Regarding Observation 1737767 (among other observations), it seems Argus-02’s transmission frequency may have shifter down 10-20kHz. We are unsure as to why, but we have seen Argus-02’s pattern on this slightly lower frequency consistently. Would it be possible to add a transmitter on this frequency to see if. Argus-02 is better captured?
For context, Argus-02 transmits telemetry every 45s, which fits the pattern.
I can not say for sure that the visible signal is from Argus-02, it seems that it doesn’t fit any TLE of the deployment, event if I drift the frequency.
To be honest I haven’t checked all the observations until now but I’m on it. We will need more observations with signals and from more stations to be sure.
I did a few days ago! I’m still waiting on it to be accepted
I’ve seen this suggestion, however I haven’t managed to check the observations for confirming it and accept the change.
It will be very helpful if you can list here all the observations that show signal of Argus-02 that matches the interval of 45sec and are at -10KHz - -20KHz from the announced frequency.
We believe most of the following passes contain Argus-02:
(Yes, patterns vary but all fit behaviors that are possible for Argus-02)
02/22 13:42:47 1740876
02/22 10:37:28 1737768
02/22 10:29:23 1740711 very faint but consistent 30s intervals
02/22 10:15:26 1740658
02/22 05:44:49 1737767
02/22 05:40:44 1732237
02/22 05:40:38 1732318
02/22 04:06:48 1737766
02/21 20:38:21 1726625 OBC off?
02/21 06:33:15 1733193
02/21 04:54:26 1733192
02/20 21:26:03 1726619 OBC off?
02/20 08:52:37 1720946 very faint
02/20 07:15:38 1720958 strong pattern!
02/20 07:15:20 1720917
02/20 07:15:16 1721048 very faint
02/20 05:41:51 1720956 feasible pattern
02/20 05:41:00 1721049 long pattern
02/20 05:40:53 1721025 long pattern
02/20 05:40:46 1721037 long pattern
02/20 04:06:34 1720954 long pattern
The signal at right-center is 43466 - 1KUNS-PF and the CW at left is 32785 - CUTE-1.7+APD II
The signal at right-center is 43466 - 1KUNS-PF
The signal at the right is AZTECHSAT-1 and the faint signal at left is a terrestrial one.
The signal at the right is AZTECHSAT-1, the signal on the left is either noise or terrestrial signal. For example in this observation the noise/terrestrial signal is more visible SatNOGS Network - Observation 1751567.
Again as the previous observation from this station the signal at the right is AZTECHSAT-1 and the one faint at left is a terrestrial one.
At the right is AZTECHSAT-1 and at the left/center the noise/terrestrial signal, again in station #6 as in the previous. Here is more obvious that the noise/signal follows the terrestrial noise line starting from -10KHz at the bottom.
I can not see any signal
Again signal at the right is AZTECHSAT-1
Again the noise/terrestrial signal on #6
The signal at the right is AZTECHSAT-1
Signal at right is AZTECHSAT-1. The other horizontal lines are noise, you can see something similar in the other observations of this station, like this one.
One more time the noise/terrestrial signal on #6
I can not see something on this.