How can I build AM radio antenna? They seem pretty straight forward but my problem is I have alot of metal on house and large metal shop. Metal interfers with radio signals so I have my tower set up 45' from closes metal which is also about 150' of wire run to my main home theater receiver. So I think it'll need boosting, which I aready have a HD & FM antenna with built in booster and rotates. Can signal be split on tower and receiver ends and use same booster set up? Also any ideas on antenna built would be helpful.