I used to have a in-car cell phone system and it had a glass-mount antenna which didn't require drilling. Basically, there was coax(conntected to the cell) to a plate that stuck to the inside of the rear window. Then on the outside of that window was another plate with the antenna attached to it. You can buy these a radio shack I noticed. I've also seem the same done for XM/Sirius Satellite radio.
I have searched and searched and so far have not found the same thing for 2.4 ghz wifi. Does anyone know where I can find one? If not, could it be as simple as removing the cell antenna from the exterior plate and reattaching a 2.4 ghz omni? Or maybe I could modify the existing cell antenna to the correct 1/2 wavelength of 2.4ghz?
Your suggestions / help / tips are appreciated.