Hello I have the TP Link Deco E 4 mesh wifi system in my loft next to my router and a unit in each of the bedrooms ( solid old  walls so these have helped tremendously )  . We have no mobile signal in or around the house so use wi fi calling . What I would like to know is what can I purchase that would give me a mobile signal outside ...I can plug it into my stables electric socket . The router would be about 100 or so metres from the stables . We use Airband ( which when not having issues is good ! as all others over the years have failed due to our rural location and the cabling passing through overgrown trees etc ) . The Airband signal receiver is on the edge of one of our fields 

Any advice gratefuly received 

Sharon