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Tape length usually is measured in minutes of total playing time. Many of the varieties of blank tape were C60 (30 minutes per side), C90 (45 minutes per side) and C120 (60 minutes per side). [1] Maxell makes 150-minute cassettes (UR-150) - 75 minutes per side.
In 1989 JVC increased the run time to 30 minutes by using thinner tape. [3] Later, JVC offered 45-minute and 60-minute cassettes. For comparison, 120-minute 8-mm cassettes became available in the late 1985 and quickly became the norm. Later, 150-minute and 180-minute 8-mm cassettes were offered as well.
The thickest tape normally used in cassettes is about 16-18 μm in thickness, and is used in C60 cassettes and in shorter lengths such as the C46. As the standard tape speed for a compact cassette is 1 + 7 ⁄ 8 ips (4.75 cm/s) and a C60 cassette records 30 minutes per side, a C60 cassette in theory holds 281 + 1 ⁄ 4 ft (85.73 m) of tape. In ...
On sites like eBay and LoveAntiques, collectible VHS tapes are valued at upwards of nearly $10,000 - depending on the rarity and condition of the tape, of course.
Cassette tape, a two-spool tape cassette format for analog audio recording and playback and introduced in 1963 by Philips; DC-International, a format that was created by Grundig after Phillips had abandoned an earlier format that was being created alongside the Compact Cassette; 8-track tape, continuous loop tape system introduced in 1964
Cassettes of various periods and price points can be sorted into three distinct groups: basic coarse-grained tapes; advanced fine-grained, or microferric, tapes; and highest-grade ferricobalt tapes, having ferric oxide particles encapsulated in a thin layer of cobalt-iron compound.
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