Just as the test and measurement
equipment manufactures scrambled to produce lines of spectrum, network and communications
analyzers, oscilloscopes, power meters, electromagnetic field sensors, and many
other types of products specifically for the cellphone and Wi-Fi industries, companies
were scrambling to provide for the needs of FM radio and television development
labs and production lines. This 1947 advertisement from Radio Corporation of America
(RCA) Test & Measuring Equipment division is an example that appeared in a 1947
issue of Radio News magazine. In fact, TV was
so new that just a few months later, in
September of 1948, editor Hugo Gernsback
changed the publication's name to Radio & Television News.
BTW, did you even know RCA made test equipment? It shows up on
Designed for the Better Service Shop ...
RCA's New FM Sweep Generator ... third unit of a revolutionary new line
Provides every signal you need for fast, accurate FM alignment
The WR-53A removes the last element of doubt from FM receiver alignment ... regardless
of bandwidth requirements. You bring the recognized advantages of the sweep method
of alignment to every FM job - speed, accuracy, and reliability that add up to a
perfect job every time, in less time.
It's packed with features to make your work easier. Here's a quick check list:
... i-f center frequency; 8.3 to 10.7 mc ... adjustable i-f sweep width ... internal
and external frequency modulation ... rf range continuously variable from 85 to
110 mc ... provides AM or c-w signals ... includes step and fine attenuators ...
a scope phase control permits centering of sweep patterns.
With the i-f sweep section, you can align i-f stages by the variable-frequency
or visual method. When used with an oscilloscope or VoltOhmyst, you can quickly
adjust an FM discriminator circuit by either the visual or single-frequency method.
Alignment of r-f, local-oscillator, ratio-detector, and mixer circuits all become
simple, routine jobs.
Here's an instrument that's comparable in performance yet half the price of similar
laboratory-type equipment. It's a "natural" for the receiver manufacturer's laboratory
as well as the radio service shop.
A new bulletin is yours for the asking. Keep in touch with your RCA Test Equipment
On The Way - a superior line of test equipment that puts time-consuming service
jobs on a profitable, production-line basis ... that anticipates all FM and television
needs. Matched styling of all instruments permits attractive, convenient grouping.
Watch for announcements of the other units in this new line.
Test and Measuring Equipment
Radio Corporation of America
Engineering Products Department, Camden, N.J.
In Canada: RCA Victor Company Limited, Montreal
Posted July 15, 2022
(updated from original post on 8/26/2015)