I saw this signal at about 0045 UTC, but in the chat it was said these pulses had been on for some time. Pulse was 0.500 sec long and every 4.0 seconds. Last pulse was at 0143:15 UTC.
I looked for other freqs that might have the same signal, thinking it might be part of the Pips network, but no joy, I found no other freqs in use. Because the signal strength was much stronger than I typically receive Pips, and because no other freqs were found, I think this was a different signal.
I also heard this on several European remotes, so pretty decent signal.
T!