Holmes Miller Radio

Holmes C. Miller Radio
Manufactured in Palo Alto, California
Another example of Silicon Valley's technical heritage

Circuit type: regenerative detector
Number of tubes: 2, types 24A and 27 [possibly!]
Size: 20"w x 8"h x 10"d -- Weight: 40 lbs.
Frequency Range: 2 - 30 MHz -- No. of plug-in coils: 8
Manufacturer: Holmes C. Miller, Engineer -- Location: Palo Alto, California
Original Price: $??? -- Original Date: c.1930

Photo of Holmes Miller Radio
CONTROLS LEFT TO RIGHT: input tuning -- band tuning -- beat note -- band selector -- regeneration potentiometer -- on/off

top view -- hinged metal shield open

top view -- close up of shielded compartment

CU of name tag
receiver name tag
Photo of plug-in coils

one of eight coils
wound on a
REL #182S-BCD
coil form
shown seated
in a spare
REL #183
base.

Circuit of Holmes Miller Radio

This remarkable regenerative detector radio may be one of the earliest
commercial shortwave-only receivers made. All RF components are the finest
available in the late 1920s and are shielded in a thick steel compartment.
It has a rather elaborate two-tube circuit for which I have not found an
equivalency in textbooks of that era. It may be an unpublished,
proprietary circuit design of Mr. Miller.

I am looking for any information regarding Mr. Holmes C. Miller, his company,
his radios, and other products. To date, his only advertisement I have found
is in the December 1930 issue of QST magazine as shown below.