Nady DKW-1 VHF Wireless Guitar System (Channel A) High-band VHF (170-216 MHz) operation for interference-free performance Full frequency response from 40 -20,000 Hz 250 ft. typical, up to 500 ft. line-of-sight operating range DKW-1receiver with unique vertical space-saving mini portable design and jumbo LED indicators for power ON, transmitter ON and audio peak. Special added circuitry eliminates transmitter ON/OFFpop noise.