[Lowfer] Navtex QRM 518 kHz

[Steve Ratzlaff]

I have a strong carrier on 517.915 kc, an hour or so past sunset, currently 
0240 utc. I don't know if that would mess with Navtex reception--I rarely 
try that.
Steve
NE Oregon

----- Original Message ----- 
From: "Garry Hess" <k3siw at sbcglobal.net>
To: <lowfer at mailman.qth.net>
Sent: Saturday, February 12, 2011 5:59 PM
Subject: [Lowfer] Navtex QRM 518 kHz


> No one else has commented on the interferer J.B. and I copy on the 518
> kHz Navtex mark frequency (-shift/2). Tonight it's coming in at -66 dBm
> on my SpectraVue waterfall, compared to -90 dBm for $04N, Chesapeake,
> Virginia. This makes decoding impossible. Since J.B. and I are over 300
> miles apart, it would seem this interference is widespread and hindering
> maritime users. So it should be reported to responsible authorities, but
> just who are they? Does any one know? The US Coast Guard site at
> http://www.navcen.uscg.gov/?pageName=NAVTEX lists links for reporting
> problems with GPS, DGPS, etc. but I don't see anything for Navtex.
> URL=http://www.nws.noaa.gov/om/marine/navtex.htm indicates reception (or
> lack of) reports can be sent to marine.weather at noaa.gov but that doesn't
> seem sufficiently urgent.
>
> 73, Garry, K3SIW, EN52ta, Elgin, IL