While monitoring Windy this morning, I also noticed the station on 4111 I've logged a few times previously that looks like a dasher, although I know Exo has commented on it before and suspects it is some sort of communications signal. Just another bump in the night (or early morning here.
Hi @ChrisSmolinski,
Fascinating, that you were able to snag the rare and elusive 4111.2 signal at 1055 UTC.
At one point the 4114.42 kHz dasher and 4111.2 kHz dasher were logged here, 2030UTC 19SEP2018, seemingly working each other.
One transmitted for several minutes, then stopped abruptly and the other transmitted, then they swapped.
They had different signal strengths and propagation fading characteristics.
The dash length and interval were slightly variable on both signals.
Unusual, to say the least.
At the time of day (near noon) when they were logged here, NVIS-only propagation on 4 MHz was happening around the West Coast of USA.
At the time of your logging, you were also copying Windy, which means that propagation to California was good on 4 MHz.
This may indicate a western North America or eastern Pacific Ocean origin for the signal.
The 4063 kHz to 4438 kHz segment is allocated to Maritime Mobile, but there are a lot of footnotes, including Aviation, in that allocation subheading.