I had a similar issue, power in the coop but too far from the router. Through other postings here on BYC I discovered something called a mesh WiFi extender, and Wyze cameras.
Part 1
The TP Deco router extender. It works off your existing wifi router, but you can string multiples of them along around your property and they each piggyback off of the others close by to boost the signal. I initially just bought the 3-pack, but we had some issues with trespassers in September so I bought a second set and distributed them around the property to create a good wifi mesh. Amazing signal strength everywhere now. Much much better. Easy to configure per their instructions too. For a camera about 250‘ from the main router I used more than 3 TP Deco units, but I was creating the WiFi mesh so I could have multiple cameras on all my outbuildings. You might be able to do it with just 2, but more likely you’ll need all 3 since one plugs directly into your existing router. I put one TP Deco unit inside the coop itself inside a heavy plastic bag tied shut around the power cable. That unit now has 6 cameras working off of its WiFi signal. I think you can put up to a dozen or so TP Deco units total on your existing router. It says it somewhere......
Part 2
Wyze cam pan and Wyze cams were very reasonably priced, easy to install and set up. I did everything in a couple hours in preparation for an unexpected journey we had to leave the next day for.
The cameras each come with two weeks enhanced coverage, but I’ve never renewed by purchasing that enhancement. The regular coverage is fine for what I need now. Oh, and
Amazon was putting a limit on how many pan cams you could get, so I went directly to Wyze cameras website to buy more of those and a few other accessories. Price was a bit better, shipping was a day or so longer.
Here is all the links to the units I bought and the extras like mounts, covers, cables. I also put new 32gb SD cards in each camera. Just in case.
Everything works together seamlessly, and it’s been a pleasure to be able to watch my babies in real time or playback and know they’re safe when we’re gone.
Links
TP Deco router....
https://www.amazon.com/gp/product/B06WVCB862/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
Wyze cameras, pan cam
https://www.amazon.com/gp/product/B07DGR98VQ/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
Outdoor case for pan cam
https://www.amazon.com/gp/product/B07L57GCYY/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
Wyze cam
https://www.amazon.com/gp/product/B07G2YR23M/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
Outdoor cover for Wyze cam Like this.....
https://www.amazon.com/SEEKONE-Prot...Wyze+cam+outdoor+cover&qid=1606707970&sr=8-12
Mounts for both.....
https://www.amazon.com/gp/product/B07F59HZLM/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
Longer power cable
https://www.amazon.com/gp/product/B07G9X817W/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1