Re: Sony TC-105 Reel-to-Reel Recorder

From: Asimov (Asimov_at_-removethis-bbs.juxtaposition.dynip.com)
Date: 02/05/05 

Date: Saturday, 05 Feb 2005 15:26:36 -500

"Buck Frobisher" bravely wrote to "All" (05 Feb 05 10:33:43)
 --- on the heady topic of "Re: Sony TC-105 Reel-to-Reel Recorder"

 BF> From: "Buck Frobisher" <farside114@hotmail.com>
 BF> Xref: aeinews sci.electronics.repair:9526

 BF> "WEBPA" <webpa@aol.com> wrote in message
 BF> news:20050204200718.21978.00000364@mb-m05.aol.com...
> Don't think you never will get 4 simultaneous audio channels from a Sony
> TC-105
> or '105A. They are 4-track, 2 channel machines. In 1/4 inch tape parlance
> this
> means: 4 linear tracks (with guard bands) consisting of a stereo pair for
> each
> direction.
>
> A hint about the machine's number of tracks is: How many VU meters are on
> the
> front panel? Two or Four. That's how many tracks it can record and play
> at the
> same time.

 BF> Dude, it's a MONO machine. ONE VU meter. On each side of the tape
 BF> the "track exchange" switch allows you to select which of the
 BF> available tracks on that side you can play. Then you flip the tape
 BF> over and have the same choice on the other side.

 BF> In other words, -no- stereo playback. Or record, for that matter.

 BF> --
 BF> "Stay strong. Be brave. Wait for the signs."

 BF> Regards,

Frank,

I have a small MONO portable German made machine with track switching
similar to that. It is a SABA TK125. When it was given the person said
it was used by a missionary in Africa, whatever... Anyways, there is
only one output tube and only one speaker but it plays back 2 tracks
at a time in MONO. There is a switch to select between 1-2 or 3-4.

The only odd thing is the DIN speaker socket has both speaker I and II
labeled. BUT it is MONO, no doubt about it. After cleaning all the
axles and relay contacts it works nicely now. It is very
pre-transistor 50's looking, in modern green plastic not bakelite.

 A*s*i*m*o*v

... That was a fascinating period of time for electronics

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