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Note 5 - Leases (Details) - USD ($)
12 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2020
Details      
Operating Lease, Cost $ 34,000 $ 32,000  
Termination Fee 4,000    
2025 38,400    
Operating Lease, Liability 28,800    
Right-of-Use Asset $ 154,000 $ 20,000 $ 166,000