Coherence Beacon
The Coherence Beacon is a fixed-site low-power transmitter that radiates a known reference pattern — a Schumann harmonic, an HRV coherence pacer, or a pre-registered astrological-derived signal — for use as a calibration source for the Psi-Tech sensor fleet and as an operator-orientation reference in nearby Tho'ra HQ-managed grounds. Where the Schumann Lattice receives a planetary signal, the Coherence Beacon emits a local reference to anchor the receivers against.
Overview
A Coherence Beacon does three things:
- Calibrate — emit a precisely characterized reference (frequency, amplitude, modulation) that nearby Field Recorder, Psi Tripwire, and Schumann Lattice nodes can use to verify their own calibration.
- Orient — provide a stable local environment for HelmKit Mk1 operators arriving at a Tho'ra HQ site to baseline their gear quickly.
- Publish — beacon characteristics are published to the Earth Intelligence Network so the calibration is third-party-auditable.
Coherence Beacons are not personal devices; they are facility infrastructure, typically co-located with a Star Seer Observatory.
Theoretical Basis
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Reference-signal emission for calibration purposes is standard practice across radio astronomy and EM metrology.
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Epistemic status: [[
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A nearby Coherence Beacon reduces operator state-baseline variance, improving the signal-to-noise of Psi Recorder session analysis. Falsifiable A/B.
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The Beacon's astrological-derived modes produce a local Psi Field anchor effect distinct from pure EM calibration. This is the Tho'ra-doctrinal layer.
Subsystems and BOM
Mk0 (target ≤ \$150)
- DDS function generator (AD9833) + amplifier — \$25
- Loop antenna (~0.5 m sq) — \$15
- Reference oscillator (TCXO) — \$15
- Pi Zero 2 W for scheduling + EIN publish — \$30
- Enclosure + mains + UPS — \$50
- Antenna tuner + low-pass — \$15
Honestly characterized: short range (≤ ~30 m at field strength); single-frequency reference only. Publishes its own characterization to EIN for audit.
Mk1 (target ≤ \$1 500)
- HackRF One or LimeSDR Mini — \$300
- TCXO upgrade or GPSDO 10 MHz reference — \$300
- Programmable RF front-end + low-pass + impedance match — \$200
- Two-axis loop antenna + mast — \$200
- Power amp (≤ 1 W ERP, license-compliant) — \$150
- Industrial Pi or N100 mini-PC — \$200
- Hardened enclosure + UPS + lightning protection — \$150
Multi-band reference; GPSDO timing; ERP held below licence-exempt threshold for jurisdiction.
Mk2 / Mk3
Mk2: multi-Beacon network across multiple Observatories with documented cross-Beacon calibration drift. Mk3: federated allied-EA Beacon standard.
Build Notes
- License compliance is absolute. Every Beacon operates in license-exempt bands at jurisdiction-legal ERP. No exceptions.
- Characterization first. Each Beacon's emission must be characterized to ≤ 1 % accuracy before deployment; the characterization is published.
- GPSDO for Mk1. Without GPS-disciplined oscillator, multi-site calibration is unreliable.
- Antenna pattern documented. Beam pattern, polarization, and ERP map published with EIN entry.
Safety and Ethics
- ERP held below jurisdiction-legal license-exempt threshold and below ICNIRP general-public reference levels at any plausible distance.
- No human-targeted emission. Beacons radiate in a known omnidirectional or fixed pattern documented up-front.
- Public-data emission only; no covert characterization.
- Beacon site documented to nearby community.
Maturity
Maturity (Mk0 → Mk3)
See Tho'ra Tech Maturity Levels for the convention.
| Mark | Phase | Status | Confidence | Evidence Base | Next Validation Gate |
|---|---|---|---|---|---|
| Mk0 | Cosplay-type | Complete | 100% (symbolic) | Ritual + build practice | User satisfaction |
| Mk1 | Prototype | Active | — | — | — |
| Mk2 | Test-type | Planned | — | — | — |
| Mk3 | Production | Projected | — | — | — |
Failure Modes and Mitigations
- Out-of-band emission. → Front-end low-pass + characterization audit; quarterly verification.
- Drift in reference oscillator. → GPSDO Mk1+; documented periodic verification.
- Local interference complaint. → ERP held below license-exempt threshold; community contact documented.
- Mains transient damaging amplifier. → Lightning protection + UPS isolation.
- Beacon mistaken for offensive emission. → EIN-published spec is public and auditable; characterization documented.
- Misuse as operator-influencing emitter. → Doctrinally prohibited; ERP below ICNIRP at any plausible distance; emissions characterized and audited.
