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Ambiguity about whether the 47 USC 301 charge was applicable since the transmitter had a license resulted in the passage of 18 U.S.C. § 1367 which made satellite jamming a felony. MacDougall was able to perform the intrusion while working a second job as a master control operator at a satellite teleport in Florida, where he worked to make ends ...
The collapse destroyed the tower, KLTV's analog and digital antennas, KLTV's digital transmitter, and FM station KVNE's antenna. The analog transmitter was undamaged, and within a few days was moved to KLTV's backup tower in east Tyler. The collapse occurred the day after Raycom Media officially took ownership of the station. WALB-TV Mast ...
In radio communication, multipath is the propagation phenomenon that results in radio signals reaching the receiving antenna by two or more paths. Causes of multipath include atmospheric ducting, ionospheric reflection and refraction, and reflection from water bodies and terrestrial objects such as mountains and buildings.
The transmitter and receiver can use fixed tables of frequency-hopping patterns, so that once synchronized they can maintain communication by following the table. In the US, FCC part 15 on unlicensed spread spectrum systems in the 902–928 MHz and 2.4 GHz bands permits more power than is allowed for non-spread-spectrum systems.
The rise of FM radio and television broadcasting in the 1940s–1950s created a need for even taller masts. The earlier AM broadcasting used LF and MF bands, where radio waves propagate as ground waves which follow the contour of the Earth. The ground-hugging waves allowed the signals to travel beyond the horizon, out to hundreds of kilometers.
After transmitter problems knocked WQSV off the air, the Staunton radio station is back up and running. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800-290 ...
On the receiver side, frequency drift was mainly a problem in early tuners, particularly for analog dial tuning, and especially on FM, which exhibits a capture effect. However, the use of a phase-locked loop (PLL) essentially eliminates the drift issue. For transmitters, a numerically controlled oscillator (NCO) also does not have problems with ...
A cleaning company has been fined $171,000 after federal investigators found 11 children working a "dangerous" overnight shift at a meat processing plant in Iowa. The U.S. Labor Department sa id ...