Many thanks to SWLing Post contributor, Tom (DF5JL), who writes:
At the end of last year it appeared for the first time: a telemetry transmitter in CW on 7039.60 kHz. It always transmits at the 2nd, 22nd and 42nd minute of every hour. Every day.
Reception reports are available from Germany, the Netherlands, France and Greece. Three numbers and a V are transmitted ten times in succession, as follows:
0522 UTC: 121V
0542 UTC: 121V
0622 UTC: 122V
0722 UTC: 123V
0822 UTC: 125V
0842 UTC: 127V
0902 UTC: 128V
0922 UTC: 129V
During the day the values increase, in the afternoon they decrease. It is assumed that voltage values are transmitted here, i.e. “121V” would correspond to 12.1 volts. You can listen to a recording here:
Thank you, Tom.
Post readers: If you can shed some light on these transmissions, please comment!