De-Wald Model 440 "Universal" Mantel Radio (1934)
The Dewald "universal" model 440 was introduced to the
marketplace in early 1934. Dewald was the trade name
of Pierce-Airo Inc. of 520 6th Ave, New York City. One of
their advertising catch phrases was "Pacemakers in
radio since 1921".
The model 440 is a 4-tube ac/dc TRF receiver that
tunes the standard broadcast band from 550-1700kcs
(approx). Tube line-up is 6D6 (RF amp), 6C6 (2nd
detector/AF amp), 43 (AF output pentode) and 12Z3
(rectifier). A resistance line cord serves to establish the
correct filament voltages. The schematic may be found
here, courtesy of NostalgiaAir.
The cabinet consists of a wooden frame to which
repwood panels are attached. Repwood was formed by
pressing a special wood-paste into a mold to give the
intricate "carved" appearance.
marketplace in early 1934. Dewald was the trade name
of Pierce-Airo Inc. of 520 6th Ave, New York City. One of
their advertising catch phrases was "Pacemakers in
radio since 1921".
The model 440 is a 4-tube ac/dc TRF receiver that
tunes the standard broadcast band from 550-1700kcs
(approx). Tube line-up is 6D6 (RF amp), 6C6 (2nd
detector/AF amp), 43 (AF output pentode) and 12Z3
(rectifier). A resistance line cord serves to establish the
correct filament voltages. The schematic may be found
here, courtesy of NostalgiaAir.
The cabinet consists of a wooden frame to which
repwood panels are attached. Repwood was formed by
pressing a special wood-paste into a mold to give the
intricate "carved" appearance.
Copyright TubeRadioLand.com
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..4-tube high-gain universal. The biggest value ever packed into a midget radio set.
Note: inspection of the ad snippet above (click the thumbnail to enlarge it) reveals knobs that are different to the rosettes on my set. However, either the depiction in
the ad is incorrect (a surprisingly common occurrence) or the set came with two (or more) alternate knob styles. I have seen photos of at least two other examples of
this set, one from a collector in Spain, and both sport the same rosettes as mine. It may be mentioned that the knobs have small engraved dots as indicators rather
than actual pointers - one is just visible at the 8 o'clock position on the left knob in the lower right photo.
the ad is incorrect (a surprisingly common occurrence) or the set came with two (or more) alternate knob styles. I have seen photos of at least two other examples of
this set, one from a collector in Spain, and both sport the same rosettes as mine. It may be mentioned that the knobs have small engraved dots as indicators rather
than actual pointers - one is just visible at the 8 o'clock position on the left knob in the lower right photo.