I have a customer operating from a trailer. They have a small network (10Base-T) but are having problems with the cabling. There is a radio or TV antenna about 50 feet away and it also affects their phones. I have tried routing the cables in many locations but it only seems to work right down the middle of the floor. I was hoping I wouldn't have to run them in some pipes under the trailer but it seems like my only alternative. Any other suggestions???

Thanks