BOMGE Wireless Microphone,one To Two,all Metal Handheld U-band FM

Wireless microphones are widely used in the entertainment industry, television broadcasting, and public speeches, allowing public speakers, interviewers, performers, and entertainment personnel to freely move while using the microphone without the need to connect cables to the microphone.Wireless microphones usually use or UHF frequency bands since they allow the transmitter to use a small unobtrusive antenna. Cheap units use a fixed frequency but most units allow a choice of several frequency channels, in case of interference on a channel or to allow the use of multiple microphones at the same time. FM modulation is usually used, although some models use digital modulation to prevent unauthorized reception by scanner radio receivers; these operate in the 900 MHz, 2.4 GHz or 6 GHz ISM bands. Some models use antenna diversity (two antennas) to prevent nulls from interrupting transmission as the performer moves around. A few low cost (or specialist) models use infrared light, although these require a direct line of sight between microphone and receiver.