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Re: where all the users



----- Original Message ----- 
From: "Edward Cole" <kl7uw@acsalaska.net>
To: "Dave Guimont" <dguimon1@san.rr.com>; "Joe" <nss@mwt.net>
Cc: <amsat-bb@amsat.org>
Sent: Saturday, July 19, 2008 3:28 PM
Subject: [amsat-bb] Re: where all the users

> At 08:25 PM 7/18/2008, Dave Guimont wrote:
> 
> > >Yes puters do make it easyier,  but not tottally absolutely necessary.
> > >
> > >in the old days we tracked the birds using  something called math,
> > >
> > >Made little paper things with  clear plastic overlays to simulate the
> > >birds path across the sky,
> > >
> > >Doppler?  uhhhh,  we tristed the vfo to keep it in tune,
> > >
> > >geeech,
> > >
> > >Joe WB9SBD
> >
> >Joe,
> >
> >I had exactly the same thoughts, but hesitated to say it for fear the
> >one who made the comment would not understand "twisting a knob"!!!
> >
> >
> >
> >
> >
> >             73, Dave, WB6LLO
> >                 dguimon1@san.rr.com
> >
> >                     Disagree: I learn....
> >
> >                Pulling for P3E...
> 
> Yeah, maybe on 435-MHz but try doing that at 1268 or 2400 on the 
> Leos!  Not very easy/practical.  One hand tunes the uplink, other 
> moves azimuth, third the elevation, and fourth keys the mic...fifth 
> keeps the log...uhuh.
> 
> I find operating ordinary old mode-B or mode-J hard enough and think 
> auto-tracking (at least) is made for the Leos.  For AO-10/13/40 its 
> non-issue, of course, Doppler rates and tracking rates are lower.
> 
> Ed - KL7UW


Hi Ed, KL7UW

In conlusion you are saying that a LEO FM satellite like AO-51 when
working  at 1268 or 2400 MHz is not suitable for beginners for newcomers
and for the students because the operation requires a lot of money to
compensate for doppler and traking and for a suitable tranceiver for the
above frequencies..............and I agree with you because the mode L/S on
AO40 was more economical and easier to do with no automatic antenna
traking and only manual tuning twisting a knob.

73" de

i8CVS Domenico



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