Radiola Superheterodyne AR-812 "Semi-Portable"
RCA (RCA Victor Co. Inc.); New York (NY)
- Country
- United States of America (USA)
- Manufacturer / Brand
- RCA (RCA Victor Co. Inc.); New York (NY)
- Year
- 1924
- Category
- Broadcast Receiver - or past WW2 Tuner
- Radiomuseum.org ID
- 54765
-
- alternative name: RCA Manufacturing || Victor Talking Machine
Aus / From NHK Museum Tokyo Japan
RCA advertisement, March 1925
RCA Advertisement, 1924
Radio Broadcast, Mar. 1924, p. 443
Radio Broadcast, Jun. 1924, p. 189
Radio Broadcast, Jul. 1924, p. 205
Advertise 1924
Open catacomb, wax melted 45min at 170°C
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Tubes
- 6
- Main principle
- Superheterodyne (common); ZF/IF 50 kHz; 2 AF stage(s); Reflex
- Tuned circuits
- 5 AM circuit(s)
- Wave bands
- Broadcast only (MW).
- Power type and voltage
- Dry Batteries / 2 x 45 or 4 x 22,5 & 6 x 1.5 Volt
- Loudspeaker
- - This model requires external speaker(s).
- Material
- Wooden case
- from Radiomuseum.org
- Model: Radiola Superheterodyne AR-812 "Semi-Portable" - RCA RCA Victor Co. Inc.; New
- Shape
- Portable set > 8 inch (also usable without mains)
- Dimensions (WHD)
- 35 x 11 x 11 inch / 889 x 279 x 279 mm
- Notes
-
2nd harmonic mixer; two dials (primary tuning control knobs) . "Portable". Self contained loop aerial. Speaker output selectable from V5 or V6.
V1 = RF & 1st IF reflexed.
V2= Oscillator/1st Detector.
V3= IF.
V4= 2nd Detector.
V5= 1st AF.
V6= 2nd AF.Siehe auch Triodensuperhets.
- Price in first year of sale
- 220.00 $
- External source of data
- Ernst Erb
- Source of data
- Radio Collector`s Guide 1921-1932
- Literature/Schematics (1)
- Radio Manufacturers of the 1920's, Vol. 3
- Literature/Schematics (2)
- Radio Broadcast, Mar. 1924, p. 443
- Other Models
-
Here you find 5132 models, 3235 with images and 4167 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from RCA (RCA Victor Co. Inc.); New York (NY)
Collections
The model Radiola Superheterodyne is part of the collections of the following members.
Museums
The model Radiola Superheterodyne can be seen in the following museums.
Literature
The model Radiola Superheterodyne is documented in the following literature.
Forum contributions about this model: RCA RCA Victor Co.: Radiola Superheterodyne AR-812 "Semi-Portable"
Threads: 3 | Posts: 3
Armstrong explains some of his research work trying to do the first super heterodyne radio viable.
Obtained from a copy of Wireless Age, April 1924, stored in americanradiohistory.com
Attachments
- AR812 development Part I (189 KB)
- AR812 development Part II (199 KB)
Moisés Piedade, 28.Aug.14
The AR-812 is pictured briefly in Fritz Lang's first sound film "M" from 1931.
Mark Hippenstiel, 11.Apr.13
Konrad Birkner † 12.08.2014, 07.Mar.04