[Spooks] 2662.0 kHz

[Christopher Gross]

"Utility World (Hugh Stegman)" wrote:

>
> This is the classic Whale Sound Station.  It usually appears near US Navy or
> Coast Guard frequencies.  Keep listening and you might hear 39-tone
> encrypted voice (sometimes called "ANDVT" although that is the terminal
> unit, not the encryption scheme), and that would be dead giveaway.
>
>  "Whales" are capable of getting several sine waves going at
> once, hence the eerie moaning.  There have been any number of theories for
> the moaning whales aka Radio Free Willy.  The two winners right now are
> pilot tone hunting and feedback in overcompressed links.

I would tend to go with the feedback theory, since I've been able to achieve that
effect
using feedback through an analog delay with a changing delay time. This is hard to
describe in words, but the delay time seems to be making discrete jumps as well as
making smooth sweeps.

I've been able to pick up the signal (as well as some of the Whales stations), but last
night I
couldn't hear it at all.

If I can find a tape using that analog-delay effect I'll post it on my Web site; it may
take a
while to track one down, but these stations don't seem to be going anywhere...

Chris Gross