Help! Wonderful little system in a warehouse situation until radio station bleeds in after dial tone is broken. The radio station is NOT on the phone line, and when the base set is in the metal shop the station is not heard. Only in the wood frame office, and in every room and at every jack and on every phone line. Tried: grounding all un-used conductors, moving to different areas, disconnected un-used cables, and jacks. Need ideas!! or a solution would be NICER!