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1215-B: Difference between revisions
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|summary=Unit Oscillator | |summary=Unit Oscillator | ||
|image=GR 1215-B Close-Up.jpg | |image=GR 1215-B Close-Up.jpg | ||
|caption=General Radio 1215- | |caption=General Radio 1215-B Unit Oscillator | ||
|series=1215 | |series=1215 | ||
|introduced=1956 | |introduced=1956 | ||
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{{Catalog History}} | {{Catalog History}} | ||
}} | }} | ||
The {{Title|General Radio 1215- | The {{Title|General Radio 1215-B Unit Oscillator}} was introduced in {{Catalog O}} and remained available through {{Catalog Q}}. | ||
The Type 1215-B is a general-purpose frequency source covering 50 to 250 MHz. Its an updated version of the [[1215-A]], most of the improvements are mechanical. It finds use as a generator for bridges, admittance meters, and impedance meters. By the use of the [[butterfly circuit|"butterfly" tuning arrangement]] and lack of sliding contacts, the oscillator is compatible with most sweep devices. 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 1215-B is a general-purpose frequency source covering 50 to 250 MHz. Its an updated version of the [[1215-A]], most of the improvements are mechanical. It finds use as a generator for bridges, admittance meters, and impedance meters. By the use of the [[butterfly circuit|"butterfly" tuning arrangement]] and lack of sliding contacts, the oscillator is compatible with most sweep devices. 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. | ||