HR4BTC (npub1ya2…x9ty) could you make an HF array antenna from domestic house yagi antennas? They’re only directional at VHF etc, at spacing of 20-50 m the way they’re wired into suburban houses all I see is a potential to have a distributed OTH tx/rx.
Obvs requires precision timing coordination between nodes in each home. I think it would be only modest power draw for each tx element…
Just a thought.