[Lowfer] 518 kHz Navtex

[Garry]

I monitored 518 kHz Navtex over night from NE IL. Big storms made for 
noisy conditions but plenty of decodes came through anyway, including 
one from Puerto Rico. I didn't notice anything around 518.6 kHz where 
interference has been reported but did see a weak waterfall indication 
of something wide band on the mark frequency. There is a Canadian HD 
radio station that has a wide, flat spectrum that can impact Navtex 
reception here but it was under the noise last night. The attachment 
shows a transmission from area 4 station A at 0810Z.

73, Garry, K3SIW, EN52ta, Elgin, IL
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