Shure UA820H4 1/2 Wave Omnidirectional Antenna for UR4S+, UR4D+ Receivers, (518-578 MHz)

hi I'm Stuart and welcome back to Shaw's whiteboard sessions today we're going to be looking at antenna selection and placement like microphones antennas are transducers converting energy from one form to another so in the case of transmitting antennas for any monitoring systems were converting current into electromagnetic waves and for your wireless microphone systems we're doing the reverse we're taking those electromagnetic waves and converting them into current the size of an antenna is related to its wavelength so for VHF systems from say 172 to 16 megahertz you're looking at a wavelength of approximately 1.5 meters but in the UHF range from 470 to 790 megahertz say the wavelength shrinks right down to maybe about half a meter design of antennas also determines the performance so depending on the actual design you can add features like directionality increased forward gain and limi