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If the first digit is 4, ... 3 – Tube used in TV broadcasting equipment; 4 – Tube for ... Some letter prefixes are manufacturer's codes: C – RCA ...
8D21—Internally water cooled dual tetrode used in early VHF TV transmitters. This numbering system was abandoned in 1944 in favor of a non-descriptive numbering system of 4 digit numbers beginning with 5500. This new system persisted until the final days of tubes, with type numbers registered up into the 9000 series.
FM channel 200, 87.9 MHz, overlaps TV 6. This is used only by K200AA.Channel 6A is only used in South Korea, and the Philippines. TV 6 analog audio can be heard on FM 87.75 on most broadcast radio receivers as well as on a European TV tuned to channel 4A or channel C, but at lower volume than wideband FM broadcast stations, because of the lower deviation.
Harmony 670, a universal remote.. A universal remote is a remote control that can be programmed to operate various brands of one or more types of consumer electronics devices. . Low-end universal remotes can only control a set number of devices determined by their manufacturer, while mid- and high-end universal remotes allow the user to program in new control codes to the rem
Examples of this format are "PL302" and "EF183". From about the start of the 1960s an extra digit was needed for new devices. Either a digit 1 was inserted before the 8 or other base-defining digit (e.g. an EF184 is a Noval pentode), or a three-digit sequence was used. For example, a PL500 is a power pentode in a Magnoval base.
The code word is repeated every 113.778 ms (4096 ÷ 36 kHz) as long as a key remains pressed. ... Extension to TV 1 and TV 2 2, 4b 4 LV (LaserVision player) 2, 3, 6 5 ...
Colortrak 2000 was a brand name used for RCA's high-end television models produced from the early-1980s to the early 1990s. Colortrak 2000 was situated above the less expensive Colortrak line, but below the more expensive Dimensia line. As opposed to ColorTrak, ColorTrak 2000 models incorporated a comb filter, which provided a sharper picture.
The XL-100 was a line of solid-state television sets introduced by RCA in 1971. [1] The "XL" stands for extended life chassis while the 100 refers to RCA's emphasis of 100% solid-state chassis. Initially the top-of-the-line RCA color televisions, they would become lower-end as the Colortrak and Dimensia series were introduced (in the mid-1970s ...