How about this for a WAG? A submarine surfacing daily for several hours sending out a beacon of some sort. I've never known subs to do that though, as they desire to keep their location private.

I just don't see the need for the military to use an amateur radio frequency, and make themselves conspicuous. They have so many other less listened to frequencies to use. Any high frequency transmission would be a poor, and relatively non-secure substitute for other available options such as VHF, UHF or higher frequencies, often relayed via satellite. Michael

lets not forget that Nuclear subs routinely never surface when on patrol. They use bouys to send transmissions to satellites etc.

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In a rich man's house there is no place to spit but his face.
Diogenes Of Sinope

lets not forget that Nuclear subs routinely never surface when on patrol. They use bouys to send transmissions to satellites etc.

or ULF with a cable/wire laying on the ocean floor...


Lt

After not being heard for 8 days, the 14.320 Mhz signal was back today, from 21:35 Universal Time. I hear it as I type this. It retains the same pattern as before, groups of 37 pulses, the first group in one audio tone, then the second group in the other tone. Pulsates at the rate of 50 per minute (48 actual pulses per minute, due to slight pauses between groups.) The last pulse of each group of 37 is shortened. Each tone group takes 46 seconds to complete. The signal is fairly strong today; up to S. 5 (2 bars). Michael

37 you say? So,
http://en.wikipedia.org/wiki/37_(number)

or, more imporantly,
http://en.wikipedia.org/wiki/73_(number)

73 is a very special number in number theory. Is this significant? No idea. Good luck with your investigation.

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37 you say? So,
http://en.wikipedia.org/wiki/37_(number)

or, more imporantly,
http://en.wikipedia.org/wiki/73_(number)

73 is a very special number in number theory. Is this significant? No idea. Good luck with your investigation.

Thanks for that, James. I don't know the significance of there being 37 pulses in each group in the signal. There might be an implied connection of 37 to 73 in it, though. As I observed, the last pulse in each group is noticeably shortened. Perhaps this is meant to indicate the alternate reading of 36 & 1/2. Multiplied by 2, the number of different tone groups, this yields 73. I find it interesting that 37 is a figurate number, *both* a centered hexagon and (6-pointed) star. Incidentally, the signal can be heard again today, since 23:05 Universal time. I heard it start up very weakly. It has since been gaining strength. Michael

For those of you hearing it, it would be helpful to know where you hear it from. Not asking for exact location. Something like "Northeast Florida" is what I mean.

I tried listening for on about an hour ago via globaltuners.com from Vero Beach, FL, Blount Hill, N.C. and one in Winsconsin. Nothing. Could be because of the antenna on those radios though.

I tried listening for on about an hour ago via globaltuners.com from Vero Beach, FL, Blount Hill, N.C. and one in Winsconsin. Nothing. Could be because of the antenna on those radios though.

The signal not likely to have been audible as late as 03:00 UT, when you indicate you listened. Past experience indicates it can only be heard between 16 hours and 01 hours UT. This is 9 a.m. to 6 p.m., here in Northern California. &&& The signal is very erratic in nature, coming and going within the above hours with no discernible pattern. Reports of non-reception of the signal would need to be tied to successful reception of it elsewhere, at the very same time, in order to, perhaps, tell us something. The signal has been reported at points as widespread as Northern California, New England, Minnesota, and the Bahamas, so its range is extensive. &&& We can test the supposition that the signal is propagated along a normal path. A 20 meter signal can not normally be heard within about 500 miles of the transmitter, except for short range, line-of-sight, or near line-of-sight contacts. If enough reports of its reception, from various locations, can be collected, it might become possible to rule out any transmitter location within the area the signal has been heard. This would raise some interesting questions. Michael

I am hearing the signal on 14.320 MHz as I type this. It reappeared at about 22:37 Universal Time. I urge anyone with access to a shortwave receiver to listen for it, and report any successful receptions here. Thanks. Michael

just need to ask adbt?

how can i Rx the sound?

u zd a shrt wave Rxr, is it lyk SHort Wave lyng Btwn AM & FM?

i am very concernd to know how you heard the sound?

am doing mu b.Tech in Electronics & Communoication Engineering


Justin

Justin; I used an ordinary shortwave receiver, tuned to the 20 meter band frequency of 14.320 MHz. I rarely hear the signal any more, and it is usually very weak, now. The signal was at one time heard throughout North America. I haven't gotten any more reports of anyone receiving it recently. No satisfactory explanation for the signal was ever given. I still listen for it frequently, in hopes that it will return. Michael