This  is sattrack for the psion version V970327

what is changed in this version
-------------------------------

the calculation formulas are still the same but about 12Kb of new code
has been written for this release.

When you start the software it's first loading the  selected Kepler set and  
then a menu will pop-up.  
 
from there you can make a selection 

1) realtime  
2) print for Max 11 sat the next a.o.s times 
3) print for 1 sat oas/max/los   (for xx hours)
4) manual tracking of 1 sat for xx hours with xx seconds interfall
5) setup of your qth parameters
6) quit exit this program

if you press the menu button while in menu (1-4)  you will 
see a new menu.

(quit) bring you back at the main menu 
(exit) will abort the program 
(alarm) give you the possibility to set a attention beep for 1 or more
        bird's  if they come above the horizon and have los (realtime mode)
              
(rotor) this part is not working only the menu and input functions
        has been written  in a next  release  it should be  possible
        to use the psion as tracking computer using a  (amsat dl interface)           
        connected to the psion serial link cable :-)  
           
a few  tips 
-----------
If you got a ??:??:?? printed as time 
this is a indication that the calculated sattelite is on the air now!!  
the printed El and Az are than for the current time.

In oas-max-los mode The default  step size is 20 sec 
this will mean that while the bird is above the 0 deg  every 20 sec a new
calculation is  made (to find the max and los parameters )

For low orbits birds this is oke but for high orbits birds this can 
take to much time.  Change  this parameter if you calculate high orbit birds.
 
I build a watchdog in the software that will prevent a loop while doing
calulations,  same sat's  are never in range at my location.

The  value of this watchdog duration  timer can be set from 1 to 100 hours
the default value is  24hour) You can set  this  to 1 hour to get a fast review
which bird's have an aos within the next hour.

A small FAQ
----------- 

Were can i register this software.
----------------------------------
Registration is not needed the software is freeware 
but we like feedback so send a msg if you use the software.

I changed the kepler sets and now i got a subscript or dimention error
----------------------------------------------------------------------
Then there is an error in the kepler set. 
look if the format is correct, the files must be written into ascii (text)
format. If you use the psion word editor to edit the file you must save  
the files using  save as (Psion a) and then  change normal into text type) !!

Where can i download the last version
-------------------------------------
The last version of this software can be found at the amsat archive on
ftp.amsat.org 

Is this version working on a psion 3C
-------------------------------------
I downloaded the 3C pc emulator 
and i didn't see problems but i didn't try it on a real 3c (didn't have one..).

How to contact us
-----------------
See start-up screen for details.

thinks todo
----------

1) write the  output to a file or print.
2) finish rotor control amsat dl interface type.
3) write same parts of the software in c to get a faster program.

Egon pa3edn 

