Type C videotape
Sony BVH-2000 1 inch VTR
|Media type||Magnetic Tape|
|Read mechanism||Helical scan|
|Write mechanism||Helical scan|
1 inch Type C (designated Type C by SMPTE) is a professional reel-to-reel analog recording helical scan videotape format co-developed and introduced by Ampex and Sony in 1976. It became the replacement in the professional video and broadcast television industries for the then-incumbent 2 inch Quadruplex videotape (2 inch Quad for short) open-reel format, due to the smaller size, comparative ease of operation (vs. 2 inch) and slightly higher video quality of 1 inch type C video tape recorder (VTR).
1 inch Type C is capable of "trick-play" functions such as still, shuttle, and variable-speed playback, including slow motion. 2 inch Quadruplex videotape machines lacked these capabilities, due to the segmented manner in which it recorded video tracks onto the magnetic tape. Also, 1 inch Type C VTRs required much less maintenance (and used less power and space) than did 2 inch machines.
The quality and reliability of 1 inch Type C made it a mainstay in television and video production in television studios for almost 20 years, before being supplanted by more compact videocassette formats like Betacam, DVCAM, D-1, D-2 and DVCPro.
Some Ampex models 
- VPR-2 1976, studio model
- VPR-20 1977, Portable
- VPR-2A studio model
- VPR-2B studio model
- VPR-80 studio model
- VPR-6 studio model
- SMC-60 slow Motion system
- VPR-3 studio model, with air system like AVR-1
- XVR-80 wideband VTR
- VPR-5 portable made in jointly with Nagra
Some Marconi models 
- MR2 studio model
Some Sony models 
- BVH-1000 1979 studio model
- BVH-1100 with Dynamic head Tracking- DT, with digital TBC Model BVT-2000
- BVH-500 portable
- BVH-2000 studio model
- BVH-2180 3 hour record play model
- BVH-2500P PAL VR
- BVH-2500 Delta Time VTR
- BVH-2800/2 VTR With PCM Audio
- BVH-3000 Studio model
- BVH-3100 Studio model
Some Hitachi, Ltd. – Shibaden Models 
- HR-200 Studio model
- HR-230 2 and 3 hour Record/Play Studio model
- HR-100 portable model, 42 pounds 
Some NEC Models 
- TT-7000 Studio VTR ($38,000 new in 1987)
Some RCA Models 
- TH-100 was a re-badged Sony BVH-1000.
- TH-200A was a re-badged Sony BVH-1100A.
- TH-50 was re-badged Sony portable.
- TR-800 was an RCA engineered and built VTR, likely why it has the "TR-" designation, as all the RCA Quad recorders did. While the TH-800 was developed by RCA, the scanner assembly and upper drum could be replaced with Sony BVH-1100A parts.
In 1983, RCA turned to Ampex for supply of Helical VTR's.
- TH-400 was a re-badged Ampex VPR-80
- TH-900 was a re-badged Ampex VPR-3
- TH-700 was a re-badged Ampex VPR-6
Some 3M models 
See also 
- adsausage.com VPR-20 Add
- sausage.com VPR-2B studio model add
- adsausage.com HR-100 portable add
- adsausage.com 3M TT-7000 VTR add
- Information on a 1 inch Type C VTR, the Ampex VPR-1.
- - VPR-2
- labguysworld.com Ampex VPR
- youtube.com Ampex/Nagra VPR-5」 NTSC 1-inch type-C portable VTR
- youtube.com Labguy checks out his Ampex Nagra VPR-5
- youtube.com Ampex VPR 3
- youtube.com Close-up of the Ampex VPR 3 in operation
- youtube.com History of Ampex
- Video editing and post-production: a professional guide, page 45, By Gary H. Anderson
- lionlamb.us Ampex List
- montreuxsounds.com Sony "C"