RCA 104 ;SPU Schematic purchase

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Schematics sent by Email £1.80 (~ $2.20 or €2.10)

Saturday 27/4/2024 11:24
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
RCA 104 ;SPU (Rider : - 1 P: 23)
£1.80 (~ $2.20 or €2.10)
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The schematic will be taken from Rider-Vol 01-1933

Rider-Vol 01-1933 preview

RCA 104 ;SPU Specification spec data sheet

These notes are automatically scraped from Google, Bing, Yahoo, Yandex
by an Artificially (not so) Intelligent algorithm
CountryUSA
ManufacturerRCA (RCA Victor Co. Inc.); New York (NY)
Alternative NameRCA Manufacturing || Victor Talking Machine
ModelU-104 Chassis = RC-345H - RCA RCA Victor Co. Inc.; New
Year: 1931Broadcast Receiver
TransistorsBK55B
Valves4: 6K7 6J7 25L6G 25Z5
TechnologyTRF without regeneration
Tuned Circuits2 AM circuit(s)
Wave BandsBroadcast only (MW).
DetailsRecord Player (not changer)
Power TypeAlternating Current supply (AC) / 105-125 Volt
Dimensions12.2 x 9 x 9.5 inch / 310 x 229 x 241 mm
SourceMyFile: RCA_Radiola-28_28 Super_104_104 Power Speaker-1931.RadioCraft.Radio.jpg
SourceBook: Gernsback Vol: 2 Page: 325
SourceMyFile: RCA-104-1935.RadioCraft.jpg
SourceBook: Rider Vol: 1 Page: 55
SourceBook: Rider Vol: 3 Page: 6
SourceBook: Rider Vol: 1 Page: 21
SourceBook: Rider Vol: 1 Page: 23