Imagine an entertainment industry today without wireless microphone technology? Sennheiser pioneered much that is fundamental to the modern world of sound production. Without multi-channel transmission, signal companding and switchable frequency operation, the production heights scaled by today’s top sound engineers would not be achievable. Musical theatre, televised sports and entertainment spectaculars, and even many opera and drama productions could simply not be performed on such a scale.
Evolution ew 522-p pocket receiver, pocket transmitter and clip-on microphone.
With evolution 500 Series you can enter the world of professional sound production. Built to meet the most demanding professional applications, evolution 500 Series wireless microphones represent Sennheiser quality at its best, combined with the rugged performance required to support today’s challenging sound touring and production applications.
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Low power radio mics and other cordless audio equipment may be operated in the band 863.000MHz – 865.000MHz, with a maximum power of 10mW Handheld, 50mW Body worn. For most sets of equipment, with a 200kHz bandwidth, the lowest frequency will be 863.100MHz, and the highest, 864.900MHz.

Licensing
No licence is required. Use may be made of licence exempt equipment free of charge without reference to JFMG. ( JFMG Limited issues licences for Radio Mics)