Hello!
So I am ATCing at KSAN (Still ATCing, come by :) ) and this one military aicraft from KNZY contacts San Diego ground and asks for pushback. I approve it and realize that the fighter jet is not in my airport… So I say “Stand By” and after a minute of thinking I just send “Frequency Change Approved, Good Day.”. They don’t respond and switch to tower frequency where they request takeoff. I didn’t reply this time…
So my question is: what to do when someone’s on the wrong frequency? Unfortunately, You cannot request for someone to change into unicom frequency, or say “Wrong Frequency, please switch to [name of their airport] unicom.”.