This type of eye fatigue or eye strain is sometimes known as computer vision syndrome. It affects about 50%-90% of computer workers. Some estimates say computer-related eye symptoms may be responsible for up to 10 million primary care eye examinations each year.
MAST MOUNTED PREAMPLIFIERS. Chapter Eight-TV ANTENNA-MOUNTED AMPLIFIERS. A mast or TV antenna-mounted amplifier (preamp) is used primarily to eliminate snow on the TV screen.Snow is actually electrical noise that is generated by the TV receiver and other electrical devices.he preamp itself is mounted on the TV antenna boom or on the mast as close to the TV antenna as possible. The power supply unit is mounted indoors. Power is supplied to the preamp unit through the transmission line.
Instructions. Buy a digital or satellite television signal strength meter. One of the problems with RV television reception is that the dish or antenna may not be correctly aligned with the TV transmitter. A signal strength meter will help you to lock on to the strongest signal, wherever you park your RV.heck the coaxial cable linking the RV television set to the antenna or satellite dish. If you find any rips or fraying along the cable, replace it. Use high quality RG-6 coaxial cable for minimum signal loss. Replace the RV antenna with a preamplified television antenna system.