I think I heard on the web somewhere about disabling the WIFI adapter in Windows, maybe on Scottiestech.info. I knew that my work laptop had it disabled, but didn't realize that I had not disabled it on my home laptops, both my current and former one! I just had the software switch off or in airplane mode.
So I re-enabled the WIFI adapter on my Win 10 machine and ran my Acoustimeter across the laptop, and couldn't really find a signal spike. But then again I was not connected to any networks. Not sure if there are periodic burts of WIFI that get transmitted if it's on but not connected. So not really conclusive. I should connect to a network and see if it spikes.
I just wanted to know how long I may have been being blasted with WIFI if the adapter was enabled. My previous laptop, and old Vista PC, had its hard drives just wiped. But I forgot to check it for EMFs with the WIFI adapter still enabled. I may have an image I could load back onto it or I could use the reinstall discs. Not sure if it's worth it though. Anyone else have an EMF reading device and can confirm if you need to disable the adapters to fully block WIFI and Bluetooth EMFs?
Luckily, we live in an age where battery life is considered important enough that manufacturers allow you to turn off Wifi to save power. The user can still do this.
So in Windows 10, just right clicking on the internet icon will allow you to turn off the Wifi from the prompt available, and that will turn off the Wifi card in your computer -and it will actually stay shut off until you change your mind. Amazing! I've confirmed this multiple times with my little EM meter, and I trust the conclusion because I know how valuable battery life is to the industry, so shutting down all non-essential tasks is something these modern devices are able to do.
Where it gets annoying is in the world of plug-in wall-socket power devices, like printers and DVD players and such. The modern ones are all hungry for Wifi and automatically try to connect and provide little to no ability for the user to opt out. If the packaging proclaims that it is Wifi friendly, chances are it's on by default. -Whereas things like cameras, which are battery operated, will generally allow the user to opt out in the menu system to conserve power.
But the only way I've found to reliably disable my printer from reaching out to the mother ship over Wifi is to keep it unplugged from the wall socket. When I print stuff, I stand clear and unplug it immediately when I'm done. I'm fairly certain that if I were adventurous enough, it wouldn't be too hard to open it up, locate the Wifi card, and unplug it. But that's going to change soon; announcements were made last year of the new generation of CPU/controller chips for general hardware which will have Wifi radios built right into them, so they will no longer need separate Wifi boards which for now are easy to identify and unplug.