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Note 2 - Concentrations of Credit Risk (Tables)
6 Months Ended
Apr. 30, 2024
Notes Tables  
Schedules of Concentration of Risk, by Risk Factor [Table Text Block]
   

Three Months Ended April 30,

   

Six Months Ended April 30,

 
   

2024

   

2023

   

2024

   

2023

 

Wireless provider

    -       20%       -       18%