Observation 5055359: DIY 1 (47963)

Satellites & Observations Observations
1

Hi,

Scott, the owner of this station (2134) , is running gr-satellite for DIY-1 for report to the dashboard, but apparently it is it does not work . I was able to decode the frames using the WAV file generated by the station. What can be wrong @EA4GPZ , @DL4PD ?

Regards.

Gustavo.

Regarding Observation 5055359 …

2

Hmm, hard to know. Maybe something about the way he’s running gr-satellites in-line with the decoder (more specifically, the way samples are being sent to gr-satellites), since decoding in post-processing with the WAV does work.

Perhaps the --dump_path option of gr-satellites is useful to debug this.

1 Like
3

Thanks Daniel, I put in copy @satcolintel5 who is running the decoder, for watch what can be wrong.

Regards.

1 Like
4

Thank for posting this Daniel, I was meaning to start a thread after investigating without any clear answer as to how to fix this.

The satnogs-gr_satellites process starts without error for DIY-1, it creates a log file but without any decoding. Satnogs-gr_satellites seems to be working for other satellites so I’m not why it seems particular (so far) to DIY-1.

Log for satnogs_gr_satellites log for that observation 5055359 (grsat_5055359.log):

(env) goes@goes:/data/satnogs$ more grsat_5055359.log
gr::log :DEBUG: correlate_access_code_tag_bb0 - Access code: 2dd4
gr::log :DEBUG: correlate_access_code_tag_bb0 - Mask: ffff
gr::log :DEBUG: correlate_access_code_tag_bb0 - writing tag at sample 78952
gr::log :DEBUG: correlate_access_code_tag_bb0 - writing tag at sample 132313
gr::log :DEBUG: correlate_access_code_tag_bb0 - writing tag at sample 202198
gr::log :DEBUG: correlate_access_code_tag_bb0 - writing tag at sample 219343

From /var/log/syslog

Nov 25 10:18:54 goes satnogs-client[25774]: gr-satellites: Observation: 5055359, Norad: 47963, Name: DIY-1_ARDUIQUBE, Script: satnogs_fm.py
Nov 25 10:18:54 goes satnogs-client[25774]: gr-satellites: Starting observation 5055359
Nov 25 10:26:41 goes satnogs-client[25774]: gr-satellites: Observation: 5055359, Norad: 47963, Name: DIY-1_ARDUIQUBE, Script: satnogs_fm.py
Nov 25 10:26:41 goes satnogs-client[25774]: gr-satellites: Stopping observation 5055359

I’ll add the flag --dump_path as @ea4gpz suggests going forward. The pre/post scripts are set via satnogs-setup as per the satnogs-gr_satellites installation instructions.

hxxps://github.com/kng/satnogs_gr-satellites/blob/main/INSTALL.md (URL defanged because I don’t like the way it was displaying in this post)

SATNOGS_PRE_OBSERVATION_SCRIPT = /usr/local/bin/satnogs-pre {{ID}} {{FREQ}} {{TLE}} {{TIMESTAMP}} {{BAUD}} {{SCRIPT_NAME}}
SATNOGS_POST_OBSERVATION_SCRIPT = /usr/local/bin/satnogs-post {{ID}} {{FREQ}} {{TLE}} {{TIMESTAMP}} {{BAUD}} {{SCRIPT_NAME}}
UDP_DUMP_HOST = 127.0.0.1