Radio microphones (or wireless microphones) are microphones that are not directly tethered to any audio recording equipment, for instance a sound recorder or video camera.

They are more commonly know as radio mics or wireless mics, where the original audio cable is replaced by frequency transmitting technology. Radio microphones have the ability now to transmit sound digitally, or via radio frequencies such as FM, AM, UHF and VHF.

Better, more advanced radio mics give you the option to change which frequency you are on, enabling both the usage of multiple microphones, and eliminating the possibility of interference.

It is believed that the primary radio microphones derived from the original compander microphone invented in 1976 by Nady Systems, who was recognised in 1996 with an Emmy award for his technical achievement in the field. 

Radio Microphones - Plus Points
Using radio microphones is very advantageous for the user. Firstly, on a practical basis you eliminate any trailing cables which can and do cause potential trip hazards. Secondly, the result is that the wearer of the microphone can move freely as they are untethered. Another plus point is that you no longer stress any cables by flexing them, which can frequently result in damage.

Negative Points of Radio Microphones
Though there are many plus points, there are also a few negatives to using radio microphones. For a start, two way radio batteries can drain a lot of power very quickly so don't always run for very long. Radio mics, depending on how expensive the system, are also range limited. Interference from another electrical appliance is also a possibility which would lead to a disruption of the signal. Lastly, you are limited to the number of radio microphones you can use at the same time due to frequency clashing.

For more information please visit Radio Microphones.

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