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37-84B (37-84, 37-84A) Code 122 Early

37-84B Code 122; Philco, Philadelphia (ID = 502894) Radio
37-84B Code 122; Philco, Philadelphia (ID = 2169876) Radio 37-84B Code 122; Philco, Philadelphia (ID = 1218893) Radio
37-84B Code 122; Philco, Philadelphia (ID = 1218894) Radio 37-84B Code 122; Philco, Philadelphia (ID = 1218895) Radio
37-84B Code 122; Philco, Philadelphia (ID = 1218896) Radio 37-84B Code 122; Philco, Philadelphia (ID = 1218897) Radio
37-84B Code 122; Philco, Philadelphia (ID = 2161296) Radio 37-84B Code 122; Philco, Philadelphia (ID = 132666) Radio
37-84B Code 122; Philco, Philadelphia (ID = 132667) Radio 37-84B Code 122; Philco, Philadelphia (ID = 143973) Radio
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37-84B Code 122; Philco, Philadelphia (ID = 2169876) Radio
Philco, Philadelphia: 37-84B Code 122 [Radio] ID = 2169876 1000x1190
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For model 37-84B (37-84, 37-84A) Code 122 Early, Philco, Philadelphia Stg. Batt. Co.; USA:
Model 37-84 (not A or B) in original condition.
Country:  United States of America (USA)
Manufacturer / Brand:  Philco, Philadelphia Stg. Batt. Co.; USA
Year: 1936/1937 Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 4: 6J7G 6J7G 6F6G 5Y4G
Main principle Super-Heterodyne (Super in general); ZF/IF 470 kHz; Super, reaction, but not adjustable
Tuned circuits 3 AM circuit(s)
Wave bands Broadcast only (MW).
Power type and voltage Alternating Current supply (AC) / 115 Volt
Loudspeaker Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
Power out 0.5 W (unknown quality)
from Model: 37-84B Code 122 [Early] - Philco, Philadelphia Stg. Batt
Material Wooden case
Shape Table-Cathedral-Type (upright, round top or gothic arch, not rounded edges only).

Philco model 37-84B was the fourth and final generation (following models 80B, 81B, and 84B) of low cost 4-tube cathedrals that used a regenerative combined IF/detector stage in a superheterodyne circuit to maximize sensitivity with very few components.

Three versions of 37-84B are known: Code 121 uses a chassis with the old style tube lineup of the previous model 84B. The two versions of 37-84B code 122 use more modern octal tubes. While the standard versions of these chassis are for 50-60 Hz AC power, there was also a 37-84A chassis for 25-40 Hz power (probably available for both codes 121 and 122). Note that the -A suffix is a chassis suffix, not to be confused with the main model number -B suffix, which indicates cathedral cabinet.

The early version of code 122 has four vertical bars through the speaker opening. The late version has simple curvy lattice work in the lower part of the speaker opening. Code 121 has a cabinet similar to the late version of code 122, even though its tube lineup suggests it was chronologically first.

Price in first year of sale 20.00 $
Collectors' prices  
External source of data Ernst Erb
Source of data Collector's Guide to Antique Radios 4. Edition
Circuit diagram reference Rider's Perpetual, Volume 7 = 1936 and before
Mentioned in The Radio Collector's Directory and Price Guide 1921 - 1965
Literature/Schematics (1) Philco Radio 1928-1942 (Philco Service Bulletin # 244)
Literature/Schematics (2) Machine Age to Jet Age II (page 212.)
Literature/Schematics (3) Philco Folder No. PR-430 for 1937.
Literature/Schematics (4) Cathedral & Tombstone Radios (page 194.)

All listed radios etc. from Philco, Philadelphia Stg. Batt. Co.; USA
Here you find 3716 models, 2085 with images and 3097 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.


Forum contributions about this model
Philco, Philadelphia: 37-84B Code 122
Threads: 1 | Posts: 3
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philco: Code 122; 37-84B (37-84, 37-84A)
Jürgen Bauch

Ich hatte mein Philco 37-84A Code 122 unter Baujahr 1937 angelegt .Die Bilder sind jetzt bei Philco 37-84A Code 122 Baujahr 1936.

Muss ich mein 37-84A jetzt auch unter Baujahr 1936 einordnen ?

Für das Baujahr 1937 sind bisher noch keine Bilder hinterlegt !



Jürgen Bauch

Thomas Albrecht

Bei Philco sind das Modelljahr und das Baujahr nicht immer gleich.  Modelle mit Modellnummer 37-XX sind vom Modelljahr 1937, das von Juni 1936 bis Mai 1937 lief.

Es gab 2 Varianten von 37-84B Code 122.  Die "early" Variante wurde nur 1936 produziert, und die "late" Variante nur 1937.  Ihre Variante ist die "early" Variante.

Der Unterschied zwischen "early" und "late" hat nur mit dem Gehäuse zu tun.  Ihre Bilder zeigen die "early" Variante 37-84_code122_early .  Die "late" Variante hat das selbe Gehäuse wie 37-84_code121 .

Obwohl wir noch keine Bilder unter 37-84_code122_late (Baujahr 1937) haben, wären Ihre Bilder nicht richtig dafür.




A little more explanation in English:   There are three variants of the Philco model 37-84B cathedral radio.  Code 121 uses older tube styles, and the two versions (early and late) of Code 122 use octal tubes.  The difference between the early and late versions of Code 122 is the cabinet style.  Your pictures show the early cabinet style, with four vertical bars through the speaker grill.  The late version doesn't have four bertical bars, but instead has a small amount of curved lattice work at the bottom of the speaker grille.  The late version cabinet is in fact the same as the Code 121 cabinet (compare pictures at links above).

It may seem confusing that the cabinet of the late version of Code 122, which should have been the last version produced, is the same as the cabinet of the Code 121, which should have been the first version produced.  Nonetheless, the information we have suggests that this is indeed the case.

Finally, a word about the difference between the "model year" and the actual year of production for Philco.  The model year corresponds to the first two digits of the model number (this method was used by Philco from 1937 until the early 1950s).  So your 37-84B is from the 1937 model year.  However, the model year started in June of the previous year, and ended in May of the model year, so the 1937 model year spanned the time from June 1936 through May 1937.  For most models of the 1937 model year, you will see 1936/1937 shown as the year in RMorg.  However, in special cases like model 37-84B, where multiple versions were produced within a single model year, the actual year of production of each variant is shown.  That's why the 37-84B Code 122 Early is shown with just 1936.

By the way, the "B" suffix on the model number indicates a cathedral cabinet.  Often this was not marked on the radio or cabinet, but Philco sales literature uses this designation.  The "A" suffix shown on the chassis tag (but not on the cabinet tag) indicates a 25-40 Hz power supply (and sometimes also 220-240 volt).  In most cases, we do not show a separate model in RMorg for the "A" version chassis, but simply mention in the notes that such versions exist.

Best regards,


Jürgen Bauch


Hallo Herr Albrecht

Vielen Dank für die Antwort. Ich habe mein Philco 37-84B jetzt unter "early" eingeordnet.

Mit freundlichen Grüßen

Jürgen Bauch

Philco, Philadelphia: 37-84B Code 122
End of forum contributions about this model