Did a ULS FCC search and there are NO 'licensed' GMRS (ZA) or current Business transmitters in Brown, Outagamie, Shawano or Oconto counties on that frequency.
Second harmonic upband would be 925.250 which is Cable TV channel # 146. (???)
No, I don't know what that would be. Perhaps just someone who setup a GMRS repeater and put in some random letters for the code id? Start talking on it and see who shows up