Thank you for posting in the Intel Community.
I see that you are looking for a software to test the radio emission of the Intel® Dual Band Wireless-AC 8265, bear in mind that we can provide you with the drivers for the Intel® wireless adapter Reference link: https://downloadcenter.intel.com/product/94150/Intel-Dual-Band-Wireless-AC-8265), in case of the resting software we recommend waiting for a community peer to see if they any advice about what can be used. If you are developing any software/hardware you can refer to Intel® Resource & Design Center (reference link: https://www.intel.com/content/www/us/en/design/resource-design-center.htmlb).
Hope this helps.
Intel Customer Support Technician
Under Contract to Intel Corporation