Can someone recommend an inexpensive satellite signal strength meter? I see them on Ebay for $20-$30 for a little kit. Are those any good? I want to take my Dish 1000 down and build a sturdier more tweekable mount for it, but when I put it back up it would be handy to have a meter to help with the initial pointing. The kid that came out to do the install had one of those $25 meters that he claimed he paid $100 for.