77 (777)
Zenith Radio Corp.; Chicago, IL
- Country
- United States of America (USA)
- Manufacturer / Brand
- Zenith Radio Corp.; Chicago, IL
- Year
- 1930
- Category
- Broadcast Receiver - or past WW2 Tuner
- Radiomuseum.org ID
- 67933
-
- alternative name: Chicago Radio Lab
77 1930 back-view
77 1930 chassis-view
77 1930 dial-view
77 1930 loudspeaker-view
77 1930 patentnumber-view
77 1930 modelnumber-view
77 1930 serialnumber-view
77 1930 ze70
77 1930 back-view closed
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Tubes
- 9
- Main principle
- TRF without regeneration; Screengrid 1926-1935
- Tuned circuits
- 5 AM circuit(s)
- Wave bands
- Broadcast only (MW).
- Power type and voltage
- Alternating Current supply (AC) / 115 Volt
- Material
- Wooden case
- from Radiomuseum.org
- Model: 77 - Zenith Radio Corp.; Chicago,
- Shape
- Console, Lowboy (legs < 50 %).
- Notes
- One dial (primary tuning control knob) ; 777 is for 25cycle mains; See also models 54 and 64 of the year before (cabinet), chassis also very similar or same.
- External source of data
- Ernst Erb
- Source of data
- Radio Collector`s Guide 1921-1932
- Circuit diagram reference
- Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931)
- Other Models
-
Here you find 4491 models, 4096 with images and 3595 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Zenith Radio Corp.; Chicago, IL
Forum contributions about this model: Zenith Radio Corp.;: 77
Threads: 1 | Posts: 1
There is a seperate power supply for this model which is not included in the schematic listed in the files of the Radiomuseum. The power supply is seperate from the radio chassis.
The power supply in the cabinet is a Zenith model ZE-70.
The power supply in the cabinet is a Zenith model ZE-70.
Mark Neubert, 06.Mar.05