You are reading a single comment by @Polygon and its replies.
Click here to read the full conversation.
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
Polygon
There is no such thing as an SMA to USB adapter. There are WiFi radios with SMA connectors, some of which have a USB interface. To be legal the whole radio and aerial combination has to be within certain limits which generally means you can't mix and match but have to buy vendor A radio with vendor A aerial.
At high frequencies the signal loss in the cable and connector is high so trying to terminate the cable without proper equipment is likely to be a problem.
The better solution for this kind of thing is to get an external radio and aerial and then run something like Ethernet back inside. Maybe something like https://www.senetic.co.uk/product-rblhg-5hpnd/ (I haven't used that one).