Keps are the Keplarian elements that define a satellite’s orbit and are used to predict its location. You have to update these every few days (daily for ISS, which reboots its orbit from time to time). You trigger the update manually, using the Update Keps button, and specify the update source for the keps — the nasabare keps from AMSAT are a good choice (they include AO-85).
The sqf file contains information that defines the operational modes of a satellite (frequencies, tones, modulation, and so on). This info gets entered once when the satellite is new. It might need to change if the frequency drifts with age or if a new satellite isn’t operating as expected, but generally remains fixed. You edit this file with a text editor.
Dave, W8AAS
On Dec 19, 2018, at 8:11 PM, Ted Krempa k7trkradio@charter.net wrote:
Thank you....it sounds like I have a misunderstanding about keps vs sql....I'll read up on that
Thank you, again
73, Ted K7TRK
-----Original Message----- From: Stephen E. Belter [mailto:seb@wintek.com] Sent: Wednesday, December 19, 2018 4:54 PM To: Bob Cc: Ted Krempa; AMSAT-BB Subject: Re: [amsat-bb] FW: Doppler file
Ted,
There is a window that allows you to download and update the Keps. Any changes to the sqf files for new satellites or modes are performed by you manually.
73, Steve N9IP
Steve Belter, seb@wintek.com
On Dec 19, 2018, at 7:00 PM, Bob WB4SON@gmail.com wrote:
Hi Ted,
As nice as it would seem, it really isn't possible to automatically update the DOPPLER.SQF file. The most important reason is that each station has a different transmit and receive offset due to different RX and TX chain frequency calibration, drift, etc. It would be possible to have a baseline SQF file (without compensation) and a few hams do publish that.
You can manually update the Kep files yourself.
73, Bob, WB4SON
On Wed, Dec 19, 2018 at 6:36 PM Ted Krempa k7trkradio@charter.net wrote:
Hello, can anyone else answer my question below.....(Joanne must be busy)
Thanks, Ted K7TRK
-----Original Message----- From: AMSAT-BB [mailto:amsat-bb-bounces@amsat.org] On Behalf Of Ted Krempa Sent: Monday, December 17, 2018 3:49 PM To: 'JoAnne Maenpaa'; 'Dave' Cc: amsat-bb@amsat.org Subject: Re: [amsat-bb] Dobbler file
Good stuff, Joanne...thanks
One thing, though, that I have never understood, however: Does SatPC32 properly update keps and the sqf data when the 'update' option is used in the program? Or do we need to keep updating manually. I can understand with a new sat, manually trying to find the right data, but after the sats are rolling along for a few weeks the normal sites that identify keps usually have that data current.
Thanks for any input
73, Ted K7TRK
-----Original Message----- From: AMSAT-BB [mailto:amsat-bb-bounces@amsat.org] On Behalf Of JoAnne Maenpaa Sent: Monday, December 17, 2018 5:54 AM To: 'Dave' Cc: amsat-bb@amsat.org Subject: Re: [amsat-bb] Dobbler file
Perhaps these messages from the amsat-bb from a few weeks ago might offer a starting point?
https://www.amsat.org/pipermail/amsat-bb/2018-October/069839.html https://www.amsat.org/pipermail/amsat-bb/2018-November/070451.html
-- 73 de JoAnne K9JKM k9jkm@amsat.org
-----Original Message----- From: AMSAT-BB [mailto:amsat-bb-bounces@amsat.org] On Behalf Of Dave Sent: Monday, December 17, 2018 7:40 AM To: James McIrvin Cc: amsat-bb@amsat.org Subject: Re: [amsat-bb] Dobbler file
I’m not sure if you received a private response but I have a similar
issue.
I tried to use SatPC32 the other day and found many of the satellite frequencies were not correct. I’m going to have manually edit a bunch of them unless I can find someone with a good set of files.
Dave N2OA
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Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb