Stop in for a cup of coffee

halifaxhops said
Where did you hear of a jammer? It would jam theirs also. Marker beacons you can usually hear on a radio, on-off on-off like morse code 24/7

Ran into it a few times when I was in that Comm section in the aviation brigade. It’s usually by airports with runways real close to busy highways. I know there’s one in GA that does. Or at least we were told it does.