Museum Hours:

Saturday 10-6

Sunday 12-5

Postwar American Television

UHF Converters

Our display

Many of these were donated by Mark Nelson

In the early 50s the FCC allocated channels 14-83 (470-890 mHz) for TV broadcasting. No sets had tuners that could cover those freqencies at the time, so external converters were sold. Thes devices did not have RF amplifiers, so their noise figure was terrible, and unless you lived near a UHF station they didn't work very well. Later, the FCC required all TV sets to be made with UHF tuners, but they generally didn't work very well, making reception of UHF channels difficult.

RCA Model B experimental 1948 converter used in Washington, DC field test

Converter used in RCA's Bridgeport, CT experiments

Donated by Chuck Azzalina


Electro-Voice 3300

Philco 200X


Electro-Voice 3300

Granco MTU

Blonder-Tongue 99

Blonder-Tongue U2B


Regency UHF Converter article

Stromberg Carlson model 1

Donated by Chuck Azzalina



Many of these converters were donated by Mark Nelson