The desktop computer in my coach (see signature for particulars) does not have a wifi board installed in it. I have obtained a Netgear AC1200 High Gain WiFi USB Adapter that I plan on installing in on...
Not sure why you have to explain why you are using a desktop... OH, you need to buy a laptop.:S Assuming your USB/wi/fi card has a screw on antenna, I would buy a Yagi Antenna for it as it will greatly increase the number of signals you can see.