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20 (20B) Baby Grand (Deluxe Baby Grand) Cathedral, late

20 Baby Grand ; Philco, Philadelphia (ID = 380439) Radio
 
20 Baby Grand ; Philco, Philadelphia (ID = 380440) Radio
 
20 Baby Grand ; Philco, Philadelphia (ID = 380443) Radio
 
20 Baby Grand ; Philco, Philadelphia (ID = 380438) Radio
 
20 Baby Grand ; Philco, Philadelphia (ID = 489102) Radio
 
20 Baby Grand ; Philco, Philadelphia (ID = 489103) Radio
20 Baby Grand ; Philco, Philadelphia (ID = 820322) Radio 20 Baby Grand ; Philco, Philadelphia (ID = 49364) Radio
20 Baby Grand ; Philco, Philadelphia (ID = 705504) Radio 20 Baby Grand ; Philco, Philadelphia (ID = 975496) Radio
20 Baby Grand ; Philco, Philadelphia (ID = 1236017) Radio 20 Baby Grand ; Philco, Philadelphia (ID = 1236018) Radio
20 Baby Grand ; Philco, Philadelphia (ID = 1236019) Radio 20 Baby Grand ; Philco, Philadelphia (ID = 1236020) Radio
20 Baby Grand ; Philco, Philadelphia (ID = 1346304) Radio 20 Baby Grand ; Philco, Philadelphia (ID = 1466808) Radio
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20 Baby Grand ; Philco, Philadelphia (ID = 820322) Radio
Philco, Philadelphia: 20 Baby Grand [Radio] ID = 820322 805x933
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For model 20 (20B) Baby Grand (Deluxe Baby Grand) Cathedral, late, Philco, Philadelphia Stg. Batt. Co.; USA
 
Country:  United States of America (USA)
Manufacturer / Brand:  Philco, Philadelphia Stg. Batt. Co.; USA
Year: 1930/1931 Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 7: 24 24 24 27 71A 71A 80
Main principle TRF without regeneration; Screengrid 1926-1935
Tuned circuits 3 AM circuit(s)
Wave bands Broadcast only (MW).
Details
Power type and voltage Alternating Current supply (AC) / 115 Volt
Loudspeaker Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
Power out
from Radiomuseum.org Model: 20 Baby Grand [Cathedral, late] - Philco, Philadelphia Stg. Batt
Material Wooden case
Shape Table-Cathedral-Type (upright, round top or gothic arch, not rounded edges only).
Dimensions (WHD) 16 x 18 x 10 inch / 406 x 457 x 254 mm
Notes

The cathedral cabinet for model 20 was updated in early 1931 with a maple overlay on the front of the arch and ribbed columns supporting the arch.

Model 20 was also available in a small console cabinet.

The "-B" (for "Baby Grand") suffix for cathedrals was not used by Philco until later models, although some collectors may call this model "20B".

For the model 20 series, Philco used the term "Baby Grand" for both the cathedral and console versions, unlike later models where "Baby Grand" was used exclusively for cathedrals.

The "DeLuxe" name may not have been used by Philco, but is often used by collectors today to dinstinguish the late model 20 cathedral from the earlier version with a simple flat front on the cabinet.

Stein "Cathedral & Tombstone Radios" lists 6 tubes.

Source of data Collector's Guide to Antique Radios (6th edition)
Circuit diagram reference Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931)
Mentioned in Machine Age to Jet Age II
Literature/Schematics (1) Philco Radio 1928-1942 (Philco 1928-36 Wiring Diagrams, Parts Lists, and Essential Service Data)
Literature/Schematics (2) Cathedral & Tombstone Radios (page 191.)

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



All listed radios etc. from Philco, Philadelphia Stg. Batt. Co.; USA
Here you find 3737 models, 2110 with images and 3134 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.




  
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