Probably. I don't have my tables anymore. I was thinking if he's using galvanized ground rod and copper strap. Then it would be better to used either tinned copper strap or aluminum strap. Even when
No, the white wire is neutral, the GREEN wire is ground. (Black obviously is hot. For two wire polarized plugs, I've always used the mnemonic "black hot shorts" to remember that the skinny blade is h
The High Sierra and other "screwdriver" antennas will be too tall for mobile operations from a tall SUV like the Durango (or indeed from any vehicle). However, it can be mounted to the frame and come
See comments below. 73, Bob AA0CY (ex PolyPhaser Technical Consultant) Boy. This just gets complicateder and complicateder. I was all set to do my ground system and grounding radials with #6 wire, an
<snip> The water table here in west central Florida is 18-19 feet, or so I am told. Is your understanding that I should drive a rod down to that depth to which to ground the tower? Not necessarily. Y
Isn't there a fellow in California (I think it's N6AA) who handles these items? 73, Bob AA0CY Greetings, TowerTalkians -- Russ, W8BOZ, has some prop pitch motors that he's trying to refurb. Apparentl
see below told. soil? off I am told by informed sources that the soil in this immediate area is mostly sand just about down to the water table (18-19 feet down), though there are traces of clay start
These poor souls obviously were not properly grounded. They should have had a reel of 1.5'-wide copper strap between the underwire and a suitable ground point (say the grounding system of their flat)
As a general rule, the eastern part of North America is acidic and the western half is alkaline. Do a pH test to be sure. You can use the same product as is used to check pools and spas. Call PolyPha
Tek has some very interesting TDRs out including software controlled PHD (Push Here Dummy) models for the 90's technician. He may not understand the underlying principles, but he knows which button t
While it may not be an issue for one-time use, please realize that the "stinger" (i.e. center conductor) of RG-11 is somewhat larger than the stingers of RG59 and RG6. If inserted into the female F c
The Ufer Ground (named after George Ufer who is credited with creating it) ties the rebar in the concrete tower base etc into the [tower] ground system. It may be the rebar in the foundation of your
If a triband vertical (2m-70cm) was placed on top of a mast at the 74 foot level would it be prone to lightening strikes? Extremely vulnerable. Would it be better side mount it on the tower? Yes, but
Diverters are used to shield side-mounted antennas. They are horizontally polarized and are placed above and below the antenna to be protected. Distance above and below usually isn't critical as the
If the builidng is reinforced concrete, you can ground via the rebar (Ufer ground). However, you should provide addiitonal paths via wide (recommend 6"- or 150mm-wide) copper strap. If you make the l
You need to protect your sites with a Trevino, "not even God can hit a #1 Iron." And Lee should know; he's been struck by lightning at least twice! 73, Bob AA0CY On Thursday, 09 September, 1999 1:45
What is the pH of your soil? For alkaline use copper clad for acidic use galvanized steel. 73 Bob AA0CY Hello All, In my area the only ground rods readily available are steel, in lengths of 8' and 10
Contact PolyPhaser or Steve at DavisRF, they'll give you the straight answer (basically, it's balderdash). and why. Poly used to have a free video showing one of these porcupines taking a hit (just a
Hi: << it's a lack of proper grounding which allows excessive static charge buildup to initiate a skyward moving leader. >> I was definitely taught: the leader is produced when the charge in the grou
The TDR will tell you where there are impedance bumps among other issues (such as opens and shorts). If the center conductor is migrating (called cold flow), the impedance will change and you can fin