Ampex VR-1000 (1956)
Four megacycles of picture and high-fidelity sound on a 12½-inch reel of two-inch tape. This was the machine that made television time-shiftable.
Overview
Ampex showed the industry a full hour of broadcast-quality picture and high-fidelity sound on a single 12½-inch reel of two-inch tape at the 1956 NARTB convention in Chicago. The tape was replayed instantly and looked as live as the original broadcast. That was the moment videotape stopped being a laboratory curiosity and became a product. The VR-1000 was the first commercial videotape recorder, and collectors who have handled one describe it less as a tape machine than as a broadcast installation that happens to record.
The engineering problem was speed. The Ampex team ruled out a fixed head dragging past fast-moving tape, which was essentially a super-sized audio recorder. The rotating-head approach suggested by magnetic recording pioneer Marvin Camras won out. Multiple heads sat on a rotating drum spun at 14,400 rpm past wide, slow-moving tape, as Mix (November 1985, p.48) recounted. That layout is why the VR-1000 could capture the high-frequency information a four-megacycle picture demands while the tape itself crawled. The same account says the tape formula that made it work became the well-known Scotch #179, the video equivalent of Scotch #111 audio mastering tape.
The machine did not arrive as a finished, static design. Ampex kept revising it and, unusually for the era, made the revisions retrofittable. The company's own service literature describes a stream of changes to the head structure, the audio head assembly, and the control-track assembly. All of them were available to owners of earlier-production equipment and plugged into the same sockets as the parts they replaced. The audio head posts were reconfigured specifically to cut maintenance. Oxide particles piling up on the posts could scratch the finely finished tape surface and disturb the picture, and with several dozen VR-1000s running as much as fourteen hours a day, routine cleaning was not always convenient. The revised geometry reduced the buildup and stretched the interval between cleanings.
Optional accessories followed the same retrofit approach. A Tape Timer replaced the right-hand idler and needed only one relatively uncritical locating hole drilled. It measured tape accurate to within fourteen-hundredths of one percent, which is five seconds in an hour, and held that accuracy even after repeated fast-forward and rewind passes. A combined cue-track and erase kit added a 20-mil directly recorded sound track between the bottom of the vertical video tracks and the top of the horizontal control track. It was useful for voiced instructions or for tones that could trigger automatic rewind, fast-forward, and stop sequences. The erase head mounted at the left of the transport and the timer at the right, and both could be fitted to machines already in the field.
Ampex took interchangeability seriously, and it shaped the hardware. The company rejected the variable delay-line method of adjusting head quadrature. Its reasoning was that loose quality control plus per-machine electrical compensation would let improperly recorded tapes play back fine on the machine that made them, while being useless for splicing or for anyone else's deck. Ampex chose the harder mechanical route of precision manufacture and correction at the source, and shipped an industry-standard Videotape Head Alignment Tape with every VR-1000. That is why tapes recorded on one machine could be interchanged, copied, and spliced into long sequences replayed under automatic control, demonstrations Ampex staged at successive NAB conventions.
The reception was immediate. Seven months after the 1956 debut, CBS began the first regularly scheduled videotape rebroadcast, replaying Douglas Edwards' evening news on the West Coast. Production machines started coming off the line late in 1957, the first going to KING-TV in Seattle. By mid-March 1959, according to Ampex's own accounting to the NAB Engineering Conference, more than three hundred Videotape recorders were in use across more than eighty-five television installations, fourteen of them color-converted. Monochrome production exceeded two machines every working day. More than 2,500 plug-in head assemblies had been manufactured by that point, the first ones hand-assembled from pieces fabricated under a microscope lens.
The VR-1000 is less a piece of hi-fi than a piece of broadcasting history with a formidable footprint: consoles, outboard electronics chassis, monitor mounts, and a transport that expects two-inch tape and a maintenance regimen. It is not a machine anyone buys casually, and the population that survives is small relative to the three hundred-plus that were working in 1959. The 1960 Rome Olympics, the 1959 "Kitchen Debate," and the first videotaped commercials all run back through this deck.
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