Try doing a search of that band in SSB mode and see what you get.  I
didn't hear any  coms on that until I happened to be searching in FM, and
then moved to AM and then SSB after reading the messages here, and things
being so distorted I figured it either was encryption or S SB.





On Mon, 25 Oct 2004, Martin McCormick wrote:

>         I have never heard any voice on 220-222 MHZ in North-Central
> Oklahoma, but I do hear continuous data transmissions that have
> occasional CW ID's.  I think these are what they call SCADA systems.
> That stands for Supervisory, Control And Data Acquisition.  Not
> terribly exciting to listen to.  All of these signals are faint, here,
> but get a little louder when the band opens up.
>
>         I have no idea where they are coming from except that they are
> not local.  I am 50 miles North of Oklahoma City, about 70 Miles
> Southwest of Tulsa and about 120 miles south of Wichita.
>
>         SCADA systems are used anywhere one has lots of remote
> monitoring such as oil pipe lines, electric power distribution
> systems, water treatment plants and so forth.
>
> Martin McCormick WB5AGZ  Stillwater, OK
> OSU Information Technology Division Network Operations Group
>