Another metal building wifi connection

[DrDirt]

I have a metal building only about 50 feet from a back corner of my house.  I have wifi in my house through the router from AT&T.  

My shop is on a seperate meter from the house so they are not on the same power circuit.

In one other post it was mentioned that a coax cable could help to provide wifi to an out building.  I do have two underground coax cables running to my shop.  One I use for the TV and the other is a spare.  

Is there something I can use to pick up the wifi signal in the house and get it to the inside of the shop via my spare coax cable?

[StephenB]

Normally you'd use an outdoor ethernet cable.  But there are some gadgets that will carry 100 mbits ethernet over coax.  For instance here: https://www.amazon.com/Dualcomm-Ethernet-over-Adapters-DECA-100/dp/B009AGCLVG   Soome more expensive ones claim gigabit support: https://www.amazon.com/Motorola-Adapter-Ethernet-2-Pack-MM1002/dp/B078HMDDVS

I haven't used these myself, so I'm not recommending these particular adapters.  I'm just pointing you in the right direction.