2. Basis of Presentation and Significant Accounting Policies: PASSUR Network (Details) - USD ($)			3 Months Ended
	Jan. 31, 2020	Oct. 31, 2019	Jan. 31, 2020	Jan. 31, 2019
Details
PASSUR Network Parts Used in Repairs			$ 9,300	$ 9,000
PASSUR Network Costs, Capitalized				61,000
Purchased Parts for PASSUR Network				1,000
Depreciation of PASSUR Network costs			226,000	$ 205,000
PASSUR NETWORK, Net (Rounded)	$ 3,714,000	$ 3,949,000
Part and Finished Goods for the PASSUR Network	$ 1,822,000	$ 1,831,000	$ 1,822,000