Similar here, in a 30-yr-old ranch-style house in W Michigan: Elec. at one end, gas and phone at the other, cable and dish at the back. I am working on getting those grounds bonded together. Alan NV8
I, too, have telco entering one corner of house (where the shack is), tower/coax in the opposite, and power on the other side of garage. It would take quite a bit of work (trenching, digging) to bond
I use 4 gauge THHN. I recall the ARRL Antenna Book recommends 6 gauge solid copper or larger. I want to see less than .01 ohm resistance across the longest path. If you plan on seeing thousands of vo
At 07:46 AM 7/29/2004 +0000, you wrote: Just curious, how is the telco connection done in the states ? What is there to connect to a single point ground? Here in SM it is just two wires coming to the
When thinking about it, remember that the energy in lightning is NOT at dc, it is around 1 MHz. The impedance of that path is primarily INDUCTIVE REACTANCE, not resistance. Resistance (greatly increa
At 03:57 PM 7/29/2004, Jim Brown wrote: When thinking about it, remember that the energy in lightning is NOT at dc, it is around 1 MHz. The impedance of that path is primarily INDUCTIVE REACTANCE, no
Lightning is a complex waveform. Typical rise times can be 1-2 microseconds with tails that decay from 10 to 100's of microseconds. A sine wave with a 1 microsecond rise time (1/4 of the cycle) would
The 1 MHz number I bandied about is from vintage IEEE statistical data that showed a broad peak of the energy in a typical strike somewhere around 1 MHz. Don't ask me exactly where I saw it, how old
damage. Put that same 12ga wire across a battery and in milliseconds it is melted. That's simple physics. Move a lot of electrons along a conductor and get a lot of heat caused by orbital transfer f
Pete.. I put in a peripheral ground system, but I didn't have to dig a trench. I used my gas edger to cut a slot in the lawn from the AC service entrance around the house to my SPG box, and then for