The N9910X-500 is a retractable whip antenna accessory for the FieldFox handheld RF analyzer series, operating from 70 MHz to 1000 MHz with Type N male connector. It extends the measurement capabilities of FieldFox analyzers—instruments designed for field testing and maintenance of RF and microwave systems—enabling spectrum analysis, cable and antenna analysis, vector network analysis, and power measurements across multiple frequency bands.
Technical Specifications
• Antenna Type: Retractable Whip
• Frequency Range: 70 MHz to 1000 MHz
• Connector: Type N (male)
The N9910X-500 integrates with FieldFox analyzers that support cable and antenna analysis with return loss and distance-to-fault (DTF) measurements, spectrum analysis from 100 kHz (usable to 5 kHz depending on configuration), and vector network analysis from 2 MHz to 4 GHz or 6 GHz depending on instrument model.
– Key Features
• Compact Design: Retractable form factor for portable field deployment
• Wide Coverage: Single antenna covers UHF and lower microwave bands in one accessory
• Standard Interface: Type N male connector ensures compatibility with most FieldFox configurations
– Typical Applications
• UHF antenna performance verification
• Portable RF system troubleshooting and maintenance
• Field cable integrity assessment
• Spectrum monitoring in the 70 MHz–1 GHz band
• EMI/RFI surveys requiring mobile instrumentation
– Compatibility & Integration
The N9910X-500 is part of the FieldFox accessory ecosystem. Compatible FieldFox models support optional GPS receivers (Option 307), variable-voltage DC bias sources (Option 309, +1 V to +32 V, max 0.65 A, 7 W), and iOS remote control (Option 030). Additional accessories include phase-stable cables, external antennas, rechargeable Li-Ion batteries, and AC/DC power adapters.


















