One recent afternoon (April 2nd, around 2330 UTC), I was
sitting on my second floor patio, and scanning the shortwave
bands on my Tecsun PL-380, with a 15 foot wire attached to
the whip antenna. I came upon what sounded like the usual
Cuban spy numbers, but this time on 17540 khz, where I don't
normally hear them, certainly not at this hour. No big deal,
as I hear presumed cuban numbers stations all the time, but
this time there were less numbers being read, and the sets of
numbers were interrupted by data bursts/modem sounds. This
was actually not the first time I've come across these voice/
data spy transmissions, but I'll admit I only started hearing
these particular ones within the last 3-4 weeks. This time, I
decided to finally get off my ass and make a recording. Click
below to listen and/or download.
https://www.box.com/s/ueptz8b3gx9ov1p9dxze
A journal dedicated primarily to shortwave radio broadcasting and DXing. Based in Fort Worth, Texas, USA.
This one is known as HM01, and the data you are hearing is RDFT. 17540 is a normal frequency for it.
ReplyDeleteMore information: http://www.qsl.net/py4zbz/eni.htm