I have a WRT54GC it has an internal antenna and an attachment for an external one. If I get a directional external antenna such as a BiQuad will the internal antenna in the router still pick up signals or will it be "disabled"? I want to attach a BiQuad through the SNC attachment to serve my living room across the house. The way this antenna would be oriented means that my bedroom (where the router is located) would get no reception from the BiQuad. However, the low gain internal antenna would be more then enough to serve a signal to my bedroom.