RWM time signal, Moscow, Russia being heard on 14996.0 kHz CW. Signal S4 ~ S7.
13:18 UTC - 1 Hz pulses standard time intervals;
13:20 UTC - 10 Hz pulses standard time intervals;
13:30 UTC - unmodulated carrier;
13:38 UTC - transmitter off;
13:39 UTC - CW ID: RWM;
13:40 UTC - 1 Hz pulses;
13:50 UTC - 10 Hz pulses;
14:00 UTC - unmodlated carrier; signal starting to fade;
14:08 UTC - transmitter off;
14:09 UTC - CW ID: RWM;
14:10 UTC - 1 Hz pulses;
14:20 UTC - 10 Hz pulses;
14:30 UTC - unmodulated carrier; signal level now S3 ~ S5 but still good and readable;
14:38 UTC - transmitter off;
14:39 UTC - CW ID: RWM;
14:40 UTC - 1 Hz pulses;
15:00 UTC - standard time intervals continue; signal level now S2 ~ S4 and still readable;
15:20 UTC - standard time intervals continue; signal level now S2 ~ S3, continuing to fade but still readable;
16:00 UTC - standard time intervals continue; signal level steady at S2 ~ S3;
16:45 UTC - standard time intervals continue; signal level continues to fade and is now barely above the noise floor and poor;
17:00 UTC - transmission is barely audible;
17:20 UTC - transmission is unusable.
Further details available from the RWM Wikipedia page:
https://en.wikipedia.org/wiki/RWM
RSPduo | Barker & Williamson, end-fed longwire and Wellbrooke loop antennae | Toronto, Ontario Canada