Nagra T-RVR

• Brand: Nagra

NAGRA T-RVR - A monaural or stereo machine designed with the 19" rack format. It is a reel to reel 1/4" tape recorder designated for automatic long recording using the four  standard tape speeds. The machine is equipped with an automatic start recording device actuated by the input signal and, at the tape end, allows automatic connection to another machine that starts to record in a new tape without loss of signal. When equipped with the accessory RCHS, Time Code Reader Searcher, the machine allows the high speed search of a particular sequence when its time code had been entered by the keyboard or from its memory. This machine were used by intelligence services of several countries and logging service of radio stations.

[Source: Wikipedia, the free encyclopedia, edited]

Principal features:

• 3 DC servo-controlled motors, without pinch wheel
• Uses ¼" tape, 0.5 to 2.0 mil
• 5 to 7" reel size
• Recording time: 12 hours, on 7" reel @ 15/16 ips
• Basic one track model, expandable to 2-Channel plus Time Code
• Power: 20 to 30 VDC approx. 800 mA
• Input impedance: > 1 MΩ AC, 250 Hz
• Line input: single symmetrical line (balanced)
• Output line: single, asymmetrical, 600 Ω, 0 dBm
• Headphone output: stereo, min. 2x 25 Ω
• Limiter: one
• Fast playback: 4x or 16x stabilized speed to aid quick identification on a given recording
• Wow & flutter: < 0.09% p-p at 1 7/8 ips
• Distortion: < 2% at nominal level
• Frequency response: 170 Hz to 5 kHz at 15/16 ips, to 10 kHz at 1 7/8 ips, to 15 kHz at 3 ¾ ips
• Signal-to-noise ratio: 50 dB at 15/16 ips, 55 dB at 1 7/8 ips and 58 dB at 3 ¾ ips.
• Interface for digital remote control available
• Speed varier: +100%, -50% max.
• Operating temperature and humidity: 0° to 70°C, 20% to 95% rH

[Technical givens from manufacturer Kudelski S.A.]

In questo link sono elencati 48 modelli, di cui 45 con immagini e 19 con schemi.
Elenco delle radio e altri apparecchi della Kudelski SA; Cheseaux-sur-Lausanne