suggestions for wireless camera transmitters and receiver

Hi all -

Broadcasting some sports and other live events in outdoor settings, using Panasonic P2s and Sony HD cameras.

I would love some suggestions for mid-range priced wireless transmitters for the cameras that would send back to receivers in a small broadcast truck.

We are hard-wiring all the cameras right now, and I would love to have at least one roaming on wireless.

We also have a Chyron unit in the truck that uses an aircard for Internet.
Would the wireless signal interfere with this or vice versa?

Thanks in advance

CKS