Speco MUHF101 UHF 700 Frequency-Selectable Single Channel True Diversity PLL Receiver

single channel receiver, handheld and lapel microphone 
transmitters allow the user to select and match desired 
frequencies on each unit. This eliminates the need to 
maintain high inventory levels of similar units with 
locked frequencies. They provide clear, interference-free 
channels of communication for roaming distances in 
excess of 150 feet.

Up to 700 selectable pre-programmed frequencies make 
  it easy to set up multiple system configurations and 
  avoid interference
Auto-scan function can locate interference-free channels easily
True Diversity technology ensures quality reception
Constructed from durable plastic with a ½ rack design
Squelch adjustment
Balanced XLR connector and unbalanced ¼ jack audio output
FCC, CE, RoHS compliant