90A late
Philco Products Ltd.; Toronto
- Country
- Canada
- Manufacturer / Brand
- Philco Products Ltd.; Toronto
- Year
- 1931/1932
- Category
- Broadcast Receiver - or past WW2 Tuner
- Radiomuseum.org ID
- 184382
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Tubes
- 9
- Main principle
- Superhet with RF-stage; ZF/IF 175 kHz
- Tuned circuits
- 7 AM circuit(s)
- Wave bands
- Broadcast only (MW).
- Power type and voltage
- Alternating Current supply (AC) / 25 to 60 cycles, 110 Volt
- Loudspeaker
- Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
- from Radiomuseum.org
- Model: 90A [late] - Philco Products Ltd.; Toronto
- Notes
-
Models 90 and 90A were available in a cathedral, a lowboy, and a highboy cabinet. The chassis was made in three versions - an early model 90 and 90A with two 45 output tubes in push-pull, a middle version with one 47 output tube, and a late version with two 47 output tubes. Model 90 is for 115 VAC 50-60 Hz; model 90A is for 115 VAC 25-60 Hz.
The models 90 and 90A "early" and "middle" have a 4-gang tuning condenser plus 3 tuned IF circuit - both with IF 175 (Rider's change note 8-3). The version "middle", which are above serial number 237,001, of the model 90 and 90A has tubes: 24 RF, 27 osc, 24 1st det., 24 IF, 27 2nd det. rect., 27 det. amp., 27 1st AF amp, 47 output and 80 rectifier. The "late" model 90 and 90A again have push-pull output but with 2 x 47 tubes. See Rider's Philco 3-35 for IF 260 kHz. Applied on models serial B-32001 to B-35000 and above B-53100. They have a 3-gang tuning condenser and only 6 tuned circuits. The same differences can be found for all cabinets, both 90 and 90A: Baby Grand (Cathedral), Lowboy and Highboy (with a stretcher).
The cathedral cabinet is the classic design by Edward L. Coombs, and is similar to the cathedral versions of model 21, 35, 46, and 70. [3331438-1133]
- Circuit diagram reference
- Radio College of Canada
- Literature/Schematics (1)
- Canada schematics Philco page 11
- Author
- Model page created by Dirk Taekels. See "Data change" for further contributors.
- Other Models
-
Here you find 233 models, 173 with images and 145 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Philco Products Ltd.; Toronto