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Moreover, for a given noise power spectral density (PSD), spread-spectrum systems require the same amount of energy per bit before spreading as narrowband systems and therefore the same amount of power if the bitrate before spreading is the same, but since the signal power is spread over a large bandwidth, the signal PSD is much lower — often ...
Released in the 1910s, this vintage camera was known for its focal plane shutter and large format capabilities. It was mostly used by press photographers; the 1942-1953 Pulitzer Prizes for ...
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. Both FHSS and direct-sequence spread-spectrum (DSSS) systems can transmit at 1 watt, a thousandfold increase from the 1 milliwatt limit on non-spread-spectrum systems.
Although known for manufacturing their film projectors, a partnership with Canon between 1961 and 1976 offered still cameras. Many of their 35mm SLR cameras were manufactured by Canon with the Bell & Howell logo or Bell & Howell/Canon in place of the Canon branding. The firm dropped the production of movie cameras by the end of the 1970s.
1935 model Mitchell NC Camera Mitchell Standard 35mm camera - The original Mitchell rackover pin-registered studio camera, introduced in 1920 as a hand-cranked silent film camera. The rackover device allowed the camera portion with its side-mounted viewfinder to be "racked over" upon its base by turning a handle on the rear of the camera base.
WSFJ-TV (channel 51) is a television station licensed to London, Ohio, United States, broadcasting the Ion Television network to the Columbus area. Owned and operated by the Ion Media subsidiary of the E. W. Scripps Company, the station maintains studios on North Central Drive in Lewis Center, Ohio.
Direct-sequence spread-spectrum transmissions multiply the symbol sequence being transmitted with a spreading sequence that has a higher rate than the original message rate. Usually, sequences are chosen such that the resulting spectrum is spectrally white. Knowledge of the same sequence is used to reconstruct the original data at the receiving ...
Maude. This waterproof, 4.8-inch vibrator has three speeds that are easy to operate with a touch button at the base. It's designed for external and internal use, and comes with a discreet little ...
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