How is an HD Radio different from a regular FM radio?
HD radios sound better Regular FM radio has the ability to produce high fidelity sound under the right reception conditions. FM frequencies require a line-of-site path between the FM transmitter and the receiver. Hisses, pops, static, and fading occurs because FM signals are reflected from obstructions such as buildings — or from you when you move around the room where your radio is located. HD radio differs by using digital technology. This technology minimizes reception problems and offers freedom from the interference descibed above. Also, digital technology allows stations like WAMU 88.5 to squeeze in additional services, thanks to cutting edge compression technology. HD radios receive more stations than FM radios Several years ago, WAMU 88.5 installed the equipment necessary to broadcast digital signals, in addition to our regular analog signal. Essentially, this allows us to have three signals in the “space” it take for one. On your HD Radio, these three channels are still found
