Tandberg Model 11 Reel-to-Reel Tape Recorder!

A very nice professional/semi-professional grade portable reel-to-reel tape recorder for use with reporters, interviewers, filmers, and so forth. This is not the pilot version for film synchronization, but that version was available.

This Norwegian-made unit boasts three speeds, 1 7/8IPS, 3 3/4 IPS, and 7 1/2 IPS and can take up to 7" reels. This runs on 10 (!) D cells for 15VDC (later regulated to 9V inside the unit). I may later run this machine on four 18650 Li-Ion cells.

This device also has manual level control with a limiter function. It is also a three-head device (techically four-head, with fourth head used as a tachometer head reading a magnetically-coulpled signal from the motor to go to a feedback loop to regulate motor speed.

Unfortunately, this unit has a high-frequency whine problem, where the speed control tone gets into the amp a little bit. It is not from the recording, but even when the tape is not moving. I thought it was leaky capacitors, but it seems more to be from some connection somewhere, but I cannot figure out how to mitigate the problem at this time.
The high frequency whine problem I found is only happening with this particular tape loaded in it. With other tapes, it does not have that problem. Very strange, I must say.

And the lid does come off easily after all, and it even says so in the manual!

"If all else fails, read the instructions."

Видео Tandberg Model 11 Reel-to-Reel Tape Recorder! канала CassetteMaster