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General Radio 1900-A
Wave Analyzer
General Radio 1900-A Wave Analyzer

Available from 1963 to 1973

Catalog History
 Document Year Page
Catalog R 1963 14
Catalog S 1965 28
Catalog T 1968 30
Catalog U 1970 44
Catalog73 1973 60
(All manuals in PDF format unless noted otherwise)

The General Radio 1900-A Wave Analyzer was introduced in Catalog R (1963) and remained available through Catalog 1973.

The Type 1900-A Wave Analyzer is designed to measure and analyze electrical signals between 20 Hz and 54 kHz at bandwidths as narrow as 3 Hz. It has a built-in tracking generator whose frequency is synchronized with the analyzer frequency. This generator can be used as a source for bridges or networks, and the output can be measured with high selectivity to reduce noise and harmonics.

Applications include analyzing filters and frequency response of amplifiers or networks.

When coupled with a Type 1521-B Graphic Level Recorder, a permanent record of the spectrum of interest can be produced. The combination of 1900-A and 1521-B make up the Type 1910 Recording Wave Analyzer.

The 1900-A is a complex instrument but major components are housed in their respective shielded enclosures. These sub-assemblies are connected using RCA and Jones type connectors, simplifying service.


  • Frequency Range: 20 to 54,000 Hz
  • Accuracy of Calibration: ±(½% +5 Hz) up to 50 kHz;. ±1% beyond 50 kHz
  • Incremental Frequency Dial (ΔF): ±100 Hz. accuracy is ±2 Hz below 2 kHz, ±5 Hz up to 50 kHz
  • Selectivity: three bandwidths (3, 10, and 50 Hz) selected by switch
  • Input Impedance: 1 MΩ on all ranges
  • Input Voltage Range: 30 μV to 300 V full scale



Top View

Left View

Right View

Bottom View

Rear View