[RFI] 40 Meter OTH Radar?

KD7JYK DM09 kd7jyk at earthlink.net
Sun Dec 13 23:32:13 EST 2015

On a whim I spun the dial and I hear several OTHR signals from about 
6900-7000 at 0420Z.  I'm also hearing what sounds like a cricket chirp on 
6870 and 6880 and a couple other places around there.  There is also 
continuous STANAG on 6910, with another "cricket" on 6920 and more STANAG on 
6980 which is usually confused with OTHR and can run up to hours as a time. 
A radio issue prevents me from tuning in better than 10 KHz increments, so 
the readings aren't exact, but good enough for what I'm describing.

Can someone listen to these "crickets" and tell me what you think.  I've 
never heard this before.  Oddly, it sounds nearly identical to a wireless 
keyboard on 27.145 MHz, but I can assure you, there is no such device 
anywhere near where I am at this time.


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