They are licensed under their KGJ746 call sign and it is licensed as a base station. It is only licensed for the Marion (county home road ) tower and I have it listed in one of my old lists (1999)Heard some radio techs dropping a tone on 154.265, 151.235, and 158.850. After the tone the techs could be heard whistling, saying "test", ect. . .
BTW, did Linn county ever use 158.850?
You could have been hearing Chickasaw County. They are two counties North of Black Hawk.Tuesday 8/17 I was in CR-------- I heard the repeater key up and a 2-3 second solid tone followed by unkey then key up with an open carrier for 3-4 seconds. This happened maybe 3 times in 4 minutes...........then went dead.
I was in Waterloo a couple weeks ago and heard voice on the frequency.............it was not local ducted maybe!
I couldn't catch were the activity was but it was LEO traffic.