[Lowfer] TACAMO 17.8 kHz et al

[Garry Hess]

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