Recorded last night. Audio bandwidth is a few kHz, but as mentioned before the signal is about 20 kHz wide.
https://www.dropbox.com/s/bnp8zcpgw86l6ww/1910.wav?dl=0 This morning (14:21 UTC) nothing is heard Frits W1FVB Whitefield, NH On 12/8/14, John C. Westmoreland, P.E. <j...@westmorelandengineering.com> wrote: > Hello, > > Can someone please post a *.wav file of what it sounds like provided you > have an SDR set-up? > > If you need someplace to post - please send the file to me offlist and I'll > put it on either an ftp site or http. > > I am not so convinced what I saw wasn't noise or some stations from China > transmitting - which I have seen in the 160m band lately. > I got an AM band tonight also that was stomping all over ~ 3.87 MHz. > > Thanks! > John > AJ6BC > > > On Mon, Dec 8, 2014 at 2:30 AM, Graham <planoph...@aei.ca> wrote: > >> Radiolocation may be a bit misleading. >> >> Some first thought that this was CODAR but it is not, at least not what I >> am familiar with but it may be another variation of an ocean surface wave >> RADAR type of system but it is certainly not like one I have heard >> before. >> >> cheers, Graham ve3gtc >> >> >> On 2014-12-07 20:03, paul swed wrote: >> >>> Not aware of any testing plus it makes no sense these days. LORAN long >>> ago >>> abandoned and was in that range and Loran C in the US dead. UrsaNav has >>> been quite for quite a while. >>> Regards >>> Paul >>> WB8TSL >>> >>> On Sun, Dec 7, 2014 at 7:09 PM, Bob Camp <kb...@n1k.org> 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. >>> >> >> _______________________________________________ >> 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. > -- vbradio.wordpress.com _______________________________________________ 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.