Columbia 931 Schematic purchase

Schematics
Search
Valve
Data
Transistor
Data
Contact
Information
Free
Radio Books
Privacy
Policy
Trustpilot
5 Star Trust Pilot

Supporting the Right to Repair!
Schematics sent by Email £1.80 (~ $2.20 or €2.10)

Saturday 9/5/2026 14:17
I am away until Thursday evening 21/12/2023 I cannot send any schematics marked TO SCAN until home, pre-scanned ones will be sent probably in the evening UK time
Columbia 931 (Rider : - 1 P: 7)
£1.80 (~ $2.20 or €2.10)
Not the correct model? go back to the search page to change
Check your Email address is correct...
Check Spam folder if nothing received!
Email me to advise of alternative address.

The schematic will be taken from Rider-Vol 01-1933

Rider-Vol 01-1933 preview

Columbia 931 Specification spec data sheet

These notes are automatically scraped from Google, Bing, Yahoo, Yandex
by an Artificially (not so) Intelligent algorithm
CountryUSA
ManufacturerColumbia Phonograph, American / Volta Graphophone Company; USA
Alternative Name American Graphophone || Columbia Recording
Model931 - Columbia Phonograph, American
Year: 1930Category: Sound/Video Recorder and/or Player
Valves3: UX226 UX250 UX281
TechnologyAudio-Amplification
Wave Bands- without
DetailsRecord Player
Power typeAC / 110 Volt
SourceBook: gernsback Vol: 1 Page: 120
SourceBook: rider Vol: 1 Page: 7