[Lowfer] TACAMO 17.8 kHz et al

[Laurence KL7 L]

I turned up the video gain on SPec lab and sure enough I can see the Tacamo @17.8 but it was within a dB or so of the noise and not clear with my normal settings...  - Ill leave the gain up for a while - it looks like we may have had another flare around 1900Z or so. I see NML has been playing with a different mode too
 
http://kl7l.com/fast00000.jpg
 
Laurence KL7 L et al
 

> To: lowfer at mailman.qth.net
> Date: Tue, 11 Mar 2014 08:12:59 -0800
> Subject: Re: [Lowfer] TACAMO 17.8 kHz et al
> 
> Just a few brighter pixels from Bob XBA/1 last night but could have been an infinite number of monkeys. NAA peaked about 4dB lower with about the same level of noise floor as 24 hours earlier.
> 
> 
> Herea 90sec per sample wideband view using the L400b from here in Alaska - and NAA still isn't a huge signal here. Not seen a lot of Tacamo over the past 24 hours on anything I can see..
> 
> http://kl7l.com/Wideband11thMarch14.jpg
> 
> 
> Laurence KL7 L WH2XBA/5 etc
> 
> 
> 
> 
> 
> 
> In regard to the latest message "29.499 tonight OP2H starts 2330..." 
> from Jack, WA9FVP,
> 
> I and others participating on this list are quite familiar with TACAMO 
> (http://en.wikipedia.org/wiki/TACAMO) and the frequencies where it often 
> appears. It does not transmit long, normally just a few minutes. It 
> normally begins with 50 Baud RTTY, then switches to very wide band MSK, 
> then less wide MSK. People on this list are also familiar with the 24/7 
> military transmitters like NAA on 24 kHz. Jay, W1VD has an extensive 
> list of currently active VLF sources at http://www.w1vd.com/vlf.html. 
> You can also get a feel for who you're hearing by searching "other" and 
> frequencies below 100 kHz at 
> http://www.classaxe.com/dx/ndb/rna/signal_list (the European listings 
> are even more extensive).
> 
> -- 
> 73, Garry, K3SIW, EN52ta, Elgin, IL
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