Anyone have a good source for a wireless transmitter/receiver package. We have been using an off the shelf set for one of our products at work from Linear Corp. This one is similar to a really old garage door opener technology. We have been having problems with range and interference problems and I am thinking of maybe doing our own in house design or moving to a different off the shelf product. The set we get now is like $100 for the pair and my searches have been hsowing alot more expensive sets. It has to be radio not infrared.