874-VR: Difference between revisions
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{{GR Product | |||
|model=874-VR | |||
|codes=COAXRECTOR,0874-9942,0874-9943 | |||
|class=coaxial components | |||
|summary=Voltmeter rectifier | |||
|image=GR 874-VR-1.jpg | |||
|caption=General Radio 874-VR | |||
|series=GR-874 | |||
|introduced=1951 | |||
|discontinued=1973 | |||
|designers= | |||
|manuals= | |||
* [[Media:GR-0874-0213-D 1963-11 874-VR-Manual.pdf|874-VR Manual 0874-0213-D (1963)]] | |||
{{Catalog History}} | |||
}} | |||
The {{Title|General Radio 874-VR}} is a "voltmeter rectifier" with two [[GR-874 connector]]s for the signal, and another GR-874 connector for the rectified output. | |||
It was introduced in {{Catalog M}} and remained available through {{Catalog 1973}}, after which only the [[874-VRL]] version with locking connectors remained in the catalog. | |||
The 874-VR is used in frequency-response measurements with a [[1750-A|1750-A Sweep Drive]] and [[1263-C|1263-C Amplitude Regulating Power Supply]]. | |||
An [[874-VI|874-VI Voltmeter Indicator]] can be used for calibrated measurements from 0.1 to 2 V. | |||
It contains a 1N23B diode and a mica capacitor. | |||
The [[874-VQ]] is similar to the 874-VR, but omits the 874-VR's 50 Ω series resistor, and includes matching elements to compensate for the discontinuity caused by the diode capacitance. | |||
==Key Specifications== | |||
* Frequency range: 15 MHz to 2.5 GHz (correction required above 1 GHz) | |||
* Input: 0.1 V to 2 V | |||
* VSWR: ≤1.1 @ 1 GHz, ≤1.2 @ 2 GHz; rising rapidly above 2.5 GHz | |||
* Resonant frequency: 3.8 GHz | |||
==Links== | |||
* [[874-VRL]] is the locking version. | |||
* [[Media:1N Series Microwave Diode Data Sheet.pdf|1N23B Microwave Diode Data]] | |||
==Photos== | |||
<gallery> | |||
GR 874-VR-1.jpg | |||
GR 874-VR Front A.jpg | |||
GR 874-VR Front.jpg | |||
GR 874-VR Rear.jpg | |||
GR 874-VR Open.jpg | |||
GR 874-VR 1N23B.jpg | |||
</gallery> | |||
[[Category:Coaxial Elements]] | [[Category:Coaxial Elements]] | ||
[[Category:GR-874]] | |||
Latest revision as of 16:24, 9 May 2024
The General Radio 874-VR is a "voltmeter rectifier" with two GR-874 connectors for the signal, and another GR-874 connector for the rectified output. It was introduced in Catalog M (1951) and remained available through Catalog 1973, after which only the 874-VRL version with locking connectors remained in the catalog.
The 874-VR is used in frequency-response measurements with a 1750-A Sweep Drive and 1263-C Amplitude Regulating Power Supply. An 874-VI Voltmeter Indicator can be used for calibrated measurements from 0.1 to 2 V.
It contains a 1N23B diode and a mica capacitor.
The 874-VQ is similar to the 874-VR, but omits the 874-VR's 50 Ω series resistor, and includes matching elements to compensate for the discontinuity caused by the diode capacitance.
Key Specifications
- Frequency range: 15 MHz to 2.5 GHz (correction required above 1 GHz)
- Input: 0.1 V to 2 V
- VSWR: ≤1.1 @ 1 GHz, ≤1.2 @ 2 GHz; rising rapidly above 2.5 GHz
- Resonant frequency: 3.8 GHz
Links
- 874-VRL is the locking version.
- 1N23B Microwave Diode Data
