From: Jim Friedman NBC 10, Philadelphia, Pa
When you need that audio of cockpit chit-chat and you can’t plug in to their system, try this. Take the passenger headset and remove the earmuff pad from one side of the headset. Place your lav mic head between the foam and the speaker. Tape the lav head to the speaker. Put the padded ring back on to the headset. Press both earmuffs together and wrap gaff tape around the headset to squeeze it together. I never had a problem with this method plus the pilot will be glad when you don’t have to “tamper” with his comm system.