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20 (20B) Baby Grand Cathedral, early

20 Baby Grand; Philco, Philadelphia (ID = 380421) Radio
 
20 Baby Grand; Philco, Philadelphia (ID = 380422) Radio
 
20 Baby Grand; Philco, Philadelphia (ID = 380423) Radio
 
20 Baby Grand; Philco, Philadelphia (ID = 380420) Radio
 
20 Baby Grand; Philco, Philadelphia (ID = 489097) Radio
 
20 Baby Grand; Philco, Philadelphia (ID = 489098) Radio
20 Baby Grand; Philco, Philadelphia (ID = 2318744) Radio 20 Baby Grand; Philco, Philadelphia (ID = 2318745) Radio
20 Baby Grand; Philco, Philadelphia (ID = 2318747) Radio 20 Baby Grand; Philco, Philadelphia (ID = 2318743) Radio
20 Baby Grand; Philco, Philadelphia (ID = 116840) Radio 20 Baby Grand; Philco, Philadelphia (ID = 134611) Radio
20 Baby Grand; Philco, Philadelphia (ID = 134613) Radio 20 Baby Grand; Philco, Philadelphia (ID = 134614) Radio
20 Baby Grand; Philco, Philadelphia (ID = 353316) Radio 20 Baby Grand; Philco, Philadelphia (ID = 353317) Radio
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20 Baby Grand; Philco, Philadelphia (ID = 2318744) Radio
Philco, Philadelphia: 20 Baby Grand [Radio] ID = 2318744 1400x1050
Select picture or schematic to display from thumbnails on the right and click for download.
For model 20 (20B) Baby Grand Cathedral, early, 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, early] - 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 17.5 x 10 inch / 406 x 445 x 254 mm
Notes

Philco's first "cathedral" type cabinet. One dial (primary tuning control knob).

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.

Stein "Cathedral & Tombstone Radios" lists 6 tubes.

Net weight (2.2 lb = 1 kg) 12.5 kg / 27 lb 8.5 oz (27.533 lb)
Price in first year of sale 49.00 $
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)
Mentioned in Collector's Guide to Antique Radios 4. Edition
Literature/Schematics (1) Machine Age to Jet Age II (Philco 1928-36 Wiring Diagrams, Parts Lists, and Essential Service Data)
Literature/Schematics (2) Cathedral & Tombstone Radios (page 191.)


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.



 


Forum contributions about this model
Philco, Philadelphia: 20 Baby Grand
Threads: 1 | Posts: 6
Hits: 3458     Replies: 5
philco: 20;
Paul E. Pinyot † 2013
03.Jun.05
  1 Gentleman administrator,

I believe that the pictured Philco Model 20 is a "Deluxe" model as indicated on http://archives.radioattic.com/archive_p1.htm.  I discovered this while I tried to figure out how to upload information on my most recent restoration, a Model 20 (non-deluxe model). 

If some one would be so kind as to help me figure out how to contribute a picture and information for a standard Philco model 20 I would be appreciative.

Please see http://www.ppinyot.com/philco20/philco_20.htm for additional images and a restoration story.

Thanks,
Paul

Attachments

Omer Suleimanagich
03.Jun.05
  2 Show off!

Just kidding!

It looks great and I love your documentation!

Keep up the good work!

When will you start working on a Telefunken Opus?

Omer
Mario Coelho
03.Jun.05
  3

Hello Paul,

Gongratulations for your Radio and for your work.

Passing by the 6th edition of "Collector's Guide to Antique Radios" Book I could read that there are, at least, three Philco 20's models:

1 - Console - (wood)
2 - Cathedral- (wood)
3 - Deluxe Cathedral- (two-tone wood),

and one Philco 20B   Cathedral - (wood)

Best Regards

Mário

Konrad Birkner † 12.08.2014
03.Jun.05
  4 Hi Paul,

the models have been corrected now.

You may upload Photos(max.120 kByte each) by clicking at the model 20 page bottom left "add info", then follow the procedure.
To enhance model page content click at bottom center/right "suggest change" and follow the procedure.

Good luck!

KoBi
Paul E. Pinyot † 2013
04.Jun.05
  5  
Konrad,

I hope you kept the Philco 20 deluxe picture.  I could not locate it in the radios section of the web (could be my unfamiliarity with the site). It is a pretty picture.  And from what I have read the Deluxe model is considered a Philco 20.  It has a nicer architecture on the cabinet.

I have uploaded the picture of the aforementioned radio.  I captioned it as restored.  Please feel free to properly edit what Model 20 information that I upload for accuracy and web site conformity.

Thanks,
Paul


Omer,

Thanks for the compliment. I want to restrip it and try to better match the veneer color and some of the filled areas.  I am a rookie at wood finishing. 

The Grundig 3034 is on deck.  On the bench is an H500 Transoceanic "Parts Radio" that I did not have the heart to break up.  I purchased this in Kutztown, Pennsylvania vintage radio swap meet for 20 bucks ($) for the antenna.  Unfortunalty the rest of the radio came with it :~)

It has a 1U5 in place of the 1S5 and looks like it was a factory mod.  The 1U5 has identical performance (except for some element capacitance and pin out).  Now I want to find confirmation as in "documented".

The inside lable indicates the 1U5 on the tube layout.  I would like to cross reference this to some note or revision on a published schematic.

Untill then I am repairing the chewed fabric wiring by replacement or heat shrink tubing, shotgun replacement of molded wax/paper & eletrolytic capacitors and drifted resistors.  One of the coils was chewed also and I have a replacement comming.

Oops - I suppose I should talk about this in the appropriate location.

Sir Moderator - should I edit and move this topic?


Thanks again,
Paul.


EDIT - I found the picture and the listing for the 20 deluxe.
Konrad Birkner † 12.08.2014
04.Jun.05
  6 Paul,
You did a good start with the photo.
To add information just suggest a change.
Should anything appear unclear or unsuitable to an admin, he will ask You or refuse the item. Thats all.
Thank You
KoBi

Note: I would never cancel a good image, provided it can be allocated. In our case the photo was moved.
 
Philco, Philadelphia: 20 Baby Grand
End of forum contributions about this model

  
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