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Note 2 - Concentrations of Credit Risk
 3 Months Ended
Jan. 31, 2026
Notes to Financial Statements  
Concentration Risk Disclosure [Text Block]

Note 2 – Concentrations of credit risk

 

Financial instruments that potentially subject us to concentrations of credit risk consist primarily of cash and cash equivalents and accounts receivable. We maintain our cash and cash equivalents with high-credit quality financial institutions. At January 31, 2026, we had cash and cash equivalent balances in excess of federally insured limits in the amount of approximately $4.2 million.         

 

Sales from each customer that accounted for 10% or greater of net sales were as follows:

 

   

Three Months Ended January 31,

  
   

2026

    

2025

  

Aerospace customer

     11 %     -  

Wireless provider A

     -       21 %

 

Accounts receivable from each customer that accounted for 10% or greater of net accounts receivable were as follows:

 

   

Three Months Ended January 31,

  
   

2026

    

2025

  

Aerospace customer

     17 %     -  

Wireless provider A

     -       21 %

Wireless provider B

     19 %     10 %

 

For the three months ended January 31, 2026, one aerospace customer accounted for 11% of net sales and 17% of total net accounts receivable, and one wireless provider accounted for less than 10% of net sales and 19% of total net accounts receivable. For the three months ended January 31, 2025, one wireless provider accounted for 21% of net sales and 21% of total net accounts receivable, and a different wireless provider accounted for less than 10% of net sales and 10% of total net accounts receivable. Although these customers have been significant customers of the Company, the written agreements with these customers do not have any minimum purchase obligations and these customers could stop buying our products at any time and for any reason. A reduction, delay or cancellation of orders from these customers or the loss of these customers could significantly reduce our future revenues and profits.