Philco Transistor Radio Hacked into Smart Phone Speakers

after_philcoFor a number of years a 1942 Philco transistor radio was stored by a family member due to its assumed significance to a family friend. When it turned out that the radio was not historically important, and had been bought in the 90’s in a garage sale I was given the radio to “get it out of the way”. Below are before and after photos showing the original radio, and the modified radio that now plays music over a set of computer speakers stuffed into the old radio cabinet. I left the mechanics of the radio dial in place so turning the knobs moves the original radio tuner mechanism. To maintain the patina that the radio case has accrued over the past 70 years I only added a few coats of clear coat to preserve the original look.

According to philcoradio.com the specs for the original radio were:

Model 42-PT3

The new 42-PT3 featured a cabinet finished entirely in photofinish; underneath that fancy-looking tiger striped pattern is a very plain white wood. The 42-PT3 uses the same chassis as the June 1941 42-PT2.

Original selling price: $22.95

Number made: 42,465

before_insides_philco_speakers

The insides of the radio and the computer speakers salvaged from a previous project that will replace the transistor radio electronics.

Front of the radio with all of its "patina"

Front of the radio with all of its “patina”

Radio tubes

Radio tubes

Made in USA capacitor!

Made in USA capacitor!

Gutted radio with a few coats of clear coat

Gutted radio with a few coats of clear coat

Computer speakers shoved into the back side of the philco case. Most of the case is the old mechanica

Computer speakers shoved into the back side of the philco case. Most of the space in the case is the old mechanics for the radio dial.

Service diagram for the original radio

Service diagram for the original radio

 

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About Ryan

Ryan is currently a National Research Council Postdoctoral Research Fellow at the Air Force Research Laboratory. His research area includes Prognostic Health Management of Electronics. For more information please visit: www.rdlowe.com
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