SF-108 Signal Finder
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SF-108 Signal Finder
Device Designation: SF-108
Manufacturer: TRQ Applied Technologies
Certification: Field-certified by LangSec Dynamics under the EMCON Recon Toolset Program
Catalog Reference: Equipment Catalog, Item No. SF-108-077
Nickname: “Rover”
Operational Summary
Developed by TRQ Applied Technologies and field-certified by LangSec Dynamics, the SF-108 Signal Finder—designated Rover in SERA documentation—is a compact, passive electromagnetic detection unit engineered for close-quarters reconnaissance and sensor interdiction. It is capable of standard amplitude-based signal detection across a wide frequency range, but its real advantage lies in its advanced phase-shift analysis. This capability enables the SF-108 to detect stealth-mode electronics that operate below typical noise thresholds—devices designed to avoid conventional RF profiling by minimizing power signatures or avoiding transmission altogether.
The unit supports multi-mode scanning, including wideband sweep, burst-phase trace, and directional signal confirmation. An internal signature discrimination system allows operators to suppress alerts from known SERA-issued equipment, reducing interference from mission-critical gear such as translators, repeaters, and vision systems. Enclosed in a fully shielded, emissions-controlled housing, the SF-108 features zero RF leakage, silent haptic alerts, and a rugged LED signal array for discreet visual feedback. Compact, field-rugged, and programmable for dynamic operational needs, it is standard issue for SERA teams operating in signal-contested terrain, subterranean structures, or any environment where hostile electronic systems are likely to be concealed.
Core Capabilities
Passive Electromagnetic Detection
– Detects emissions from powered electronics, including those operating in silent, sleep, or standby states
– Measures both amplitude and phase-based anomalies to locate stealth systems and dormant tech
– Capable of detecting oscillator drift, PLL harmonics, and low-level EM bleed from modern microelectronics
Multi-Mode Signal Sweep
– Supports wideband scan, burst-phase trace, and directional targeting
– Track Mode enables guided movement toward signal sources
– Vector Sweep allows area mapping with directional feedback for source isolation
Phase-Based Stealth Detection
– Detects cloaked electronics not visible to amplitude-only RF gear
– Effective against embedded sensors, digital traps, and quiet surveillance nodes
Adaptive Signal Discrimination
– Ignores emissions from SERA-issued gear via preloaded signature library
– Filters out friendly repeaters, translators, night vision systems, and comm gear
– Can locate known registered devices during recovery ops
EMCON Compliance
– Zero-emission operation under stealth mode
– Fully shielded housing blocks signal leakage
– Manual EMCON override disables all vibration and LED output
Field Interface & Alert System
– Multi-stage haptic alerts for signal proximity
– 7-bar LED signal arc (active in non-EMCON mode)
– Optional low-volume audio ping (off by default)
– Single-button interface for gloved operation: scan mode toggle, target mark, EMCON control
Detection & Signal Profile
Frequency Sensitivity:
– Detects emissions from 32 kHz to 5.0 GHz
– Tracks everything from low-speed timing circuits to modern high-frequency processors
Detection Range:
– Unshielded active devices: up to 15 meters
– Low-power or partially shielded electronics: 5–10 meters
– Stealth-phase targets (standby/dark mode): 2–5 meters, depending on environmental noise
Directional Capability:
– Active in Track Mode and Vector Sweep
– LED arc and haptic feedback dynamically shift toward strongest signal vector
– Designed for use in cluttered, shielded, or subterranean environments
Signal Resolution:
– Phase-detection precision: sub-3° phase variance
– Amplitude floor: –110 dBm (standard), –130 dBm (sensitive mode)
Error Handling:
– Dynamic noise floor calibration (every 30 seconds)
– Alerts operator in high-EMI environments
– Auto-squelch suppresses transient interference
Power & Runtime
Battery:
– Internal LiFePO₄ rechargeable cell (field-replaceable cartridge)
Runtime:
– Active Detection: 24 hours
– Passive Tracking: 72+ hours
– Intermittent Signal Trace: 5+ days
Charging & Ports:
– USB-C (sealed port)
– Magnetic cradle dock
– 4-pin proprietary LangSec connector for data sync and firmware updates
Power Management:
– Auto-sleep after 5 minutes idle
– Cold Start: < 2.5 seconds to full scan
– Warm Start: < 0.5 seconds on button press or motion tap
– In EMCON, passive lock engages after 10 minutes but wakes instantly on input
Physical Specifications
• Dimensions: 95mm x 65mm x 22mm
• Weight: 160g (5.6 oz)
• Housing: Matte-black polycarbonate shell with embedded RF shielding
• Ingress Protection: IP67 – water-resistant (1m/30min), dust-sealed, drop-rated to 2 meters
• Operating Temp: –30°C to +55°C
• Impact Resistance: MIL-STD-810H rated
• Mounting Options: Rear plate supports MOLLE clip channel and forearm strap slot
Data Handling & Security
• Logs up to 10 flagged signal events with timestamp and basic EM signature profile
• Stored traces include frequency spread and phase anomaly profile for post-op review
• Data accessible only via secure cradle; no in-field access during mission
• Includes manual zero-data wipe under rear access panel—clears all logs and disables active firmware
• GPS logging disabled by default and fully suppressed in EMCON mode
Deployment Notes
• Standard kit for all SERA forward teams during entry sweeps and embedded tech reconnaissance
• Used during The Last Echo to isolate passive surveillance fields embedded in jungle terrain and buried infrastructure
• Effective in hardened, signal-contested environments including urban ruins, subterranean corridors, and coastal bunkers
• Capable of locating concealed digital threats before activation and recovering dropped gear via signature trace
• Not effective against purely analog circuits without powered components or EM leakage
Deployment History
- The Last Echo
- The Bone Road