[amsat-bb] Observations on tracking programs

[Wendy and Terry Osborne]

Hi JoAnne and everyone,

Thanks for that.
Yes I had two entries for AO-91. One with last years keps that I had
selected and one with current keps that I hadn't selected.
Putting the correct entry in fixed the problem and Nova now agrees with
Orbitron.

I usually go outside and catch AO-91 with a hand held  + yagi.
When using Nova, I had to wait about an extra 5 minutes for AOS and LOS was
about 5 minutes later than predicted.
I actually like Nova, just a personal preference really.

73,
Terry Osborne ZL2BAC


-----Original Message----- 
From: JoAnne K9JKM
Sent: Monday, September 03, 2018 1:02 AM
To: 'AMSAT BB'
Subject: Re: [amsat-bb] Observations on tracking programs

> Nova has two algorithms for computing the location of the satellites.  Try
> the other algorithm.

I've noticed a bit of sneakiness tracking AO-91 with Nova. I find I'm 
several minutes off once or twice a year. The main symptom is a weak 
downlink from AO-91 since the antenna is aimed at a spot in the sky which is 
not on time.

What I've found is somehow Nova has 2 or 3 instances of AO-91 in the table 
where you choose the satellites to add to the tracking view. None of the 
other satellites have multiple instances. What I need to do is to select 
each instance of AO-91 and keep only the one that accurately matches the 
other resources you can compare with.

--
73 de JoAnne K9JKM
k9jkm at amsat.org



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