Remote hilltop sites are very often fed with a lateral power line that taps off from a major distribution line that could be miles away. If nothing but the hilltop site is on that lateral, and with the site owner's permission, the power utility can pull the cutout fuses to kill the lateral circuit. If the AC buzz goes away, the utility crews must find and correct the problem. As Kim points out, there are many possible causes of noise problems.
Question: Does the noise change or go away when it rains? 73, Eric Lemmon WB6FLY -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Monday, April 26, 2010 7:59 AM To: [email protected] Subject: Re: [Repeater-Builder] AC buzz on VHF Distribution voltages begin at 2,400 and go to 34,500 volts. Transmission voltages begin at ... depends upon the utility. Could be 46,000, 69,000 or 115,000. Anyway... it's not the voltage. It's simply there is a device issue somewhere on a power line. Could be a bad connector. A bad transformer. A bad lightning arrester. A bad switch. A bad insulator. Bottom line, something is breaking down and creating this buzz. Begin by driving around the area and narrowing the area down. Then with a small yagi try to pin point things down to a few poles, or THE pole. Some electric companies have staff that can assist with RFI, and some do not. Don't assume they do. If you have questions, drop me a line. 73, Kim - WG8S
