T.V interferance to neighbors

:?: What are some ideas to solve my interference to my neighbors tv?His problem is lines on the tv during transmit only,no audio is comming through.What can I do in order to prevent this problem?I have great neighbors and want for everyone to be happy.Thanx in advance.Oh, BTW,it does it with the amp on or off :!:
RCI 2980
Palamar 300 1x3 tube
rg 213 cable
maco v-5000 antenna