Gentlemen,
These are not normal times, we are seriously short of satellites and without satellites we don't have a hobby anymore. Without new and more satellites users we probably won't have a hobby anymore either.
Time for creative thinking.
FM on VO-52 might just be something we have to do.
Send as much money as you can afford to the Fox project
73 John g7hia
Sent from my iPad
Don't even think about it! It is EXTREMELY bad practice using FM on a linear transponder. It may consume more than 10 times the bandwidt of SSB/CW.
You do have a hobby. Adapt to the situation. Learn something new. Extend your capabilities. SSB/CW and doppler correction are the state of the art.
That is what ham radio should be.
Cheers Edgar
Am 03.12.2011 07:53, schrieb John Heath:
Gentlemen,
These are not normal times, we are seriously short of satellites and without satellites we don't have a hobby anymore. Without new and more satellites users we probably won't have a hobby anymore either.
Time for creative thinking.
FM on VO-52 might just be something we have to do.
Send as much money as you can afford to the Fox project
73 John g7hia
Sent from my iPad _______________________________________________ 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
At 03:38 AM 12/3/2011, you wrote:
Don't even think about it! It is EXTREMELY bad practice using FM on a linear transponder. It may consume more than 10 times the bandwidt of SSB/CW.
Not to mention the resource (battery power) that FM needs.
John, W0JAB
Hi Edgar, DF2MZ
Well sayd ! I agree with you
73" de
i8CVS Domenico
----- Original Message ----- From: "DF2MZ" Edgar.Kaiser@t-online.de To: amsat-bb@amsat.org Sent: Saturday, December 03, 2011 10:38 AM Subject: [amsat-bb] Re: VO-52 FM Operation
Don't even think about it! It is EXTREMELY bad practice using FM on a linear transponder. It may consume more than 10 times the bandwidt of SSB/CW.
You do have a hobby. Adapt to the situation. Learn something new. Extend your capabilities. SSB/CW and doppler correction are the state of the art.
That is what ham radio should be.
Cheers Edgar
Am 03.12.2011 07:53, schrieb John Heath:
Gentlemen,
These are not normal times, we are seriously short of satellites and
without satellites we don't have a hobby anymore. Without new and more satellites users we probably won't have a hobby anymore either.
Time for creative thinking.
FM on VO-52 might just be something we have to do.
Send as much money as you can afford to the Fox project
73 John g7hia
Sent from my iPad _______________________________________________ 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
While I understand the motives of AMSAT-India in experimenting with FM on a linear transponder to provide an avenue for FM only equiped VU hams to get on the sats, I have significant concerns that it will be counterproductive to satellite operator growth in the long run. While the FM-sats are good intros to satellite operation, it has been hard to move the FM-sat ops on to linear or digital sats. As much fun as the FM-sats are, they only offer a glimpse of what amateur satellite operation is capable of.
Making a linear sat available for FM operation offers removes the incentive with that satellite to move up to linear birds and even fewer FM-sat operators will progress. It will also remove opportunities for the linear sats to show what they are capable of. It is unlikely that FM can coexist with CW and SSB on a satellite passband. Reallocating the available satellite transponders from linear to FM seems to me to redistribute bandwidth in the wrong direction, that is assigning a bandwidth that is available to many operators at a time to one that is only available to one at a time. This redistribution of bandwidth is counterproductive, contrary to the good spectrum management, and in some sense confiscatory.
I guess that this is an OK temporary solution over VU, but I fear that if it moves worldwide, it will send a very negative message to those who effectively and efficiently use the linear sats.
We need to seriously look at alternate entry methods to linear satellite operation. For years Mode A operation served this purpose. Perhaps we should reexamination that avenue for getting ops on linear sats as an alternate to putting more FM cross band repeaters in orbit.- Duffey KK6MC -- James Duffey KK6MC DM65tc Cedar Crest NM < jamesduffey@comcast.net >
participants (5)
-
DF2MZ -
i8cvs -
James Duffey -
John Becker -
John Heath