If you are having problems with a Powermid XL system purchased from SatCure, these notes may help you.
As with all radio devices, the Powermid remote control extender units are vulnerable to interference from other devices and to signal blocking. Test the receiver and transmitter close to each other if you think that range or interference may be a problem. Switch off or move any wireless devices such as DECT telephone, wireless routers etc. (Some TV sets and DVD recorders can also generate interference.)
Many houses are constructed with foil-backed plasterboard on the walls and ceiling. Chicken wire is often used to support ceiling insulation and wall plaster. You can check for this with a low-cost "pipe locator" from your local DIY store. The presence of foil or wire mesh will block most of the signal. If this occurs in your house you should try to position the Powermid units where the signal can not be blocked. Sometimes it is possible to place them on window ledges so that the signal goes out of window and is reflected, by a wall opposite, back through the other window.
If placement proves to be impossible, it may be feasible to remove at least part of the offending metal foil or mesh during the next renovation or decorating work. However, foil is often used to minimise damp ingress and heat loss so take advice from an expert.
The transmitted power is limited by law and it is not possible to increase it. However, fully extending both aerials and ensuring correct (matching) orientation will improve the range.
If you are suffering interference from a neighbour using a Powermid XL system, you can try telescoping the aerials to minimum length and direct them both horizontally away from the neighbour's units. Get him to do the same. If this doesn't help, try putting your aerials horizontal and his vertical, or vice-versa. Maximise the distance between your units and the neighbour's.