tv antenna reception on ch.7,13,29

[bonk83]

i have a boom tv antenna with a amplifier i have a fair signal of 78 on ch.7,29,13 but when the wind blows it loses signal & gets lines i contacted wspa said they were vhf i don't know if anyone has this problem

 

[LarrySC]

If the coax is over 3 years old it may have water in the line. Also there may be a broken connection. The 4:1 Balun that converts the 300 ohm antenna to 75 ohm coax may be open. I tested a new TV here in Greenville with my new Digital antenna and received over 20 channels. Maybe your installation is outdated. Good Luck.