Trav-ler Professional Tape Recorder

Casian Ltd. has announced its second battery portable recorder. The new machine, which can also be used from the mains supply, is the Trav-ler Professional. The price is 85 guineas.

A single-speed machine, 7½ ips.

The claimed frequency response is 30-12,000 cps ± 1 dB. The signal-to-noise ratio is given as better than 55dB unweighted and wow and flutter as better than 0.2 % r.m.s., measured using a G.B. Kalee Meter.

Six Vidor type T6007 batteries or their equivalent provide the driving power, and the battery life is estimated at over 50 hours.

A single 9-volt motor is employed. running at a constant speed over a wide voltage range. The facility of pause control is included. The recording time available is 22 minutes, using a three-inch spool of double-play tape. The rewind time for such a spool is 90 seconds.

The main function switch gives control as follows: rewind, replay only, on/off. record and monitor replay, fast forward record level control, meter/monitor switch, and pre-set replay level control. Sockets are provided for ribbon or moving coil microphones (25 Ω input); 600 Ω line input at line level; 600 Ω line output at line level or monitoring headphones.

A 100 micro-amp two-inch moving coil V.U. meter is switchable to give record level/line replay level/battery state.

Two units are employed: the recorder itself, incorporating the replay amplifier, and a second unit housing an amplifier providing one-watt output through a 7 x 4 in. elliptical loudspeaker.  

Here you find 2 models, 2 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Casian Ltd.; London