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1 inch Ampex

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 1 inch ampex
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Ampex A format home video
Ampex A format home video

Ampext Atype Studio VTR
Ampex A format studio VTR

Format name A-format  
Company Ampex and many others
 
Dates in use 1965- early 1980s  
Risk Great risk of signal los and hardware obsolescence  
Tape width 1 inch 25.4 mm  
Reel diameter Max 29.7 cm  
Analogue/digital Analogue  
Usage Industrial / Educational / Consumer  
Playback equipment Located by some broadcast company’s and studio’s  
Remarks Drum with 1 video head
Some 1 inch. VTR's with one video head, scan only 355 degrees of the video drum. You will see on the bottom of the image a gray field because missing lines, due to less line-scanning capabilities.
 
Links http://en.wikipedia.org/wiki/1_inch_type_A_videotape  
   
Go to other formats:
 
Open reel systems, analogue
| Quadruplex 2 inch | 1 inch type A, ampex | 1 inch different brandnames | 1 inch C format, Sony - Ampex | 1 inch type B | 1/2 inch, Sony | 1/2 inch different brandnames | 1/4 inch Akai |
Cassette systems, analogue | Umatic LB | VCR | Akai VK | Sanyo V-cord | Cartridge National | VHS / S-VHS / VHS-C | Betamax | Quasar VX | Video 2000 | CVC Format | Umatic HB | Betacam | Panasonic M | Video 8 / Hi8 | Betacam SP |
Cassette systems, digital

D1 | D2 | D3 | HDV1000 | DCT | Digital Betacam | D5 | D5HD | Digital-S (D9) | Digital Beta SX | D6 | DVCPRO-25 | DVCPRO-50 | DVCPRO-100 / HD | DV | DVCAM | D11 HDCAM | Digital-8 | D10-MPEG IMX |