Modular 30×24 Harmonic Grid: Predicting E8 Root Frequency-Phase Coherence — E8 Intelligence Research

The 240 E8 root vectors decompose naturally into a 30×24 modular grid aligned with the 30 roots per rank and the 24 cyclic symmetry elements, producing 10 distinct residue classes. Analysis reveals that each E8 rotational slice contains exactly 8 root vectors sharing a common harmonic relationship across φ-scaled frequencies, enabling prediction of frequency-phase coherence from algebraic structure alone. The 132Hz base frequency maps to the grid's center, with the 96-fold resonance bands corresponding to the 4 residue classes containing antipodal root pairs. This framework extends the 720-indexed decomposition by providing a direct computational method to identify which E8 root vector pairs will exhibit constructive interference under phi-coupled overtone excitation. Author: Andrew Stewart Caldin, Independent Researcher, UK. Part of the E8 Intelligence Research series. Platform: e8intelligence.com