techsupport

I hate range extenders with a passion. I've never found a setup that performs as well as having proper wifi coverage.

Ideally, you'd instead run a cable and set up an additional wireless access point (see that other comment for details).

If that's not possible, I'd go Ethernet over Power before I stooped to using a range extender.

As a footnote, the network I have at home didn't cost that much, but it's miles better than anything my ISP provided. I turned off wifi in my ISP router, and connected a PoE switch. To this switch I then connected four Aruba InstandOn AP22. Due to occupational damage, I tend to shy away from consumer-grade networking gear, but I have no regrets regarding this setup. If all goes as planned, I'll replace my shitty ISP tomorrow with a proper rackmounted router.

2 options- USB-C wired NICs are cheap and readily available, so you could easily use a wired connection.

But I think what you want to do is setup a WAP. You can do this with (nearly) any standard wireless router that meets your specs.

First, do not connect this to any part of your network yet. Instead, connect to and access its setup config. I know apps are trendy, but I have no idea if you can do this from there. You can if you use its internal website instead, often 192.168.1.1.

Once here, you need to do the following:

1. Give it a new IP in the same subnet as your existing router/network. If your main router is 192.168.1.1 and subnet mask 255.255.255.0, your new WAP can be 192.168.1.2. Make sure that your main DHCP range also does not include this address.

2. Disable the DHCP server entirely on your WAP. You don't want them to interfere with each other.

3. Configure the wireless to have the exact same settings as your main router. Your clients (phones, laptops, etc) will automatically choose the best connection point based on signal and noise.

4. Once configured, connect it to your existing network using a LOCAL port. Do not use the WAN/Internet port.

If needed, you can also connect other devices to the other local ports.

I’m no expert on this, but I did some reading up on extending WiFi range in my house before I landed on just going with a mesh system. The issue I’ve heard with simple range extenders is that a lot of times devices will try to hold onto the last clawing bars of a connection before finally letting go and connecting to a stronger source. Smarter mesh WiFi is supposed to be checking signal strength while you roam and doing the switch more efficiently for you.

Also if you have a coax outlet in your basement have you considered MoCA (Multimedia over Coax Alliance) and an access point? Others might be able to speak to whether it’s any good.