radiomuseum.org

7500 Ch= 12K25 + 7K31

7500 Ch= 12K25 + 7K31; Zenith Radio Corp.; (ID = 155418) Radio
 
7500 Ch= 12K25 + 7K31; Zenith Radio Corp.; (ID = 155419) Radio
Use red slider bar for more.
7500 Ch= 12K25 + 7K31; Zenith Radio Corp.; (ID = 155418) Radio
Select picture or schematic to display from thumbnails on the right and click for download.
 
Country:  United States of America (USA)
Manufacturer / Brand:  Zenith Radio Corp.; Chicago, IL
alternative name
 
Chicago Radio Lab
Year: 1962 ? Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 19: 6JK8 6BA6 6EQ7 6BN6 6AU6 6BC7 6BA6 6BE6 6EA8 6BN8 12AX7A 12AX7A 6CG7 6CG7 6BQ5 6BQ5 6BQ5 6BQ5 5U4GB
Main principle Superhet with RF-stage; ZF/IF 455/10700 kHz
Wave bands Broadcast (BC) and FM or UHF.
Details Changer (Record changer)
Power type and voltage Alternating Current supply (AC) / 120 Volt
Loudspeaker 7 or more Loudspeakers
Power out
from Radiomuseum.org Model: 7500 Ch= 12K25 + 7K31 - Zenith Radio Corp.; Chicago,
Material Wooden case
Shape Console with any shape - in general
Notes The Beitman schematic (R23) from 1963 shows the same schematic, chassis 12K25, for the models MK2670, MK2675, MK2685 and 7500. For the 2nd Audio/ Phase inverter, each channel uses either 6CG7 or 6FQ7. The 4 power tubes 6BQ5 drive twice 4 loudspeakers: 2 x 3.5" tweeter, a tweeter horn and a 12" woofer. The tubes for the second chassis, 7K31 are: 6CG7 6CG7 6BQ5 6BQ5 6BQ5 6BQ5 5U4GB.
Circuit diagram reference Beitman Radio Diagrams Vol. 23, 1963

Model page created by Egon Penker. See "Data change" for further contributors.



All listed radios etc. from Zenith Radio Corp.; Chicago, IL
Here you find 4233 models, 3848 with images and 3347 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.



  
rmXorg