(all photos in this post, I took from my personal blog: XPandro-id.blogspot.com)
to adjust the gain (gain control) booster then turn the VR potensio until the picture on the TV is best but not appear distortion. I use a UHF antenna that is commonly sold in electronics stores, placed above the ceiling of the indoor home with a height of about 7 meters. My suggestion that the maximum results and the outdoor antenna is placed at a sufficient height so that the LOS (Line of Sight) to the transmitting station. This booster I place near the TV, but ideally should be placed close to the booster antenna and power supply fed via coaxial cable from the bottom. I might try in the future to the way.
as booster / preamplifier is placed near the TV can be directly powered by its own cable, power supply which I choose to use 5 volts from the USB charger. The following is a photo that I use the charger as a power supply:
between the charger and the MMIC preamplifier given VR kit (pot) 10K as a regulator gain (strengthening). please see rangkainnya scheme in my previous post.
results of several UHF TV stations (Net, TransTV, and Indosiar) which I captured in my location Cepu, Central Java, Indonesia, is seen in the following figure:
(Click image to enlarge)