When using wireless in an area that is also occupied by HDTV in the same band here is a helpful hint.

Reduce the RF sensitivity of your wireless mic system so that its only trying to pick up what is in the room. This can be done by reducing the antenna gain. There are a few ways to do this.

1) Using directional antennas if you have a very strong signal without your transmitters turned on add a 100 foot of BNC between the antenna and the receiver or DA. If the antennas have a gain switch reduce the antenna gain. Once you get the DTV signal down on the RF meter of the receiver turn on the transmitter and make sure you have a strong signal if so you should not have a problem from this point on.

2) If you have a omni antenna and a booster reduce the gain of the booster to 3db and see what happens to the RF meter on the reciever with your transmitters turned off. if you still have high signal add 100' of BNC or get rid of the signal booster.

The object is to have enough pick-up potential to cover the room by the antennas but not so much reception that you are picking up everything in the area. The more you pick up the more likely your are to have interferance problems. Matching the system gain to the room conditions is the best way to not have interference problems.