I installed FoxTelem 1.09 on a windows PC. When I launch the application the error message “Could not write spacecraft user properties file. Check permission on run directory or on the file.” Don’t know how to fix this error message. Thanks for guidance.
Frank K6FW
On Nov 30, 2020, at 9:49 PM, Mark Jessop via AMSAT-BB [email protected] wrote:
A related question: When decoding the BPSK telemetry, what audio IF range can it be present in?
In the SatNOGS BPSK demodulator flowgraph, the audio output part of the flowgraph places the signal at a 12 kHz IF. This is necessary for 9k6 BPSK transmissions, and we fixed it at 12 kHz even for 1200 baud BPSK to ensure the signal would remain within the 24 kHz passband (48 kHz sample rate) even if there was a bit of drift at either the ground-station or sat. The audio recordings are currently mainly used with the Funcube telemetry decoder, which is quite happy to decode 1200 baud BPSK at the 12 kHz IF.
An example of such an audio recording, with a 1200 baud BPSK signal at 12 kHz IF is here: https://ia803207.us.archive.org/32/items/satnogs-observation-2403591/satnogs...
Can FoxTelem be configured to accept BPSK at this IF? If so, then it will be possible to use any of the audio recordings from SatNOGS observations, even if a decoder is not developed in time.
73 Mark VK5QI
On Tue, Dec 1, 2020 at 4:01 PM Mark Jessop [email protected] wrote:
Is there a link available to a description of the FOX-1E telemetry format? (modulation, framing, error correction, packet descriptions, etc...)
It would be nice to implement a decoder within SatNOGS, to enable the 300+ ground stations around the world to contribute telemetry...
73 Mark VK5QI
On Tue, Dec 1, 2020 at 1:00 PM Burns Fisher via AMSAT-BB < [email protected]> wrote:
For those of you with Fox-in-a-box telemetry stations (Fun Cube Dongle in a Raspberry Pi with FoxTelem software), FoxTelem 1.09 has been successfully tested on an FIAB.
It is easy to update your FIAB with the new FoxTelem version. Some time ago, I provided the instructions for upgrading to a new FoxTelem release at
http://burnsfisher.com/AMSAT/FoxInABox/Updating%20FoxTelem%20on%20your%20Fox... and they will not have changed significantly other than the version numbers.
In any case, over the next few days, I will update and post the instructions as well as making the new version available on the FIAB SD cards sold in the AMSAT store and (a bit after that) on the free download.
Thanks to Chris for a great new version!
73,
Burns WB1FJ
On Mon, Nov 30, 2020 at 7:32 PM Chris Thompson via AMSAT-BB < [email protected]> wrote:
This release provides several enhancements and needed changes for
RadFxSat,
also known as FOX-1E. This new spacecraft sends 1200bps BPSK telemetry in parallel with a linear transponder. Downloading telemetry and sending it to the server will assist AMSAT and the Radiation tolerance experiments from Vanderbilt
University.
You can download it here: http://amsat.us/FoxTelem/windows/FoxTelem_1.09n3_windows.zip http://amsat.us/FoxTelem/linux/FoxTelem_1.09n3_linux.tar.gz http://amsat.us/FoxTelem/mac/FoxTelem_1.09n3_mac.tar.gz
The following changes are in 1.09 (from 1.08):
- Performance improvements on the telemetry tabs. This uses less CPU
than
1.08.
- Clearer display of historical records on the telemetry tabs for RT,
MAX,
MIN and WOD.
- Bug fixes for Fox-1E decode and display of diagnostic tables, Whole
Orbit
Data, formatting of telemetry
- Ignore extra commas in conversion curve comments
- Allow a single spacecraft to be downloaded from the Fox Server, even
if
FoxTelem stores many spacecraft
- Latest Golf-T layouts for development
- BPSK CRC checksum calculation for GOLF-T
- Another new way to decode and display the mode
- More generic tab layouts to allow future expansion through soft coding
- Throttle the DDE requests when decoder stopped
- Many other bug fixes
See the complete list on github here:
https://github.com/ac2cz/FoxTelem/issues?q=is%3Aclosed+is%3Aissue+milestone%...
-- Chris E. Thompson [email protected] [email protected] _______________________________________________ Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership.
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Sent via [email protected]. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
Sent via [email protected]. 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: https://www.amsat.org/mailman/listinfo/amsat-bb