I have some equipment that is about 300 feet up on an FM Radio tower. I have shielded cable but I am guessing that there is still just enough interference from the FM frequency messing with the impedance making the cable read about 340 to 350 feet. Has anybody used any good cat5 extenders that work with POE that I could put up on my tower about 50 to 75 feet that would allow me to get 100 full duplex on my cable link. Right now I can only get 10 Full and sometimes I have to set it to 10 half. Please any info would be appreciated.