Create your own Wi-Fi hotspot at home.
Create your own Wi-Fi hotspot at home.
Hello, I'm working on setting up an access point alongside my DIY PFSense router. The main goals are the same: flexibility and the ability to upgrade components for better performance, features, troubleshooting, and availability of parts. Of course, cost remains a consideration over time, since it allows replacing just one part with a new feature instead of purchasing an entirely new device each time. While researching the AP, I noticed that firmware restrictions often lock AP mode on Wi-Fi modules outside the 2.4GHz band. Some suggest government regulations might play a role, given the variety of frequencies now available from manufacturers. Are all devices certified—including non-brand ones? Is using unapproved Wi-Fi equipment illegal for these bands? Are there special tools that support AP mode beyond 2.4GHz? And if so, why do many Wi-Fi cards lack this capability despite ad-hoc functionality being possible? Any additional insights would be appreciated.
2.4ghz, 5ghz and 5.8/6ghz RF bands intersect with numerous devices. I’m familiar mainly with weather radars that cause problems at 6ghz, though solutions exist. If you require a 5ghz AP, simply purchase one? I’m confused about your question.
The video focuses solely on using a PC as a router. It advises against creating your own access point and suggests purchasing a pre-built one from a trusted brand. While I understand your intention, opting for an existing AP would save time and effort. Manufacturing your own would be quite demanding in terms of work and resources. Moreover, you'd still need to comply with local regulations in your area.
I noticed the video suggests using an OTS access point. I only mentioned it when my explanation was unclear, not in my initial post. Previously, I relied on a standard AP, and my main worry is the e-waste from replacing it due to lack of features or heat-related problems. This isn’t a big issue since I’m working on my own for personal use. Your comment about needing approval from a regulatory body aligns with what I’ve seen online. Some sources indicate that certain countries restrict chip usage in APs because of laws, which might mean any AP must be officially sanctioned—even if the company isn’t well-known. I’m in Canada and would appreciate advice on whether purchasing unknown Wi-Fi access points could be illegal (unless approved). Also, why would building my own AP be against the law when using the same chip, power, and antennas as a client? It seems the difference lies in compliance rules rather than technical differences.
Using pfSense or OPNsense is quite challenging at this point. They offer minimal help for WiFi cards, and only recently did they add WiFi 5 support for AP mode, which I found didn’t function properly—I still got the old WiFi 4 speed. Another problem is that access points often have different certification than standard WiFi cards; APs usually get drivers first, especially proprietary ones for newer standards. While an AP typically runs Linux with hostapd, you won’t find the necessary drivers or modifications, especially since they’re often built for much older kernels. Unfortunately, it isn’t straightforward to just build your own AP and replace the card, because new cards take years to get AP support in Linux and usually don’t perform well afterward. For a long time I relied on a NAS WiFi card as a backup AP, but eventually stopped using it because speeds were poor and features like DFS didn’t work.