How to choke puck mount?

[Alabama Buckeye]

I've no idea why you'd choke a mobile radio. You say you're not running power; therefore your pacemaker is not apt to be disturbed by any RFI in the cab. Not knowing what length of coax is being used, again I can't fathom why a choke is deemed necessary in a mobile. Of course there are exceptions; your 1/4 λ antenna is puck (magnet) mounted at the tail of your 53' trailer then another 18' to your cab mounted radio you've a mighty long radiating antenna, your coax. There really isn't a minimum length to coax; yes, some will argue. If a choke is absolutely deemed necessary, by you, choke it at the radio.

I put air chokes (fugly baluns) on all my base station antennas. Keeps the neighbors happy and with near 25' x3 coax lengths inside the shack I don't hear any ring tones, or visions of goblins.