338.950 and uniden 15x

I am currently receiving 338.950 open signal. The Uniden close call caught it and has it as fm, the pro 106's say am, even the 197 says am. 4 scanners have this signal at 5 bars, 1 pro 106 with extended RS antenna has 3 bars. It sounds like it is on the move.. Losing signal on the pro 106's, uniden still shows 5 bars..