The set used to work in the theater and has been replaced to new models. Note from the Federal Communications Commission about operation of these units inside the United States.
Under FCC rules, anyone who uses a wireless microphone (or similar device) that operates in the 700 MHz Band must have stopped operating their wireless microphone (or similar device) by June 12, 2010. All users of 700 MHz Band wireless microphones (and similar devices) - including theaters, churches, schools, conference centers, theme parks and musicians needed to retune or replace, if necessary, their equipment by June 12, 2010. Wireless Microphones that operate outside of the 700 MHz Band are not affected. If you are in a metro area, this could be more of an issue.
Possible but still technically illegal use out in the middle of nowhere, in a metal building, where no signal is radiated outside of the users property will be at buyers risk and responsibility of checking all legal issues. The FCC prohibits the operation of wireless microphones and similar devices e. Wireless intercoms, wireless in-ear monitors, wireless audio instrument links, and wireless cuing equipment in the 700 MHz band, i.
The item "Shure UHF U4D-UA SM87 Wireless Dual 782-806 MHz set used" is in sale since Friday, April 08, 2016. This item is in the category "Musical Instruments & Gear\Pro Audio Equipment\Microphones". The seller is "rightlightny" and is located in Brooklyn, New York.This item can be shipped worldwide.