Some information on the observation and creation:

Remote system running Spyserver with a RTL-SDR v3

SDR++ on Debian Linux connected to the remote spyserver
 Sample rate 2.048e6 and 4 times decimation.
 recording a baseband wav file with sdr++

This created the following file:

soxi eirsat-1_baseband_437100000Hz_22-03-38_01-12-2023.wav 

Input File     : 'eirsat-1_baseband_437100000Hz_22-03-38_01-12-2023.wav'
Channels       : 2
Sample Rate    : 512000
Precision      : 16-bit
Duration       : 00:12:32.42 = 385239040 samples ~ 56431.5 CDDA sectors
File Size      : 1.54G
Bit Rate       : 16.4M
Sample Encoding: 16-bit Signed Integer PCM

Replaying this file doesn't provide successfull decodes despite the strong
signals in the observation.