When in the stadium area using a full size rubber duck is a problem for my 250 and 396 due to RF de-sense from the 800Mhz band transmitters down there and you will likely get sporadic traffic at best.
Use a small stub antenna or no antenna.
As for showing "courtroom cam" for 7th inning stretch, sounds fun but we don't have a court at The Park. Just a door out to the PPD Van or car.
At the Linc, If you could get someone to sponsor it (Court cam brought to you by Quick bail bonds of Phila)

)
Gotta make money off it to get screen time.
Dave
(Audio operator at both places)