80*24 = 1920. 80th harmonic seems quite a stretch unless there is some malfunction (as you point out maybe an interaction with 60Hz heating... hmm... maybe they thought they could use PWM on the heating circuit.). For sure they have enough power and enough wire in the air to do the damage being observed.
Do you know what the "normal" 24kHz waveform looks like? (FSK, MSK?) Some of the locals think it is iceland and that is pretty much the same beam heading as Cutler Maine. OK "beam" is a little optimistic,but we do have directional antennas for 160M and we do know which way is NE :-) Tim N3QE On Mon, Dec 8, 2014 at 9:15 AM, Brian Inglis < [email protected]> wrote: > On 2014-12-07 16:28, Tim Shoppa wrote: > >> Would any time-nuts know of radiolocation-type testing going on, on east >> coast of US, maybe around Maine? There is a very strong wideband signal on >> 1900-1920kHz, with a 120Hz substructure and a 4Hz rep-rate, likely >> megawatt >> power range. >> >> Sound sample (recorded with 2400Hz receiver bandwidth, although the whole >> signal is far far wider bandwidth) at >> http://www.trailing-edge.com/1910-intruder.wav >> >> Pics of the waveform at http://www.trailing-edge.com/1910-intruder-1.png >> and >> zoomed in at http://www.trailing-edge.com/1910-intruder-2.png >> > > Could it be an artifact of interference with NAA 1-1.8MW@24kHz > which also uses ~3MW@60Hz for deicing on the inactive array, > as it is now below freezing and fairly humid in coastal Maine > http://en.wikipedia.org/wiki/VLF_Transmitter_Cutler > > -- > Take care. Thanks, Brian Inglis > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
