[GreenKeys] signal near 3.781 mhz

[n9vmo at comcast.net]

 -------------- Original message ----------------------
From: <eugene at hertzmail.com>
> I've heard the same signal. Curious because it is in the ham bands and
> therefore must be decipherable, yet I haven't been successful. 


Not necessarily so.  

I remember many a time in the USAF where we were given operating freqs. in the ham bands for our TTY ops and everything that we sent was encrypted.