Need an antenna or some device to locate TV interference.
Interference is local and is within 600 feet of house.
Usually appears on Channels 2, 4, & 5. Somtimes on higher channels.
Appears on screen as electrical noise similar to car ignition noise.
I have detuned FM band to use as aviation band (108-136 MHZ).
Can hear noise on portable radio within aviation band.
Any help would be welcome as we have limited income and can not afford cable.