this signal is being heard all across the eastern part of North America
and there are reports from at least as far west as Montana. I can hear
it during the day but at a very low level. Night time levels are much
stronger.
cheers, Graham ve3gtc FN25ig near Ottawa Canada
On 2014-12-07 19:09, Bob Camp wrote:
Hi
120 Hz sub structure suggests a (much lower power) switching power supply run
amok. I certainly would not design a system that would have virtually no
immunity to power line noise …..
Bob
On Dec 7, 2014, at 6:28 PM, Tim Shoppa <tsho...@gmail.com> 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
Tim N3QE
_______________________________________________
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
_______________________________________________
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
_______________________________________________
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
