Overview
The SOAR Corporation FC-851 is a portable frequency counter engineered for measurement and analysis of RF signals in the 455KHz region and related frequency bands. Built by SOAR Corporation, a Japanese manufacturer specializing in compact test instruments, this counter combines portable design with straightforward operation, making it a practical tool for technicians, engineers, and hobbyists working with RF circuits and communications equipment.
Key Features
- Compact, portable form factor suitable for bench or field use
- BNC input connector compatible with standard scope probes and RF sources
- Optimized for 455KHz intermediate frequency applications
- Simple front-panel operation with range switching
- Battery and AC adapter power options for flexible deployment
Technical Specifications
The FC-851 features a digital display with gate switching for measurement at multiple frequency ranges. Like other SOAR frequency counters in this series, the unit provides resolution appropriate for IF measurement and general RF troubleshooting. Power supply accepts both AC adapter (6–12V) and standard battery cells.
Typical Applications
- 455KHz IF alignment and measurement in radio receivers
- CB radio frequency verification and repair
- Amateur radio equipment testing and tuning
- General RF circuit troubleshooting in communications gear
- Laboratory bench frequency measurement
Compatibility & Replacements
Compatible With
- Standard BNC RF probes and connectors
- 6–12V AC power adapters
- Standard battery cells (UM-3 or equivalent)
- RF circuits and receivers operating in the kHz to MHz range
Replaces / Drop-In Replacement For
Verify compatibility with your technician or system integrator before ordering. SOAR frequency counter models in the FC-8xx series share similar form factors and may have overlapping capabilities; consult original documentation to confirm direct replacement suitability.
Works With
- Standard RF test probes and measurement cables
- Common laboratory power supplies and battery packs
- Any RF signal source with BNC connector interface
- Vintage and modern radio equipment requiring 455KHz measurement
