There are a number of rules for successfully installing a true diversity wireless video system in an arena This is a challenging environment.
Most surfaces are reflective, including seats, walls, roof and floor.
Your transmitter and receiver don't offer you any flexibility to change them. The voting circuitry in the receiver rack will operate automatically, selecting and switching to the best signal during the horizontal interval. This leaves you with three items that you can influence to optimize your video. Most people we work with want to eliminate the pointer, and use a fixed omnidirectional rod antenna. In an indoor arena, using a pointer will dramatically improve your video quality.