[amsat-bb] Re: satellite average elevation

[Glen Zook]

Somewhere I still have an "OSCAR locator".  That is why several locals came up with a computer program to run on a mainframe to calculate the elevation and compile a set of tables.  MUCH easier!

Glen, K9STH

Website:  http://k9sth.com


--- On Tue, 4/12/11, i8cvs <domenico.i8cvs at tin.it> wrote:

> From: i8cvs <domenico.i8cvs at tin.it>
> Subject: Re: [amsat-bb] Re: satellite average elevation
> To: "Glen Zook" <gzook at yahoo.com>, "Amsat - BBs" <amsat-bb at amsat.org>, "Bob Bruninga" <bruninga at usna.edu>
> Date: Tuesday, April 12, 2011, 10:32 PM
> ----- Original Message -----
> From: "Glen Zook" <gzook at yahoo.com>
> To: <amsat-bb at amsat.org>;
> "Bob Bruninga" <bruninga at usna.edu>
> Sent: Tuesday, April 12, 2011 10:39 PM
> Subject: [amsat-bb] Re: satellite average elevation
> 
> Again, back in "those dayes" we did not have the luxury of
> computer
> simulation and from trial and error the majority of people
> found that about
> 30 degrees above the horizontal worked the best.  That
> is why the "olde
> tymers" recommend 30 degrees.  It worked very well and
> we made many contacts
> using the LEO satellites.
> 
> Glen, K9STH
> 
> Hi Glen, K9STH
> 
> In those days of OSCAR-6 we did not have the luxury of a PC
> but we used the
> OSCARLOCATOR.By the way for best performance on OSCAR-6
> ,OSCAR-7
> and OSCAR-8 an elevation motor was required and the most
> popular for
> elevation was a KR-500 allowing manual elevation traking
> and flipping when
> necessary.
> 
> A 30 degrees elevation for the antennas was seldom used
> with OSCAR-6 ,7 and
> 8 resulting in marginal performance.
> 
> With the actual LEO satellites like VO-52 , AO-51 and FO-29
> the altitude is
> much lower and according to Bob Bruniga demonstration a
> fixed elevation of
> 15 to 20 degrees seems to be a good compromise but
> obviously using an
> elevation motor is much better.
> 
> 73" de
> 
> i8CVS Domenico
> 
>