Re: [amsat-bb] Lock on Tracking

[Cliff Buttschardt <cbuttsch@xxxxxxxxxx>]

You would not want to have to switch coax in the line that will
eventually do the receiving.  Probably you would want to "skew"
the receive antenna in multiple directions just enough to accomplish
the same function.    Cliff K7RR

Gary Gonnella wrote:
> 
> Or alternately you could have 4 separate feeds spaced around the main feed
> and either have a down converter for each or come up with a switching
> circuit that would sample each in turn the steer the antenna in the
> direction of the strongest signal.
> 
> Gary Gonnella W6RYO
> gary@w6ryo.com
> http://www.w6ryo.com
> 
> > -----Original Message-----
> > From: owner-AMSAT-BB@AMSAT.Org [mailto:owner-AMSAT-BB@AMSAT.Org]On
> > Behalf Of Al Lawler
> > Sent: Wednesday, December 11, 2002 7:18 AM
> > To: Ben
> > Cc: Rod Smallwood; AMSAT-BB
> > Subject: Re: [amsat-bb] Lock on Tracking
> >
> >
> >
> >     You could concievably average the
> > peaks, then try to drive the antennas based
> > on the averaged signal, combined with a bit
> > of AI knowledge of what sort of correction
> > last worked,  but it would probably take
> > a relatively custom  solution for
> > each installation, I'd  imagine
> >
> > (and things like blowing leaves,
> > or varying precipitation intensity
> > would make it exciting to debug... :^)
> >
> >   -al
> >
> >
> >
> > Ben wrote:
> > >
> > > Hi Rod
> > >   I have thought about building a system that would work by
> > using the signal
> > > strength from the satellite as reference than a simple error amplifier
> > > circuit to drive the AZ-El. But this may be very difficult if the signal
> > > from the satellite fluxuates allot. With fast enough circuits
> > and motors, it
> > > seems possible, but it would probably take a good computer programmer to
> > > develop a workable algorithm.
> > > My thoughts
> > > Ben K9BF
> > > ----- Original Message -----
> > > From: "Rod Smallwood" <Rod@sbs293.customer.demon.com>
> > > To: <amsat-bb@AMSAT.Org>
> > > Sent: Wednesday, December 11, 2002 4:16 AM
> > > Subject: [amsat-bb] Lock on Tracking
> > >
> > > > Unless I am much mistaken everybody uses predictive tracking.
> > > > Has anybody had any experience with Radar style tracking
> > > > where the system locks on to the target (ie AO40) and follows
> > > > it?
> > > >
> > > > Rod (G8DGR)
> > > >
> > > >
> > > >
> > > > ----
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> > > >
> > >
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