Hi
Did anyone see the Soyuz launch from Arianespace a few days ago and think how nice it would be to have an amateur radio satellite somewhere above LEO ?
Interestingly, the launch of 3 communication satellites providing internet services to remote areas, was to an altitude around 8000km. - An unusual destination. Apparently the 'latency' or time delay on signals from 36,000km is too high for an internet service, whereas the number of satellites needed for a constellation at LEO is too many.
The company O3B (Other 3 Billion) decided that MEO at 8000km which is between the 2 Van Allen belts answered their needs.
http://spaceflightnow.com/2014/12/18/soyuzo3b-launch-timeline/
For the launch, the satellites were mounted on a cylindrical launch adaptor, (see pics in link) the inner part of which looks an ideal place for a 3U cubesat secondary payload.
Wouldn't it be nice to get something up to that altitude with Omni antennas, or a gravity gradient boom with a simple beam and about 4 Watts output ! A leisurely 5 orbits a day with Paris to California routine......... http://g0mrf.com/MEOSAT.htm
Oh well, back to dreaming of a white Christmas
Seasons greetings
David G0MRF
Could anyone get pricing for this, please?
Jerry Buxton, NØJY
On 12/22/2014 08:37, David G0MRF wrote:
Hi
Did anyone see the Soyuz launch from Arianespace a few days ago and think how nice it would be to have an amateur radio satellite somewhere above LEO ?
Interestingly, the launch of 3 communication satellites providing internet services to remote areas, was to an altitude around 8000km. - An unusual destination. Apparently the 'latency' or time delay on signals from 36,000km is too high for an internet service, whereas the number of satellites needed for a constellation at LEO is too many.
The company O3B (Other 3 Billion) decided that MEO at 8000km which is between the 2 Van Allen belts answered their needs.
http://spaceflightnow.com/2014/12/18/soyuzo3b-launch-timeline/
For the launch, the satellites were mounted on a cylindrical launch adaptor, (see pics in link) the inner part of which looks an ideal place for a 3U cubesat secondary payload.
Wouldn't it be nice to get something up to that altitude with Omni antennas, or a gravity gradient boom with a simple beam and about 4 Watts output ! A leisurely 5 orbits a day with Paris to California routine......... http://g0mrf.com/MEOSAT.htm
Oh well, back to dreaming of a white Christmas
Seasons greetings
David G0MRF
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
O3B had to buy the capacity of two GTO capable rockets to get to their custom orbit of 8,000 km, don't know what that costs these days but I don't reckon you'll get much change out $100 million. The cheaper approach might to go to a 600 km orbit and use an onboard electrical propulsion system to steadily increase the apogee over 2 or 3 years - but unfortunately no-one has achieved that yet.
But yes 8,000 km would be a great orbit for amateur satellites and if it used the 29 and 50 MHz bands you'd hardly notice the Doppler.
73 Trevor M5AKA
On Monday, 22 December 2014, 20:02, Jerry Buxton amsat@n0jy.org wrote:
Could anyone get pricing for this, please?
Jerry Buxton, NØJY
On 12/22/2014 08:37, David G0MRF wrote:
Hi
Did anyone see the Soyuz launch from Arianespace a few days ago and think how nice it would be to have an amateur radio satellite somewhere above LEO ?
Interestingly, the launch of 3 communication satellites providing internet services to remote areas, was to an altitude around 8000km. - An unusual destination. Apparently the 'latency' or time delay on signals from 36,000km is too high for an internet service, whereas the number of satellites needed for a constellation at LEO is too many.
The company O3B (Other 3 Billion) decided that MEO at 8000km which is between the 2 Van Allen belts answered their needs.
http://spaceflightnow.com/2014/12/18/soyuzo3b-launch-timeline/
For the launch, the satellites were mounted on a cylindrical launch adaptor, (see pics in link) the inner part of which looks an ideal place for a 3U cubesat secondary payload.
Wouldn't it be nice to get something up to that altitude with Omni antennas, or a gravity gradient boom with a simple beam and about 4 Watts output ! A leisurely 5 orbits a day with Paris to California routine......... http://g0mrf.com/MEOSAT.htm
Oh well, back to dreaming of a white Christmas
Seasons greetings
David G0MRF
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. 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. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
Launches to GTO currently run form 90 million to about 120 million, depending on the launch provider.
73, Jim KQ6EA
On 12/22/2014 08:42 PM, M5AKA wrote:
O3B had to buy the capacity of two GTO capable rockets to get to their custom orbit of 8,000 km, don't know what that costs these days but I don't reckon you'll get much change out $100 million. The cheaper approach might to go to a 600 km orbit and use an onboard electrical propulsion system to steadily increase the apogee over 2 or 3 years - but unfortunately no-one has achieved that yet.
But yes 8,000 km would be a great orbit for amateur satellites and if it used the 29 and 50 MHz bands you'd hardly notice the Doppler.
73 Trevor M5AKA
On Monday, 22 December 2014, 20:02, Jerry Buxton <amsat@n0jy.org> wrote:Could anyone get pricing for this, please?
Jerry Buxton, NØJY
On 12/22/2014 08:37, David G0MRF wrote:
Hi
Did anyone see the Soyuz launch from Arianespace a few days ago and think how nice it would be to have an amateur radio satellite somewhere above LEO ?
Interestingly, the launch of 3 communication satellites providing internet services to remote areas, was to an altitude around 8000km. - An unusual destination. Apparently the 'latency' or time delay on signals from 36,000km is too high for an internet service, whereas the number of satellites needed for a constellation at LEO is too many.
The company O3B (Other 3 Billion) decided that MEO at 8000km which is between the 2 Van Allen belts answered their needs.
http://spaceflightnow.com/2014/12/18/soyuzo3b-launch-timeline/
For the launch, the satellites were mounted on a cylindrical launch adaptor, (see pics in link) the inner part of which looks an ideal place for a 3U cubesat secondary payload.
Wouldn't it be nice to get something up to that altitude with Omni antennas, or a gravity gradient boom with a simple beam and about 4 Watts output ! A leisurely 5 orbits a day with Paris to California routine......... http://g0mrf.com/MEOSAT.htm
Oh well, back to dreaming of a white Christmas
Seasons greetings
David G0MRF
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. 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. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. 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. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
Would be nice. Internet CAN work in geo-synchronous orbit. That is how I access the internet. 650 - 900 msec latency (based on ping data), but doesn't really matter. VOIP might be entertaining, but it can be handled. Anybody who's used a satellite phone knows about and the adjustment isn't that hard.
73, Jim wb4gcs@amsat.org
On 12/22/2014 3:01 PM, Jerry Buxton wrote:
Could anyone get pricing for this, please?
Jerry Buxton, NØJY
On 12/22/2014 08:37, David G0MRF wrote:
Hi
Did anyone see the Soyuz launch from Arianespace a few days ago and think how nice it would be to have an amateur radio satellite somewhere above LEO ?
Interestingly, the launch of 3 communication satellites providing internet services to remote areas, was to an altitude around 8000km.
- An unusual destination.
Apparently the 'latency' or time delay on signals from 36,000km is too high for an internet service, whereas the number of satellites needed for a constellation at LEO is too many.
The company O3B (Other 3 Billion) decided that MEO at 8000km which is between the 2 Van Allen belts answered their needs.
http://spaceflightnow.com/2014/12/18/soyuzo3b-launch-timeline/
For the launch, the satellites were mounted on a cylindrical launch adaptor, (see pics in link) the inner part of which looks an ideal place for a 3U cubesat secondary payload.
Wouldn't it be nice to get something up to that altitude with Omni antennas, or a gravity gradient boom with a simple beam and about 4 Watts output ! A leisurely 5 orbits a day with Paris to California routine......... http://g0mrf.com/MEOSAT.htm
Oh well, back to dreaming of a white Christmas
Seasons greetings
David G0MRF
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. 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. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
--- This email has been checked for viruses by Avast antivirus software. http://www.avast.com
Jim,
About like working through AO-40 around apolgee. :)
73s,
Alan WA4SCA
<-----Original Message----- <From: amsat-bb-bounces@amsat.org [mailto:amsat-bb-bounces@amsat.org] On Behalf Of Jim Sanford <Sent: Monday, December 22, 2014 2:57 PM <To: amsat-bb@amsat.org <Subject: Re: [amsat-bb] I'm dreaming of a Medium Earth Orbit....... < <Would be nice. <Internet CAN work in geo-synchronous orbit. That is how I access the <internet. 650 - 900 msec latency (based on ping data), but doesn't <really matter. VOIP might be entertaining, but it can be handled. <Anybody who's used a satellite phone knows about and the adjustment <isn't that hard. < <73, <Jim <wb4gcs@amsat.org < <On 12/22/2014 3:01 PM, Jerry Buxton wrote: <> Could anyone get pricing for this, please? <> <> Jerry Buxton, NØJY <> <> On 12/22/2014 08:37, David G0MRF wrote: <>> Hi <>> <>> Did anyone see the Soyuz launch from Arianespace a few days ago and <>> think how nice it would be to have an amateur radio satellite <>> somewhere above LEO ? <>> <>> Interestingly, the launch of 3 communication satellites providing <>> internet services to remote areas, was to an altitude around 8000km. <>> - An unusual destination. <>> Apparently the 'latency' or time delay on signals from 36,000km is <>> too high for an internet service, whereas the number of satellites <>> needed for a constellation at LEO is too many. <>> <>> The company O3B (Other 3 Billion) decided that MEO at 8000km which <>> is between the 2 Van Allen belts answered their needs. <>> <>> <>> http://spaceflightnow.com/2014/12/18/soyuzo3b-launch-timeline/ <>> <>> For the launch, the satellites were mounted on a cylindrical launch <>> adaptor, (see pics in link) the inner part of which looks an ideal <>> place for a 3U cubesat secondary payload. <>> <>> Wouldn't it be nice to get something up to that altitude with Omni <>> antennas, or a gravity gradient boom with a simple beam and about 4 <>> Watts output ! <>> A leisurely 5 orbits a day with Paris to California routine......... <>> http://g0mrf.com/MEOSAT.htm <>> <>> Oh well, back to dreaming of a white Christmas <>> <>> Seasons greetings <>> <>> David G0MRF <>> <>> <>> <>> _______________________________________________ <>> Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available <>> to all interested persons worldwide without requiring membership. <>> Opinions expressed <>> are solely those of the author, and do not reflect the official views <>> of AMSAT-NA. <>> 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. AMSAT-NA makes this open forum available <> to all interested persons worldwide without requiring membership. <> Opinions expressed <> are solely those of the author, and do not reflect the official views <> of AMSAT-NA. <> Not an AMSAT-NA member? Join now to support the amateur satellite <> program! <> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb <> < < <--- <This email has been checked for viruses by Avast antivirus software. <http://www.avast.com < <_______________________________________________ <Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available <to all interested persons worldwide without requiring membership. Opinions expressed <are solely those of the author, and do not reflect the official views of AMSAT-NA. <Not an AMSAT-NA member? Join now to support the amateur satellite program! <Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
participants (6)
-
Alan -
David G0MRF -
Jerry Buxton -
Jim Jerzycke -
Jim Sanford -
M5AKA