.net writes: Mike and the rest of the list, CAPE-1 almost perfectly tracks with Object 31129. AOS on the last pass was 30secs. after predicted and LOS 10-20 secs. before predicted. Frequency was nominal. There is a building that is directly in the line of sight when on the AOS horizon which affects the lower 1 or 2 degrees elevation (The building is a 3-story building and we have a 20 ft tower on top of a 2 story building. Frequency was nominal and rotor and frequency control were left to the radio. Signal strength was S7 on a 4 degree pass. Jonathan Wagner, KE5FSG

2 1

Re: CAPE's Back
by Jonathan Wagner 23 Apr '07

23 Apr '07

Mike and the rest of the list, CAPE-1 almost perfectly tracks with Object 31129. AOS on the last pass was 30secs. after predicted and LOS 10-20 secs. before predicted. Frequency was nominal. There is a building that is directly in the line of sight when on the AOS horizon which affects the lower 1 or 2 degrees elevation (The building is a 3-story building and we have a 20 ft tower on top of a 2 story building. Frequency was nominal and rotor and frequency control were left to the radio. Signal strength was S7 on a 4 degree pass. Jonathan Wagner, KE5FSG Mike Rupprecht wrote: > Hi Jonathan, > > could you tell us the used Keps (Object) ? > > Thank, Mike > > -----Ursprüngliche Nachricht----- > Von: amsat-bb-bounces(a)amsat.org [mailto:amsat-bb-bounces@amsat.org] Im > Auftrag von Jonathan Wagner > Gesendet: Montag, 23. April 2007 18:52 > An: Robert Henry > Cc: LaBerteaux(a)gmail.com; jld9905(a)louisiana.edu; shawng(a)getgds.com; > cbb5364(a)louisiana.edu; baj3556(a)louisiana.edu; reb2548(a)louisiana.edu; > bpb5344(a)louisiana.edu; falcanary(a)yahoo.com; jd.harrist(a)gmail.com; > pauldarby(a)ieee.org; amsat-bb(a)amsat.org; hjg1359(a)louisiana.edu; > sean(a)globalcomnet.com; kpm1725(a)louisiana.edu; mmm1536(a)louisiana.edu > Betreff: [amsat-bb] CAPE's Back > > Hi all, > > CAPE-1's back and loud. Just had an excellent pass over CAPE ground > station with strong signal (operating remotely, so no definite signal > reading). Copied at least 4 or 5 CW beacons and fixing to go back and > decode. Will update on status after packet decode. > > Jonathan Wagner, KE5FSG > > > _______________________________________________ > Sent via AMSAT-BB(a)amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > ____________ > Virus checked by G DATA AntiVirusKit > Version: AVK 17.4162 from 22.04.2007 > Virus news: www.antiviruslab.com > > >

2 2

CAPE's Back
by Jonathan Wagner 23 Apr '07

23 Apr '07

Hi all, CAPE-1's back and loud. Just had an excellent pass over CAPE ground station with strong signal (operating remotely, so no definite signal reading). Copied at least 4 or 5 CW beacons and fixing to go back and decode. Will update on status after packet decode. Jonathan Wagner, KE5FSG

3 2

REMINDER - Dayton Dinner
by MARTHA SARAGOVITZ 23 Apr '07

23 Apr '07

All AMSAT-TAPR banquet tickets will be availabe for pick-up on Friday at the AMSAT booth. 73, Martha - AMSAT Manager

1 0

FO-29 not heard
by Frank Wiesenmeyer 23 Apr '07

23 Apr '07

Dear FO-29 friends: Sadly, I have to report that I heard no sign of our beloved satellite Fuji OSCAR 29 this morning on orbit 52,751 which was in range of my station from 12:03 through 12:12 UTC. I was holding out hope that it would respond to commands from JARL Monday morning to turn on again, but so far that has not happened. I am located in EM59 which is Central Illinois. If anyone has any recent news please share it with us. I have been using the Mode J satellites since the days of OSCAR 8 and FO-20 & FO-29 have been superb satellites that followed the pioneering work of AO-8. Hopefully, there will be another Fuji Oscar Mode J satellite launched in the future. 73 for now, Frank K9CIS

1 0

Forward Message from JARL
by Mineo Wakita 23 Apr '07

23 Apr '07

An analog transponder of a amateur radio satellite "Fuji-3" stops now. We ask for an offer of the information for investigation and restoration of a cause. Orbiting amateur satellite "Fuji-3" (FO-29, 8J1JCS) of JARL performed a consecutive use of regular analog system, but we confirmed the analog transponder which we should have been managing on 21 April 2007 stopped. We apply it to the investigation of a cause in a control station and collect the information and analyze the telemetry before a transponder stops now. And we draw up a command plan toward the future restoration. As for the station having the following information about "Fuji-3", we wish to does an offer of these information in JARL Development Section. -------------------------------------------------------------- CW telemetry data after 07:00(UTC) April 20, 2007 Tranaponder movement situation after 07:00(UTC) April 20, 2007 (CW telemetry is a stop, but a transponder can work.) If there is a phenomenon, in addition, to become reference, please send to us the signal strength or the reception situation. -------------------------------------------------------------- We ask for cooperation of people for restoration of "Fuji-3". An information destination: lab (at) jarl.or.jp Translated by Mineo Wakita, JE9PEL.

1 0