[amsat-bb] AO7 Mode A
Hello Linear Satellite lovers! do any of the die-hard satellite operators want to work Mode A on AO7? If you want and un-congested satellite pass that will give you good distance and plenty of time on the Bird, then Mode A is the mode/bird to try. Almost any type of an antenna will work, I am personally using a 3 element HyGain 10m monobander for my receive, it is not perfect but it will do the trick, I have managed a contact into the UK with Paul, 2E1EUB on AO7-a and I have also worked a few South American stations as well, Cuba which as frequency restrictions on 432Mhz cannot use AO7-b but they can work Mode A. If anyone is up for a try, I am willing to make a schedule or two. 73 Frank; K4FEG; EM55aj ___ Sent via AMSAT-BB@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
[amsat-bb] phonesat status
I only heard KJ6KRW-1 on this morning's pass 25April over Ohio. Nothing heard from KJ6KRW and KJ6KRW-2. 73, John K8YSE ___ Sent via AMSAT-BB@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
[amsat-bb] TURKSAT-3USAT article + CubeBug-1 April 26 launch
TURKSAT-3USAT should launch Friday 0413 UT, an article has been published by the Turkish TAMSAT / AMSAT-TR group http://amsat-uk.org/2013/04/25/article-on-turksat-3usat-cubesat/ CubeBug-1 with Digipeater also launching Friday http://amsat-uk.org/satellites/cubebug-1/ NEE-01 Pegasus is a CubeSat on the same launch in operates on 910 MHz either HD TV or a FM SSTV/CW/Voice beacon. The 1U CubeSat has an impressive fold-out solar array http://amsat-uk.org/2013/03/14/ecuadorian-tv-cubesats-pass-qualification-tests-in-the-netherlands/ 73 Trevor M5AKA AMSAT-UK website http://amsat-uk.org/ Facebook https://www.facebook.com/pages/AMSAT-UK/208113275898396 Twitter https://twitter.com/AMSAT_UK ___ Sent via AMSAT-BB@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
[amsat-bb] aprs data stamped with date and time
Hi All, In the page 15 of the book “KENWOOD Listen to the future – TH-D72A/E”. It is written: Step 1: Built in Clock APRS data will be stamped with date and time. Therefore, the built-in clock must be set. Since the time acquired via the GPS receiver is UTC, Time Zone must be configured. Can anybody tell me how the APRS data is stamped with date and time in the TH-D72 APRS Packet? Is there a new APRS Mic-Encoder Format that’s include time and date. If not how can I add time and date of the position measurement in the APRS packet? This is very important for me because I try to save the positions of a mobile periodically, and send them when the satellite is in visibility. The simple way is to use the field packet path. Since the communication is via satellite and we don’t need relay or wide… Have you any advise or elegant way to do this? I think it would be a good thing if the APRS Mic-Encoder Format take care of the date and time of position measurement. 73's CN8XS ___ Sent via AMSAT-BB@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
[amsat-bb] FX.25 for satellite communications
Hi, In august 2010 object 09038F ANDE-2 Castor satellite decayed. It was using an experimental 1200 bauds AX.25 packet beacon with Forward Error Corrections : FX.25 frames. http://en.wikipedia.org/wiki/FX.25_Forward_Error_Correction I am interested in doing some experiment with FX.25 and looking for some source code for encoding and decoding FX25. In a message from Mike DK3VN on Google group forum https://groups.google.com/forum/#!msg/fx25/R9gXJUe_NKU/3beFwRP5R8kJ there is a citation of a file called rs_decode_avr2.tar but no link. Stensat page FX.25 on air performance dated 2007 http://eludium.stensat.org/mcguire/projects/FX-25/ has links for files FX-25_enc_03.c and FX-25_extract.c However these are probably alpha or beta versions and are not fully operational. Can someone provide some clues toward more up-to-date FX.25 sources ? 73 de Bernard, f6bvp AMSAT-France past President ___ Sent via AMSAT-BB@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
[amsat-bb] RES: phonesat status
John I have just heard and decoded KJ6KRW and KJ6KRW-2 . 73 PY5LF Luciano Fabricio Curitiba-PR-BR GG54jm -Mensagem original- De: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] Em nome de John Papay Enviada em: quinta-feira, 25 de abril de 2013 13:30 Para: amsat-bb@amsat.org Assunto: [amsat-bb] phonesat status I only heard KJ6KRW-1 on this morning's pass 25April over Ohio. Nothing heard from KJ6KRW and KJ6KRW-2. 73, John K8YSE ___ Sent via AMSAT-BB@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 ___ Sent via AMSAT-BB@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
[amsat-bb] Re: RES: phonesat status
Heard and decoded KJ6KRW-2 over Colorado on pass at 21:28 -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of PY5LF Sent: Thursday, April 25, 2013 4:11 PM To: 'John Papay' Cc: AMSAT-BB@amsat.org Subject: [amsat-bb] RES: phonesat status John I have just heard and decoded KJ6KRW and KJ6KRW-2 . 73 PY5LF Luciano Fabricio Curitiba-PR-BR GG54jm -Mensagem original- De: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] Em nome de John Papay Enviada em: quinta-feira, 25 de abril de 2013 13:30 Para: amsat-bb@amsat.org Assunto: [amsat-bb] phonesat status I only heard KJ6KRW-1 on this morning's pass 25April over Ohio. Nothing heard from KJ6KRW and KJ6KRW-2. 73, John K8YSE ___ Sent via AMSAT-BB@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 ___ Sent via AMSAT-BB@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 ___ Sent via AMSAT-BB@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
[amsat-bb] Decoding picture packets from PhoneSAT
Has anyone been able to view the .webp files created when decoding PhoneSAT picture packets ? The webp viewer and decoder program both report the file to be corrupted. I must be missing something !? Thanks Dave W0DHB ___ Sent via AMSAT-BB@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
[amsat-bb] Re: PhoneSat Request From NPR
Original Message I'm a reporter with NPR who's working on a little story about some cell-phone satellites that were recently launched into space (Curmudgeon mode on!) 1. I tried to get NPR interested in doing a story about the launch of AMSAT-Phase 3D back in 2000. They did not think that a 600 kilogram satellite with a hypergolic propulsion system, built by volunteer labor from a dozen different countries, financed by a multimillion dollar budget contributed in $50 or $100 increments from hams around the world, was worth doing a story about, but let someone put a cell phone in a cubesat and they think that is a big deal. 2. Cell phones are consumer devices, exquisitely engineered for mass production with reasonably high reliability at minimum per unit cost. Consumer electronics is a highly specialized area of engineering, but so is space flight hardware. Using consumer electronic devices in a space flight environment is a misapplication of engineering principles and is destined to be a technological dead-end. The excuse that the satellite is only intended to last for a short time is rather lame, as is the waste of valuable launch vehicle capacity that could be better used by more serious missions. AMSAT has a dedicated team of highly competent engineers who can supply inexpensive computers and radios that are specifically engineered for space flight, yet we still have cubesat groups buying off the shelf HT's and removing them from the plastic case for installation on their cubesat because they just don't know any better. Apparently neither does NASA. 3. AMSAT-UK had two news items in the last bulletin: PhoneSat CubeSats with Ham Radio Payloads Launched and CubeSats with Ham Radio Payloads Deployed referring to the BeeSat and SOMP CubeSats. None of these satellites carry a ham radio transponder. None of them support ham radio communications. The mere fact that a satellite transmits telemetry on ham radio frequencies does not make it a Ham Radio satellite. That term should be reserved for satellites that support the purpose of amateur radio, which is two-way communications between radio amateurs. NASA's own PhoneSat press release says that These satellites were built by NASA civil servants and contractor employees from USRA and SGT. They weren't built by hams, and they don't serve ham radio. The 435 MHz band does belong to the government as the primary user, and we hams will have access to the band only as long as the government remains as the primary user. If Congress orders the band to be auctioned to commercial interests we will lose the use of it for sure. If NASA needs to use it for telemetry downlink because of the ease of licensing, availability of low cost equipment from the ham radio market, and worldwide availability of hams who may be interested in receiving and forwarding their telemetry, then go ahead and use the amateur satellite band. Just don't call it a Ham Radio satellite. (/Curmudgeon mode off) Dan Schultz, N8FGV ___ Sent via AMSAT-BB@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
[amsat-bb] Re: PhoneSat Request From NPR
Hi Daniel, Carmudgeon mode? I prefer to look at it as Truth Be Told mode. Either way, I agree with you wholeheartedly 73, Jeff WB3JFS - Original Message - From: Daniel Schultz n8...@usa.net To: amsat-bb@amsat.org Sent: Thursday, April 25, 2013 9:20 PM Subject: [amsat-bb] Re: PhoneSat Request From NPR Original Message I'm a reporter with NPR who's working on a little story about some cell-phone satellites that were recently launched into space (Curmudgeon mode on!) 1. I tried to get NPR interested in doing a story about the launch of AMSAT-Phase 3D back in 2000. They did not think that a 600 kilogram satellite with a hypergolic propulsion system, built by volunteer labor from a dozen different countries, financed by a multimillion dollar budget contributed in $50 or $100 increments from hams around the world, was worth doing a story about, but let someone put a cell phone in a cubesat and they think that is a big deal. 2. Cell phones are consumer devices, exquisitely engineered for mass production with reasonably high reliability at minimum per unit cost. Consumer electronics is a highly specialized area of engineering, but so is space flight hardware. Using consumer electronic devices in a space flight environment is a misapplication of engineering principles and is destined to be a technological dead-end. The excuse that the satellite is only intended to last for a short time is rather lame, as is the waste of valuable launch vehicle capacity that could be better used by more serious missions. AMSAT has a dedicated team of highly competent engineers who can supply inexpensive computers and radios that are specifically engineered for space flight, yet we still have cubesat groups buying off the shelf HT's and removing them from the plastic case for installation on their cubesat because they just don't know any better. Apparently neither does NASA. 3. AMSAT-UK had two news items in the last bulletin: PhoneSat CubeSats with Ham Radio Payloads Launched and CubeSats with Ham Radio Payloads Deployed referring to the BeeSat and SOMP CubeSats. None of these satellites carry a ham radio transponder. None of them support ham radio communications. The mere fact that a satellite transmits telemetry on ham radio frequencies does not make it a Ham Radio satellite. That term should be reserved for satellites that support the purpose of amateur radio, which is two-way communications between radio amateurs. NASA's own PhoneSat press release says that These satellites were built by NASA civil servants and contractor employees from USRA and SGT. They weren't built by hams, and they don't serve ham radio. The 435 MHz band does belong to the government as the primary user, and we hams will have access to the band only as long as the government remains as the primary user. If Congress orders the band to be auctioned to commercial interests we will lose the use of it for sure. If NASA needs to use it for telemetry downlink because of the ease of licensing, availability of low cost equipment from the ham radio market, and worldwide availability of hams who may be interested in receiving and forwarding their telemetry, then go ahead and use the amateur satellite band. Just don't call it a Ham Radio satellite. (/Curmudgeon mode off) Dan Schultz, N8FGV ___ Sent via AMSAT-BB@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 ___ Sent via AMSAT-BB@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
