Cisco WiFi Links that I use regularly

Wireless LAN Compliance Lookup

Country Codes Lookup too

https://www.cisco.com/c/dam/assets/prod/wireless/wireless-compliance-tool/index.html

Cisco Aironet Antennas and Accessories Reference Guide

https://www.cisco.com/c/en/us/products/collateral/wireless/aironet-antennas-accessories/product_data_sheet09186a008008883b.html

Cisco Wireless Solutions Software Compatibility Matrix

https://www.cisco.com/c/en/us/td/docs/wireless/compatibility/matrix/compatibility-matrix.html

Cisco Access Point and Wireless Controller Selector

https://www.cisco.com/c/en/us/products/wireless/access-point-controller-selector.html

DHCP OPTION 43 for Lightweight Cisco Aironet Access Points

https://www.cisco.com/c/en/us/support/docs/wireless-mobility/wireless-lan-wlan/97066-dhcp-option-43-00.html