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2. Wireless microphone - Wikipedia

   en.wikipedia.org/wiki/Wireless_microphone

   Singer Cody Simpson using a wireless microphone headset in a 2013 concert in Montreal. A wireless microphone, or cordless microphone, is a microphone without a physical cable connecting it directly to the sound recording or amplifying equipment with which it is associated. Also known as a radio microphone, it has a small, battery-powered radio ...

3. Shure - Wikipedia

   en.wikipedia.org/wiki/Shure

   The PGX digital wireless system transmits 24-bit/48 kHz digital audio and utilizes the 900 MHz frequency band, and is able to operate with up to five systems simultaneously. Like all Shure wireless, it is available with a variety of popular Shure microphone models, or in bodypack configurations for use with lavalier or headset microphones, or ...

4. Squelch - Wikipedia

   en.wikipedia.org/wiki/Squelch

   Squelch. Look up squelch in Wiktionary, the free dictionary. In telecommunications, squelch is a circuit function that acts to suppress the audio (or video) output of a receiver in the absence of a strong input signal. [ 1] Essentially, squelch is a specialized type of noise gate designed to suppress weak signals.

5. 2.4 GHz radio use - Wikipedia

   en.wikipedia.org/wiki/2.4_GHz_radio_use

   Many of the cordless telephones and baby monitors in the United States and Canada use the 2.4 GHz frequency, [ 1] the same frequency at which Wi-Fi standards 802.11b, 802.11g, 802.11n and 802.11ax operate. This can cause a significant decrease in speed, or sometimes the total blocking of the Wi-Fi signal when a conversation on the phone takes ...

6. Wireless microphone licensing - Wikipedia

   en.wikipedia.org/wiki/Wireless_microphone_licensing

   In the UK, use of wireless microphone systems requires a Wireless Telegraphy Act license, except for the license free bands of 173.8–175.0 MHz and 863–865 MHz, sometimes referred to as "Channel 70" (not to be confused with TV Channel 69, which was 854–862 MHz and always required a license from JFMG Ltd [1] although licences are no longer ...

7. Radio-frequency sweep - Wikipedia

   en.wikipedia.org/wiki/Radio-frequency_sweep

   The sweep is generally limited in bandwidth to only the operating bandwidth of the wireless devices. For instance, at American Super Bowl games, audio engineers monitor (sweep) the radio spectrum in real time to make certain that all local wireless microphones are operating at previously agreed-upon and coordinated frequencies. [1]