Just got the Shure "Guitarist" uhf unit.
My amp makes a loud POP when I turn the belt pack on or off. It POPs regardless if the mute switch is turned on or off. Is this normal??
If you need a wireless system (from any manufacturer) that is pop-free when you turn the transmitter on/off, you must purchase a wireless that has the feature called: tone key squelch. All of Shure's current wireless systems use tone key squelch.
The UT series that you own does not have the tone key squelch feature. Your mute switch only mutes the audio silently when the transmitter is powered on; it has no effect when you power off or power on your transmitter.
So if having no pops from powering on/off your transmitter is critical, you should return the UT Guitarist and look for a wireless system that has the feature: tone key squelch.