[NLRS] VHF low pass filters?

[kp hpjr]

Group,

Happy New year.

A neighbor approached me asking if I was operating the other night. He said that I had been interfering
with his over the air TV signal. He placed the time frames during the MS rally and during this weekend Es opening.

I have only been on 6m as of late at times running up to 600w. His home is about 1000' away from me. His setup is a new digital TV with outdoor antenna fed with the typical radio shack type coax. His antenna is basically looking my way.

I'm needing some help with this. Are there filters I/he can use? 

I'm well grounded and use very good hardware...Andrews connectors and feedlines etc.

Your input welcome.

Kirk, N0KK

BTW: 1st RFI complaint in 18 years.