Hello,
in the last days we observed interference on the narrow band transponder
by unauthorized LORA transmission with a bandwidth of 125kHz and SF8.
There were at least two stations transmitting without any identification/callsign.
All should know the bandplan and rules of operations on QO-100:
the bandwidth of transmissions on the narrow band transponder
must be no wider than 2.7kHz.
Here is a screenshot of such jamming LORA transmissions observed
on July 10th 2024 at 11:35h UTC.
The AMSAT-DL Team has recorded and decoded those
transmissions.
Please refrain from such transmissions and honor the bandplan
and rules which can be found on the AMSAT-DL Website:
QO-100 Bandplan and Operating Guidelines
Thank you very much for your kind cooperation.
Kind regards
Matthias