GE 25982EE3 5.8GHz Expandable Phone/ Answering System

I purchased these phones to add extensions in my home and on the outside they are great phones, easy to use and set up. Loud rings, good answering machine too, but the drawback is I fully expected them to have a good range on them since they have a regular corded base and two extensions that plug into regular outlets. I can't take these phones anymore than 15 feet from their base, and forget about using the extension in another part of the house, no signal will transfer at all. I've tried everything in troubleshooting, resetting the base, the handsets, moving them away from appliances and outlets, but I still get bad static and screeching if I leave the room with them and forget taking them outside, no signal at all. Overall if you are going to use these phones in the same room or short distances then go for it, they are great in one spot, and the cost is nice as you get three phones.