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.
Likes Received: 7. On a scale of 1 to 10, with 10 being I'll shoot my eye out and one being go ahead and give him the BB gun, how much should I worry about an ungrounded antenna in my attic. I have professionally installed lightning rods all over my roof. But I am told even a near strike can charge the antenna and fry my system. That's never happened to any other equipment in my house tied to the cable TV or phone system in 4 years in the lightining capital of the western hemishere, central Florida.