|Year: 1932/1933||Category: Broadcast Receiver - or past WW2 Tuner|
|Valves / Tubes||10: 58 58 56 58 56 56 46 46 82 56|
|Main principle||Superhet with RF-stage; ZF/IF 175 kHz|
|Wave bands||Broadcast only (MW).|
|Power type and voltage||Alternating Current supply (AC) / 105-125 Volt|
|Loudspeaker||Electro Magnetic Dynamic LS (moving-coil with field excitation coil)|
|Power out||7 W (unknown quality)|
|from Radiomuseum.org||Model: R74 - RCA RCA Victor Co. Inc.; New|
|Shape||Tablemodel, Tombstone = decorative upright, not cathedral but can have rounded edges.|
|Dimensions (WHD)||14.75 x 20 x 11.25 inch / 375 x 508 x 286 mm|
Class B amplification. Information from Alan Douglas for this model: "According to the "Red Book", the RCA service manual 1931/32, this RCA model R-74 had a market introduction June 1932 with a list price of $ 73.75 and it was announced to dealers June 23, 1932 and June 28 1932 the sample shipments to dealers went out and date of stock shipments was June 30, 1932. This model was sold 8140 times."
Stein names two bands!
|Net weight (2.2 lb = 1 kg)||44 lb (44 lb 0 oz) / 19.976 kg|
|Price in first year of sale||73.75 $|
|External source of data||Ernst Erb|
|Source of data||Radio Collector`s Guide 1921-1932|
|Circuit diagram reference||Rider's Perpetual, Volume 3 = 1933 and before|
|Mentioned in||The Radio Collector's Directory and Price Guide 1921 - 1965|
|Literature/Schematics (1)||Collector's Guide to Antique Radios (6th edition)|
|Literature/Schematics (2)||RCA Victor Service Notes "Red Book" Series|
|Literature/Schematics (3)||Cathedral & Tombstone Radios (page 222.)|
All listed radios etc. from RCA (RCA Victor Co. Inc.); New York (NY)
Here you find 4585 models, 2657 with images and 3750 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.