[Lowfer] Navtex QRM 518 kHz-more

[David L. Wilson]

I did not see a spoke last night but was having terrible copy during the
short time I listened.    The Ap index is curently 8 with the sun being very
active with the first X-class flare in years?.  But I may just being having
a multipath problem.  One station has now (Tue. 1230 UTC) been transmitting
since I got up (a lonlong g time).  I do not know who it is (since I did not
get start time of good enough copy) but I just copy jibberish.  I was going
to wait for the station to go away but he seems to never be finished and I
have to get to go out.  Turns out I should b....oops .  Station stopped at
1241 UTC and then he or someone else came up--again unable to copy.
Frequency was silent between transmission.  Perhaps someone with a problem
testing? 

--
David L. Wilson
dwilson314 at verizon.net


> -----Original Message-----
> From: lowfer-bounces at mailman.qth.net [mailto:lowfer-
> bounces at mailman.qth.net] On Behalf Of Garry Hess
> Sent: Tuesday, February 15, 2011 12:10 AM
> To: lowfer at mailman.qth.net >> lowfer list
> Subject: Re: [Lowfer] Navtex QRM 518 kHz-more
> 
> Todd and David,
> 
> I'm not certain the problem has been fixed. I'm seeing a spike on the
space
> frequency right now that's strong enough to mess up decode of $04E,
> Savannah, GA, a very strong night time signal. It's possible this is just
the
> result of two big stations sending at the same time (heaven knows the 10
> minute transmit windows aren't generally adhered to), but the spectrum I
> see looks more like one correct Navtex signal and a very strong bogus line
at
> the space frequency. I saw similar behavior briefly earlier in the evening
too.
> 
> A technician replacing a part after two or more days of failure on a
> life/property service isn't acceptable, nor is the lack of a clear way to
report
> problems. How can the service people not know when their transmitter is
> transmitting and when it's truly off?
> 
> 73, Garry, K3SIW, EN52ta, Elgin, IL
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