Due to the spectrum reshuffle from switching television to digital broadcasts, a large section of wireless microphones used in houses of worship, clubs, and schools will become illegal to use after Jun 12, 2010.  Specifically microphones that use 698MHz through 806Mhz are what will no longer be allowed. Many of the top-of-the-line microphones can be programmed to use frequencies below 698MHz, but these systems typically are $1000 and above in cost.    Two manufactures are offering trade-in-rebates to help defer the cost of the change.  The biggest problem with this is actually getting the word out to the owners of these systems, since it’s not tracked.   So think about your community who may use them and ask if they are aware of the upcoming change. http://arstechnica.com/tech-policy/news/2010/01/time-for-churches-to-come-to-jesus-on-wireless-mic-legality.ars?utm_source=rss&utm_medium=rss&utm_campaign=rss