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Unlocking Frequency & Volume on Shure ULX Wireless Microphone Receiver

I knew Shure transmitters could be frequency locked, causing quite a bit of stress if you don't know how to unlock, but apparently the receivers can also be locked for both frequency & volume. Hopefully someone won't do this to you as a joke, but here's how to unlock. The graphic shown is from the Shure manual and is a little hard to read, but it's hold the SET button while turning left, right, left. If the level flashes on the LCD, decrease the level control to continue.