Correct Lee,  if some have not heard them they need to check the receive antennas and
plan for work in the spring.
They were especially loud out here in KH6 back in 2008 etc when conditions over the pole were excellent,  they boomed in before and at sunrise peaks. Occasionally via LP at sunset
coming in over central/south America.
73 Merv K9FD/KH6

    Mike and others,
    Those signals are NOT fishnet beacons. They are as one here said a version of a 
navigation system similar to Hyperfix. The reason you hear three "dings"
Is that there are three transmitters for each one that transmit in sequence and 
the electronics aboard ship measures the time of arrival for each pulse 
providing harbor navigation.
   How do I know this, I have heard them from the NW  here in OR many times and 
looked them up years ago. There have been at least two discussions about this 
here on top-band reflector over the years. And as mentioned they NEVER ID. They 
are also low power.
Mike I would suggest you Google Hyperfix.
    Lee   K7TJR  OR

-----Original Message-----
From: Topband [] On Behalf Of Mike Waters
Sent: Monday, February 19, 2018 5:09 PM
Subject: Re: Topband: Conditions on 160m for ARRL Contest

Google *fishnet beacons *and educate yourself, gentlemen! :-)

73, Mike
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