Search results
Results from the WOW.Com Content Network
All PA systems have the potential for audio feedback, which occurs when a microphone picks up sound from the speakers, which is re-amplified and sent through the speakers again. It often sounds like a loud high-pitched squeal or screech, and can occur when the volume of the system is turned up too high.
The speaker(s) connected to the center channel are placed in the center of and behind the perforated projection screen, to give the effect that sounds from the center channel are coming from the screen. In many home surround sound units, the center channel is positioned above or below the video screen. [1]
The Pan-American television frequencies are different for terrestrial and cable television systems. Terrestrial television channels are divided into two bands: the VHF band which comprises channels 2 through 13 and occupies frequencies between 54 and 216 MHz, and the UHF band, which comprises channels 14 through 36 and occupies frequencies between 470 and 608 MHz.
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
A short antenna pole next to a house Multiple Yagi TV aerials. Antennas are commonly placed on rooftops and sometimes in attics. Placing an antenna indoors significantly attenuates the level of the available signal. [19] [20] Directional antennas must be pointed at the transmitter they are receiving; in most cases great accuracy is not needed ...
The satellite receiver or set-top box demodulates and converts the signals to the desired form (outputs for television, audio, data, etc.). [17] Often, the receiver includes the capability to selectively unscramble or decrypt the received signal to provide premium services to some subscribers; the receiver is then called an integrated receiver ...
Area served City of license VC RF Callsign Network Notes Allentown: Philadelphia: 35 9 WPPT: PBS: World on 35.2 : Allentown: 39 9 WLVT-TV: PBS: Create on 39.2, France 24 on 39.3 : Allentown ...
As the WNEP-TV analog broadcast tower collapsed on December 16, 2007, one of the falling guy wires supporting the WNEP-TV tower damaged the neighboring tower broadcasting WVIA-TV (analog and digital) and WVIA-FM by shearing off the top section of the WVIA tower supporting the antenna for the analog and digital TV signals. The antenna for WVIA ...