TIL: Today I Learned...
i have one like this i got from Amazon for like $35, i had some old trampoline poles i put together and stuck it up next to my house in the back, just right abouve the height of the eave of the house. it came with an amplifier and it gets power through the coax cable so that the remote will turn it to tweek the reception. I was actually surprised at how well it worked for that price, now its mostly plastic, but i've had it over 5 years...