my 2 cents here MH ----- Original Message ----- From: "Mr. Edgar McKinney" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Monday, September 13, 2004 7:49 AM Subject: Re: [Repeater-Builder] What is it?
> Sounds like something I had once before in Fla. > > Questions to consider.... > > Is the tower painted? MH : Is this over the 200 Ft. Rule for part 17 Tower Requirements ? > > How often are the tower's jointery checked and bolts loosened and > retightned? > > Is the coax grounded every ten feet? And is the coax (hardline( on the > outside of the tower or in the middle? > > Is the tower grounded using ground straps vs round cables? Are there more > than ten ground rods? Are their diameters larger than 1 inch? > MH: I believe a 10 Ft. X 2 1/2 Inch water ( Metal ) pipe can be driven to serve as a ground rod, unless a HF Antenna is being Constructed there. > What about the coax's entry into the equipment shelter grounded? > > I have discovered that if there is a problem with any of the above will > cause the problems you have discribed. > Also are there others on the same tower with faulty or loosened pieces of > equipment, antennas, clamps, grounding strapps loose.... > > Just a thought. > > Ed - kb8qaeu > -------------------------------------- > MH: Say Steve a cracked antenna in experience from another repeater owner raised havoc the Trombone style element has a history to get water in the crack and should be replaced. Joints unless the whole antenna again is serving HF itself and you are insulating the tower as a hot tower. I am sure any Broadcast Engineer may put in their 2 cents worth. Mark AB8RU > Steve wrote: > > > We are getting some strange receiver noises (intermittent > > pops/cracks/static) as well as sudden losses of sensitivity on our 2 > > meter machine. This is what the top of our tower looks like: > > > > http://www.qsl.net/ke4mob/antenna1.jpg > > > > http://www.qsl.net/ke4mob/antenna2.jpg > > > > The thin white vertical is our Hustler G7. The other antenna is what > > I'm asking about. I know it's probably a late 70's era UHF TV > > broadcast antenna...our site was used by the county gov't for a TV > > translator site before it was abandoned. It needs to come off, but > > how much does this thing weigh? I don't want to tie a ginpole to it, > > loosen all eight bolts and find out it weighs 300 > > pounds....especially if gravity suddenly takes over!!! > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > > > Yahoo! Groups Links > > > > > > Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
