[FedCom] Re: 138.925

[Bryan Herbert]

Its telemetry, likely a controller for an irrigation system (golf 
course, lawns, park) or alarm system to monitor multiple zones at a 
control station or while mobile.

gfdubois at juno.com wrote:
> Speaking of weird signals, I could use some help with one.
>
> There has been a digital signal on 138.925 coming from the ANG base at
> Portland International for decades now.
> According to the IRAC database, it is a fixed station transmitting with
> ten watts. I always assumed it had 
> something to do with a/c navigation, but I don't think so. For one, we
> have gone through three different aircraft in the
> last 30 years, and it's still there. And we have a TOD generator, on
> 397.0. 
> The "Special Notes" code is S361, which means "multiple transmitting
> and/or receiving stations operating at fixed locations..."  But
> everything the ANG owns is at Portland Arpt. (Or Klamath Falls, in
> southern Oregon.) And the signal is always the same strength.
>
> If you listen to it, it transmits at irregular intervals.
>   http://mywebsite.mysite.com/files.html
> (There's another one on 139.875 that's been there for the last ten years
> or so. I have no idea what that one is either.)
>
> Anyone have any ideas? 
> (Not guesses. Any AF vets in the group?)
>
> Thanks.
>
> George DuBois
>
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