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Harko Senior Audion Receiver + Two-Step Amplifier Combination first version: front switch

Harko Senior Audion Receiver + Two-Step Amplifier Combination; Crosley Radio Corp.; (ID = 1170483) Radio Harko Senior Audion Receiver + Two-Step Amplifier Combination; Crosley Radio Corp.; (ID = 857504) Radio
Harko Senior Audion Receiver + Two-Step Amplifier Combination; Crosley Radio Corp.; (ID = 1199651) Radio Harko Senior Audion Receiver + Two-Step Amplifier Combination; Crosley Radio Corp.; (ID = 1199652) Radio
Harko Senior Audion Receiver + Two-Step Amplifier Combination; Crosley Radio Corp.; (ID = 1199653) Radio Harko Senior Audion Receiver + Two-Step Amplifier Combination; Crosley Radio Corp.; (ID = 1199654) Radio
Harko Senior Audion Receiver + Two-Step Amplifier Combination; Crosley Radio Corp.; (ID = 1440563) Radio
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Harko Senior Audion Receiver + Two-Step Amplifier Combination; Crosley Radio Corp.; (ID = 1170483) Radio
Crosley Radio Corp.;: Harko Senior Audion Receiver + Two-Step Amplifier Combination [Radio] ID = 1170483 933x553
Select picture or schematic to display from thumbnails on the right and click for download.
For model Harko Senior Audion Receiver + Two-Step Amplifier Combination first version: front switch, Crosley Radio Corp.; Cincinnati (OH):
Picture from a Crosley ad in 'Radio Broadcast' Vol.1, No.1, May 1922, page 81.
 
Country:  United States of America (USA)
Manufacturer / Brand:  Crosley Radio Corp.; Cincinnati (OH)
Year: 1922 Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 3: UV200 UV201 UV201
Main principle TRF without regeneration
Tuned circuits 1 AM circuit(s)
Wave bands Broadcast only (MW).
Details
Power type and voltage Storage and/or dry batteries / 6 & 22.5 & 45 Volt
Loudspeaker - This model requires external speaker(s).
Power out
from Radiomuseum.org Model: Harko Senior Audion Receiver + Two-Step Amplifier Combination [first version: front switch] - Crosley Radio Corp.;
Material Wooden case
Shape Tablemodel, Box - most often with Lid (NOT slant panel).
Notes This is the early version of the "Harko Senior Audion Receiver + Two-Step Amplifier" combination. This combination was at least possible in February 1922 - with the first version of both sets - but we have the official ad for the combination in May 1922 as "Complete Receiving Station" in "Radio Broadcast" Vol. 1, No.1, page 81. The Harko Senior Audion Receiver, a "combined tuner and audion detector" has front switch and lid. In the middle of the two knobs for the two stations, there is a front panel switch to select one or two stages of amplification. Box has overhanging lid. By the way, there are at least three different versions regarding engraving: First version February 1922 with market introduction: straight without special logo: "Crosley two step amplifier" in one line. Second version May 1922 - engraving in two lines. Third version: Later or on the same time it was available without any engraving for the name. In 1923 it was not anymore on the market.

Here is a link to some sources for this model.
Later models have no such switch on the front and are a bit cheaper. The lid is integrated and without overhang. Those later models could be bought with or without engraving "Crosley Cincinnati TWO STEP AMPLIFIER" (including the logo) - with a price difference of one $.
Price in first year of sale 41.00 $
Literature/Schematics (1) Radio Broadcast, May 1922, p. 81
Literature/Schematics (2) Radio Digest Illustrated, 1922 Jul. 08, p. 7

Model page created by Ernst Erb. See "Data change" for further contributors.



All listed radios etc. from Crosley Radio Corp.; Cincinnati (OH)
Here you find 1680 models, 1006 with images and 1158 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.




  
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