SpectraSentry

Tactical Skanner

A macOS ARM64 spectrum analyzer and paranormal investigation suite built for real fieldwork. From RF analysis and TSCM counter-surveillance to Skinwalker Ranch anomaly monitoring and EVP detection.

Early Alpha macOS ARM64 C++17 / Qt6
Companion app: SpiritBox Investigation Command Center — Shares EMF drivers, audio demodulation, USB discovery. IPC bridge for cross-sensor correlation.
Two Integrated Applications

SpectraSentry Tactical Skanner

High-resolution spectrum analyzer with 60fps waterfall spectrogram, SDR radio with vintage Sangean-style dial, multi-device hardware support, audio/EVP monitoring, frequency generation, TSCM rogue device detection, and investigation profile system.

SpectraSentryOmeter

Environmental BLE sensor monitor. Tracks temperature, EMF, barometric pressure, and humidity via Bluetooth sensors. Detects paranormal-range anomalies (sudden temperature drops, EMF spikes). Cross-correlates environmental events with RF anomalies via IPC bridge.

Core Features

Spectrum Analysis

60fps waterfall spectrogram with bthl-cosmic color gradient. 2D multi-trace spectrum analyzer (live, max-hold, average, reference). 3D surface plot with wireframe overlay. Live oscilloscope trace. SVG vector export. HiDPI and pop-out multi-monitor support.

SDR Radio

Vintage Sangean-style AM/FM dial interface. 6 demodulation modes: Wideband FM, Narrowband FM, AM, USB, LSB, CW. 20 presets including 7 NOAA weather stations, aviation, marine, ham, ISM, and ADS-B. FM auto-seek scanner with squelch. RTL-SDR E4000 tuner support.

Audio & EVP Monitoring

Real-time PCM waveform from system microphone. 64-band FFT frequency analysis. Infrasound 19 Hz “fear frequency” detection. dB-calibrated peak and RMS meters. 1x-64x waveform zoom. 16/24-bit WAV recording with alert-triggered capture and 1GB warnings.

Frequency Generation

7 waveform types: sine, square, triangle, sawtooth, white noise, pink noise, binaural. 9 Solfeggio presets (174-963 Hz). Schumann resonance (7.83 Hz) with binaural beat mode. Brainwave entrainment (Theta 6 Hz, Alpha 10 Hz, Beta 20 Hz). MIDI keyboard mode. Frequency sweeps (linear/logarithmic).

TSCM Counter-Surveillance

Spy camera detection (900 MHz, 1.2 GHz, 2.4 GHz, 5.8 GHz). Spy microphone detection (VHF/UHF/ISM/WiFi/BLE). Evil Twin WiFi detection (duplicate SSID, security downgrade, suspicious patterns). Rogue Bluetooth with OUI database. Known-bad surveillance vendor MAC matching. Whitelist management.

Skinwalker Ranch Mode

1.6 GHz anomaly monitoring (primary documented frequency). GPS L1 and Iridium satellite reference baselines. Ground Penetrating Radar band detection (10 MHz - 2 GHz). Infrasound 19 Hz detection. Environmental stimulation via Solfeggio and Schumann presets. Auto-activates binaural generation.

Investigation Profiles
ProfileDevicesUse Case
Full TacticalAll devices + all displaysMaximum coverage investigation
Skinwalker RanchTinySA + EMF-390 + WiFi + BT1.6 GHz anomaly + environmental correlation
Ghost HuntEMF-390 + Audio + BTEVP detection + EMF spike monitoring
TSCM SweepTinySA + WiFi + BTCounter-surveillance rogue device hunt
Quick EMF CheckEMF-390 onlyRapid environmental assessment
Audio EVPAudio monitor onlyDedicated voice phenomena recording
Supported Hardware
DeviceTypeFrequency RangeConnection
TinySA4 / TinySA UltraSpectrum Analyzer100 kHz - 5.3 GHzUSB Serial (SCPI)
GQ EMF-390v2EMF / EF / GyroEMF + Electric FieldUSB Serial (CH340)
RF Explorer WSUB3GSpectrum Analyzer15 MHz - 2.7 GHzUSB Serial (CP2102)
Nooelec SMArt XTR v5RTL-SDR Receiver52 MHz - 2.2 GHzUSB Bulk (librtlsdr)
WiFi (CoreWLAN)Network Scanner2.4 / 5 / 6 GHzBuilt-in (always-on)
Bluetooth (Core/IO)BLE + Classic2.4 GHz ISMBuilt-in (always-on)
Technology

Core

C++17, Qt6 (Core, Gui, Widgets, OpenGL, Svg, SerialPort, Bluetooth), GNU Autotools build system

Signal Processing

FFTW3, SoapySDR, librtlsdr, CoreAudio AUHAL, ARM64 NEON SIMD optimization

Platform

macOS ARM64 (Apple Silicon M-series). CoreWLAN, CoreBluetooth, IOBluetooth, IOKit, AVFoundation. SQLite3 (WAL mode) with optional MySQL/PostgreSQL/Firebird backends.

Anomaly Detection Engine

1.6 GHz Skinwalker Anomaly

Primary documented frequency at Skinwalker Ranch with GPS L1 and Iridium baselines

Ground Penetrating Radar

10-100 MHz deep subsurface, 100-400 MHz standard, 800 MHz-2 GHz high resolution

Infrasound Detection

0.1-20 Hz monitoring. 18.98 Hz fear frequency documented to cause anxiety and unease

20 dB Above-Noise

Persistence-based triggering with configurable thresholds and frequency watch alerts

Cross-Correlation

RF anomaly + temperature drop + EMF spike + barometric change = correlated event

Alert System

Info, Warning, Critical, Emergency severity levels with SQLite persistence and auto-record

View on GitHub See Companion: SpiritBox →