[Lowfer] VLF ... VTX3 on 18.2 kHz

jrusgrove at comcast.net jrusgrove at comcast.net
Sat May 12 06:32:25 EDT 2012


VLF enthusiasts

Been seeing/hearing an FSK signal on 18.2 kHz (QRN condx permitting) the past few weeks. 18.2 kHz 
has been an 'open' frequency on my list of station received ( http://www.w1vd.com/vlf.html ). Time 
of day, a bit of VTX research and a look at the WWLLN lightning network spectrograms ( 
http://webflash.ess.washington.edu/spectra.html ) in that area of the world (Beijing, Honolulu, 
Suva, Osaka, Brisbane and Perth) lead me to believe that this is VTX3 in India. Additionally, VTX2 
17.0 kHz and VTX4 19.2 kHz are not on the air. Corroboration from others would be appreciated.

Jay W1VD  WD2XNS  WE2XGR/2

p.s. frequency is definately not 18.2 kHz as I'm using SpecLab's sampling rate calibration feature.

 



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