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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 ...
DCO-SE (Line Switch 10,000 lines, software enhanced, class features, centrex, etc.) DCO-RLS (Remote Line Switch, controlled by hosts above) RLS 1000 (Pedestal mount cabinet 1000 lines in a subdivision - required multiple T-1's to host) RLS 4000 (Same thing, but 4000 lines) RLS (This has the ability in a host outage to make intra-cabinet calls)
An Auston switch (also known as a photoconductive switch) is an optically gated antenna that is commonly used in the generation and detection of pulsed terahertz radiation. [1] It is named after the physicist David H. Auston who first developed the technology at Bell Labs in the 1960s.
The following is a listing of affiliates for Antenna TV, [1] a classic television network, which was launched on January 1, 2011, by Tribune Broadcasting [2] and is now owned by Nexstar Media Group. [ 3 ]
[g] The Windom antenna is popular because it has all of the advantages of an ordinary dipole, but functions well on almost twice as many shortwave frequencies as an identical sized center-fed dipole. The price for the extra working frequencies is the needed to match a feed impedance 5–7 times higher than the standard 50 Ohm transmitter impedance.
An antenna's impedance is different at different frequencies. An antenna tuner matches a radio with a fixed impedance (typically 50 Ohms for modern transceivers) to the combination of the feedline and the antenna; useful when the impedance seen at the input end of the feedline is unknown, complex, or otherwise different from the transceiver.