Singer SG-1000 Signal Generator SG-1001 Frequency Extender 248-512 MHz RF

Singer SG-1000 Signal Generator SG-1001 Frequency Extender 248-512 MHz RF

The Singer SG-1000 is a benchtop RF signal generator produced by Singer's Instrumentation Division in Bridgeport, Connecticut. This listing includes the SG-1000 main unit and the companion SG-1001 Frequency Extender, which mounts alongside it as an integrated system. The SG-1000's fundamental oscillator tunes from 248 MHz to 512 MHz; the additional frequency ranges are derived by dividing the fundamental by successive factors of two, extending coverage into the lower UHF and VHF bands.

Specifications & What's Included

• Model: Singer SG-1000 Signal Generator
• Companion unit: Singer SG-1001 Frequency Extender
• Fundamental oscillator range: 248 MHz to 512 MHz
• Additional ranges: divide-by-2 stages extend coverage below 248 MHz
• Front panel: Range and Frequency tuning controls, dBm output level control, output metering, multiple toggle switches and level/modulation controls
• Rear panel: AC power inlet, F1 1 Amp Delay fuse, lamp relay connector
• Manufacturer: The Singer Company, Instrumentation Division, Bridgeport, Connecticut — Made in USA
• Overall dimensions: 23" W x 17" D x 5" H (combined unit)
• What's included: SG-1000 Signal Generator main unit and SG-1001 Frequency Extender

Applications

The Singer SG-1000 is a vintage UHF/VHF bench signal generator from the 1960s–1970s era of Singer's Instrumentation Division, a period when Singer was a significant supplier of electronic test equipment to military, aerospace, and commercial communications labs. Signal generators of this type were used to inject known RF signals into receivers, amplifiers, and transmission line systems for alignment, troubleshooting, and performance characterization. The 248–512 MHz fundamental range with divide-by-2 extensions made the SG-1000 useful across VHF and UHF spectrum, covering frequency bands relevant to communications, radar, and electronic warfare test work of that era. Today, units like this are sought by vintage test equipment collectors, electronics historians, and engineers maintaining or restoring legacy RF systems that require period-appropriate instrumentation.