Tesla BS367 signal tracing instrument

     Under construction...

     The device is equipped with tubes:
1x 6Z31 two-way rectifier
1x 6CC41 double triode
1x 6L31 power beam tetrode
1x EM80 tuning indicator, in some pieces replaced by a soviet equivalent 6E1P (6Е1П), in some pieces there's a bit different EM81
1x 6CC31 double triode, in some pieces replaced by a soviet equivalent 6N15P (6Н15П)

Tesla BS367 signal tracing instrument - schematic version I (older, R10 series values, a switch for a neon lamp or a tungsten lamp continuity tester).


Tesla BS367 signal tracing instrument - schematic version II (newer, E12 series values, neon lamp or tungsten lamp continuity tester selected by where the plug is inserted).

Restored Tesla BS367 signal tracing instrument

Tesla BS367 signal tracer - restored and fully working.


Restored and fully functional Tesla BS367 signal tracer.


Tesla BS367 signal tracer restored, fully functional, glowing tubes (cover removed from E6).


Tesla BS367 signal tracker working, after putting the cover on the E6 tube.


Tesla BS367 signal tracer - back in the cabinet.


Tesla BS367 signal tracer - the back with the labels.

Tesla BS367 signal tracing instrument during restoration

Tesla BS367 signal tracing instrument disassembled


Tesla BS367 signal tracing instrument chassis from the front


Tesla BS367 signal tracing instrument chassis from the front right


Tesla BS367 signal tracing instrument chassis from the front left


Tesla BS367 signal tracing instrument chassis from the back


Tesla BS367 signal tracing instrument chassis from the back right


Tesla BS367 signal tracing instrument chassis from the back left


Tesla BS367 signal tracing instrument chassis bottom


Tesla BS367 signal tracing instrument chassis bottom from the right


Tesla BS367 signal tracing instrument chassis bottom from the left


Tesla BS367 signal tracing instrument chassis bottom from the back

Tesla BS367 signal tracing instrument before restoration

Tesla BS367 signal tracker before restoration - from the front. Buttons missing, indicators broken.


Tesla BS367 before restoration - from above. Pretty bad condition. Everything dirty, rusty, spiders and spiderwebs. In addition, it probably fell because the speaker broke off and was flying freely inside. The original speaker cloth is torn.


The signal tracker before restoration - from the back. Note the audio output transformer, which is slanted after the impact! The leather handle is completely rotten.


Tesla BS367 signal tracker - a paradise for spiders and dust. The bakelite fuse holder broken.


Tesla BS367 signal tracker. The loose speaker knocked down the tubes like bowling pins.


Tesla BS367 signal tracker before restoration - chassis from below. Another spider's house.



Added: 30. X. 2024
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