250-920 MHz Oscillator-- with Manual General Radio Type 1209-B

Description

The Type 1209-B Oscillator is a general-purpose radio-frequency source covering the ranges of 250-920 Mc.  The unit can be used to drive bridges, slotted lines, impedance comparators, and other measuring equipment. Used with a voltmeter and attenuator, it can provide accurately known output voltages for the testing of receivers. Direct amplitude modulation is possible over the audio-frequency range, and amplitude modulation free from incidental FM can be obtained with a simple crystal-diode modulator from zero to 5Mc.  Connected to a mixer, the Oscillator can be used as the local oscillator in a heterodyne receiver to convert the Type1216-A  I-F detector. Pulsing and linear 100-percent amplitude modulation can be obtained with an external balanced modulator.
The Oscillator requires an external power supply for operation such as the General radio 1201B.
Working 9 Mar 2021.
The unit was test run with a 1201-B power supply for several hours.  Sold
AS-IS
.
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