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U-FORMAT H --- by Sony (IEC60B(CO)109)

U-format was the first helical format to gain wide acceptance. The high band (H) variant is widely used in ENG and other broadcast applications. Two sizes of cassette are in common use, the smaller being intended for compact portable recorders.

Signal system
Analogue, composite, 'colour under'.
Geometry Helical
No. of rotating heads 6 (typical)  
Scanner diameter 110.0 mm
Rotation speed 25 rev/s
Tracks/revolution 2  
Head-to-tape speed 8.54 m/s
Video track angle 4.97 degree
Track width 85.0 µm
Track pitch 137.0 µm
Azimuth Perpendicular degree
Tape Properties
Coercivity 650 Oe
Type Cobalt modified oxide
Width 19.00 mm
Thickness (total) 27 µm
Tape Consumption
Linear 95.3 mm/s
Areal 0.11 m²/min
Shelf volume 990 cm³/h
Electrical Characteristics
Sync tip carrier frequ. 4.8 MHz
Peak white 6.4 MHz
Chroma s/c 0.924 MHz
Shortest wavelength 1.33 µm


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