RCA Model T10-1 Tombstone Radio (1935/36)
This handsome RCA-Victor model T10-1 tombstone radio
was introduced in the summer of 1935 for the 1936 model
year. With 10 tubes, it was the company's top of the line
table set for the year, with an original list price of $99.50.
This was one of the first RCA sets to employ the new metal
tubes, introduced in April of 1935. Three of them were used
in the set's updated "Magic Brain" (a 6K7 RF amp, 6L7 mixer
& 6J7 LO). Contrast this with the two-tube Magic Brain (6D6
& 6A7) used a year earlier for models 128 and 143. The
set's only non-metal tube is a 5Z3, and perhaps to disguise
it, it was shrouded by a black metal can (see rear right).
When the metal tubes were first introduced, production
problems limited their availability. The issues were well
publicized, especially by competitors who refused to adopt
the new tubes (most notably Philco). RCA went on the
defensive in their advertisements, imploring radio buyers to
"be patient with your dealer if he can't make immediate
delivery of the Metal Tube Radio Set you want. His orders
on the factory are being filled as rapidly as possible".
The T10-1 is a ten-tube three-band superhet, with coverage
from 540 - 1800kcs (Band A), 1800 - 6000kcs (Band B) and
6000 - 18000kcs (Band C). The tube line-up is 6K7 (RF
amp), 6L7 (1st detector), 6J7 (LO), 6K7 (IF amp), 6H6
(2nd-detector/AVC), 6C5 (1st AF), 6C5 (AF driver), 6F6*2
(push-pull output) and 5Z3 (rectifier). Audio output is 8.5W
("undistorted") or 11.5W ("maximum") into an 8" Electro-
dynamic loudspeaker. Schematic.
The new RCA Victor 1936 Magic Brain Radio... with the new metal tubes.
|10-tube Model T10-1
New magic Brain - Metal Tubes - 540-18,000kcs - US and foreign - police,
aircraft and amateur calls - Automatic-Volume-Control and Tone Compensation -
111/2 Watts output - new ColorBand Dial - Band Spreader - Exquisite cabinet of
selected Mahogany and Sapele Veneers.
|Metal Tubes - The Sign of an Up-To-Date Radio!
1935 goes down in radio history as offering a new, revolutionary and permanent improvement - Metal Tubes - already adopted by the vast majority of radio
manufacturers. Progress cannot be stopped! Get what you want - a new radio - a MODERN radio - a radio with Metal Tubes!
|"Metal Tube radios are quieter, more sensitive,
better toned, superior in every way"