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Converter 7

Converter 7 ; Crosley Radio Corp.; (ID = 1114915) Converter
 
Converter 7 ; Crosley Radio Corp.; (ID = 1114916) Converter
 
Converter 7 ; Crosley Radio Corp.; (ID = 937349) Converter
 
Converter 7 ; Crosley Radio Corp.; (ID = 937350) Converter
Converter 7 ; Crosley Radio Corp.; (ID = 938202) Converter Converter 7 ; Crosley Radio Corp.; (ID = 938203) Converter
Converter 7 ; Crosley Radio Corp.; (ID = 938204) Converter Converter 7 ; Crosley Radio Corp.; (ID = 943490) Converter
Converter 7 ; Crosley Radio Corp.; (ID = 943491) Converter Converter 7 ; Crosley Radio Corp.; (ID = 943492) Converter
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Converter 7 ; Crosley Radio Corp.; (ID = 938202) Converter
Crosley Radio Corp.;: Converter 7 [Converter] ID = 938202 700x525
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For model Converter 7, Crosley Radio Corp.; Cincinnati (OH)
 
Country:  United States of America (USA)
Manufacturer / Brand:  Crosley Radio Corp.; Cincinnati (OH)
Year: 1930 ? Category: Pre-stage (adaptor for SW/FM/VHF/UHF incl. built-in), Frequency converter
Valves / Tubes 4: UY224 UY227 UY224 UX280
Main principle Superheterodyne (common)
Wave bands Short Wave (SW only)
Details
Power type and voltage Alternating Current supply (AC) / 110 Volt
Loudspeaker - - No sound reproduction output.
Power out
from Radiomuseum.org Model: Converter 7 - Crosley Radio Corp.;
Material Wooden case
Shape Tablemodel, Box - most often with Lid (NOT slant panel).
Dimensions (WHD) 300 x 245 x 220 mm / 11.8 x 9.6 x 8.7 inch
Notes The Rider's schematic Crosley 2-1 shares the same schematic for the converters model 7 and model 7-1. The model 7 is a set for attaching to any broadcast receiver in order to adapt the latter to the reception of short-wave signals. The incoming signal is being converted to a frequency within the regular broadcast range by the use of an oscillator and detector. After conversion to the appropriate frequency the signal is delivered to the aerial and ground terminals of the broadcast receiver. The first stage is an untuned buffer amplifier UY224, followed by the tuned oscillator UY227 and the tuned detector UY224. The model 7-1 is similar but with one tube less and a tuned antenna circuit. It has a UY224 as first detector, a UY227 oscillator and a UX280 rectifier. Rider's Crosley 2-2 shows details about the model 7-1 voltage and shows the details for the model 7-2 converter. The "Converter 7-2" is a short wave adapter without a power pack. It obtains its power from the croadcast receiver. Instead of plug-in frequency change coils, it is equipped with a coil changing switch. There are five switch positions, four of which are for short-wave reception, and the fifth for operating the ordinary broadcast receiver. It has a YU227 oscillator and a UY224 detector only. It operates with a set with a pentode output tube which will be used with an adapter for the power cable plug.
Net weight (2.2 lb = 1 kg) 6.750 kg / 14 lb 13.9 oz (14.868 lb)
External source of data Ernst Erb
Circuit diagram reference Rider's Perpetual, Volume 2 = 1932 (Models 1931/1932)


All listed radios etc. from Crosley Radio Corp.; Cincinnati (OH)
Here you find 1681 models, 1006 with images and 1160 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.




  
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