[G-E H-501X]
General Electric H-501X, 1940

Tube complement: 12A8GT mixer/oscillator, 12SK7 IF, 12SQ7 detector, 35L6GT audio output, 35Z5GT rectifier.

Approximately 8-3/4 inches / 222 mm wide.

The suffix X in the model number stands for Onyx, and refers to the cabinet color.  Nowadays we (or at least I) think of Onyx as meaning a very dark color, or black.  But it also means "having bands of different colors ... translucent or milky quartz," thus describing the appearance of this Beetle plastic cabinet.


[G-E H-520]
General Electric H-520, 1940

This one is of a brown Bakelite-like plastic that's very heavily mottled with different shades of brown and tan.  This particular model has pushbuttons ("Feathertouch Tuning" keys) for easy favorite-station selection.


[G-E H-520 back]
The H-520 has a beautiful molded plastic back, which encloses the loop antenna.


The "H-500" series was available in many different versions.  First, G-E made 'em in three colors: oak (mottled brown), onyx (Beetle plastic), and ivory.  Second, they came with and without pushbuttons.  Third, they were available with and without a built-in loop antenna (the G-E "Beam-a-Scope").  Fourth, there was a UL-approved version, or a relatively unsafe one with the AC line connected directly to the chassis.  The UL-approved version was probably sold only in those markets, such as Los Angeles, where local codes required it.  (There were two UL-approved versions, the later of which had a 'U' suffix rather than an odd-numbered model designation.)  I don't know the model numbers of versions without pushbuttons but with the built-in loop antenna.

G-E H-500 SERIES
MODEL NUMBERS
Without pushbuttonsWith pushbuttons
External wire
antenna
Built-in loopExternal wire
antenna
Built-in loop
OakNot UL approvedH-500 H-510H-520
UL approvedH-501
H-500U
 H-511
H-510U
H-521
H-520U
IvoryNot UL approvedH-500W H-510WH-520W
UL approvedH-501W
H-500UW
 H-511W
H-510UW
H-521W
H-520UW
OnyxNot UL approvedH-500X H-510XH-520X
UL approvedH-501X
H-500UX
 H-511X
H-510UX
H-521X
H-520UX



[From a G-E catalog]

Here's a G-E catalog page that lists some of the model numbers from the chart above.



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