General Radio Company - 603-A - Generator
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Equipment:
603-A
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Information
The Type 603-A Standard-Signal Generator is a general-
purpose instrument, designed to have the widest possible
application in the measurement of receiver characteristics
and transmitter field strengths. By means of easily
accessible plug-in coils, the range extends from 100 kc to
25 megacycles, making the instrument particularly adaptable
to the testing requirements of modern receivers operating in
the high-frequency as well as in the broadcast spectra.
The standard-signal generator, with no additional equipment,
is suitable for determining the sensitivity and selectivity
of a radio receiver and, when modulated by an external
audiofrequency oscillator, it may be used in measuring
over-all fidelity.
When used in connection with a radio receiver, an output
meter, and a antenna of known characteristics, the standard-
signal generator may be used in making field-strength
measurements.
PRINCIPLE OF OPERATION — The Type 603-A Standard-Signal
Generator consists, essentially, of a calibrated
radio-frequency oscillator designed specifically for high
stability and minimum frequency modulation. An additional
oscillator, operating at 400 cycles is included to modulate
the output of the radio-frequency oscillator.
Provision is made for determining the percentage modulation
and for adjusting accurately the radio-frequency output voltage.
1 Manual
Service and user manual
Manual type:
Service and user manual
Pages:
24
Size:
14.8 MB
Language:
english
Revision:
Manual-ID:
304-D
Date:
Quality:
Scanned document, all readable.
Upload date:
Dec. 30, 2016
MD5:
2a4de842-0855-c50c-17e0-a2044a83ad59
Downloads:
538