874-D20: Difference between revisions
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|image=GR 874-D20 Close-Up.jpg | |image=GR 874-D20 Close-Up.jpg | ||
|caption=General Radio 874-D20 Adjustable Stub | |caption=General Radio 874-D20 Adjustable Stub | ||
|series=874 | |series=GR-874 | ||
|introduced=1951 | |introduced=1951 | ||
|discontinued=1961 | |discontinued=1961 | ||
Latest revision as of 19:13, 25 July 2024
The General Radio 874-D20 Adjustable Stub was introduced in Catalog M (1951) and remained available through Catalog Q (1961).
The Type 874-D20 Adjustable Stub is used for matching or tuning, and use as reactive elements. Can be used with indicator and scale as reaction-type wavemeters. The stub consists of a sliding short circuit with multible-spring-finger type. The stub is operated by a baklite tube marked in centemeters.
The Type 874-D20 is similar to both 1602-P1 and 1607-P1 used with 1602-B Admittance Meter and 1607-A Immittance Bridge. The main difference is the markings on the bakelite tube. These device are matched to their respective instruments and share their serial numbers.
Specifications
- Characteristic Impedance: 50 Ω
- Maximum Travel: 20 cm
- Minimum Setting: 6 cm
