just a guess, but if they are using the transmissions for super bowl, they may not want to transmit long distances at all as the service is available to those that buy a ticket:
a licensed broadcasting company providing in stadium play by play to the crowds in the stadium, parking areas and the ever growing tailgate party areas.
an opportunity to hear play by play action in the stadium using one of the companies private labeled radios complete with state of the art ear piece.
Sports Radio Broadcast has a selective list of prolific sports casters, and allows those who purchase tickets to NFL
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