So I’m trying to improve my wifi signal, for a few years I’ve used a tplink range extender (cheap kind) to boost the network from the floor above me to downstairs. There is 0% possibility I can get a wire down here so I have to live with it. For a while I used the extender near my PC (desktop) with a wire running from it to the rj45 jack on my pc. Doing that I get about 25 mbps. Full net speed should be 50mbps. Recently I moved the tplink extender closer to where the AP is upstairs (right below it), so it’s resting up near the ceiling connected to an extension cord. Using a really old usb wifi N stick, I got maybe 15 mbps, and that’s after aligning the antenna on both ends to get the best signal (using wpa-cute to check the db level). So, I got a gigabyte wifi card with an external antenna, using an intel 8265 chipset and after aligning the antenna I get about 35 mbps consistently.
Now I am wondering if I can use something better to replace that tp link extender. I have an old router that supports ddwrt but I don’t know if it supports AC wifi. Would something like using an old desktop pc with that same 8265 card as a repeater work, with pfsense? Would using a cheap wifi router like I have work, with ddwrt? or maybe a new cheap router that supports ac wifi, or somthing else.