Once I stuck the emitter right over the eye, and plugged it into the RFX9400 instead of the Xantec distribution block (i.e., used the same emitter I had), it worked perfectly and continues to do so 10 days after installation. Very pleased with the Pronto wireless extender!! Tried for hours with the emitter and the Xantec, trying the electrical tape, putting it on the inside of the door adjacent to the unit, etc. Nothing worked. The RFX was TOTALLY worth the extra money and little hastle.