Bottom line, the FCC has re-purposed the majority of the 600mhz frequencies for higher speed cell phone data. At some point in the near future, the cellular companies will turn on their towers for this communication on these new frequencies, thus rendering all wireless microphones in these frequencines useless. The hard date for not using any more is July 15, 2020.
Currently, some of the wireless manufactures are still offering rebates on their products. Simply send in your old 600mhz unit with a proof of purchase and a check is heading your way. Price of the rebates vary based on the level wireless purchased.
If you have any questions or concerns about your wireless use, give us a call. We'd be happy to help evaluate your current wireless situation.
Follow this link to get the direct language from the FCC.
https://www.fcc.gov/consumers/guides/operation-wireless-microphones
6-17-19 UPDATE
We have information that T-Mobile is turning on 600mhz transmission in St Louis very soon. This is sooner than we had expected. Better get ready!
Here is a link to excellent replacement wireless units.
https://shivelbinemusic.myshopify.com/collections/wireless-mic-systems