1208-B: Difference between revisions

1208-B (view source)

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 The {{Title|General Radio 1208-B Unit Oscillator}} was introduced in {{Catalog O}} and remained available through {{Catalog Q}}.
-The Type 1208-B is a general-purpose frequency source covering 65 to 500 MHz. Its an updated version of the [[1208-A]], most of the improvements are mechanical. It finds use as a generator for bridges, admittance meters, and impedance meters. By the use of sliding contacts in the oscillator circuit, sweep must be limited duty and slow speeds. In combination with an [[874-GA|874-GA Attenuator]], an [[874-VR|874-VR Voltmeter Rectifier]], and an [[874-VI|874-VI Voltmeter Indicator]] it provides an accurately known output voltage for receiver testing.
+The Type 1208-B is a general-purpose frequency source covering 65 to 500 MHz. Its an updated version of the [[1208-A]], most of the improvements are mechanical. It finds use as a generator for bridges, admittance meters, and impedance meters.
+In combination with an [[874-GA|874-GA Attenuator]], an [[874-VR|874-VR Voltmeter Rectifier]], and an [[874-VI|874-VI Voltmeter Indicator]], the 1208-B provides an accurately known output voltage for receiver testing.
+Because the oscillator circuit employs sliding contacts, sweep must be slow and of limited duty.
 Direct amplitude modulation at audio frequencies is introduced at a front panel jack. With a [[1000-P6|1000-P6 Crystal Diode Modulator]] accessory, modulation from 0 to 20 MHz is possible that is essentially free of FM.