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The {{Title|General Radio 1800-B Vacuum-Tube Voltmeter}} was introduced in {{Catalog O}} and remained available through {{Catalog Q}}. | The {{Title|General Radio 1800-B Vacuum-Tube Voltmeter}} was introduced in {{Catalog O}} and remained available through {{Catalog Q}}. | ||
The Type 1800-B is a high impedance, high frequency voltmeter, an updated version of the [[1800-A| | The Type 1800-B is a high impedance, high frequency voltmeter, an updated version of the [[1800-A|1800-A Vacuum-Tube Voltmeter]] with improved power supply, including a two-stage voltage regulator, and updated with the new GR-874 probe adapter. | ||
Two range extension accessories were available, the Types [[1800-P2|1800-P2 High-Frequency Multiplier]], and the [[1800-P3|1800-P3 Low-Frequency Multiplier]]. | Two range extension accessories were available, the Types [[1800-P2|1800-P2 High-Frequency Multiplier]], and the [[1800-P3|1800-P3 Low-Frequency Multiplier]]. |
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