Author: Patrick Greenlee <patrick_g@windstream.net>
Date: Fri, 7 Aug 2015 14:31:09 -0500
Since I will be mechanically and electrically bonding three horizontal radial cast beams to the tower's rebar cage at one end and likewise at the other end to piers in the ground with rebar in them (
On 8/7/15 12:31 PM, Patrick Greenlee wrote: Since I will be mechanically and electrically bonding three horizontal radial cast beams to the tower's rebar cage at one end and likewise at the other end
Author: Patrick Greenlee <patrick_g@windstream.net>
Date: Fri, 07 Aug 2015 19:03:26 -0200
Not sure why you're driving rods.. the Ufer ground is a better connection than any rod (more contact area, lower resistance, etc.). Thanks for your reply. Why drive rods? Because I didn't know any be
Patrick Greenlee wrote: >>So would circling the Ufers be redundant?<< == I won't give you advice on what to do but I will share with you what the TIA-222-G code says about grounding. Generally TIA-22
Author: Patrick Greenlee <patrick_g@windstream.net>
Date: Sat, 8 Aug 2015 09:11:48 -0500
I have downloaded and am working my way trough a lot of tech notes on lightning protection furnished for free by Polyphaser. (Got the link here on TT) I will also read TIA-222-G and then I will do wh
Grant Saviers wrote: >>I would like to be enlightened why #00 wire is needed to attach to two ground rods which are likely several ohms resistance to the "remote earth"? Especially when #6 was ok in
Author: Patrick Greenlee <patrick_g@windstream.net>
Date: Sat, 8 Aug 2015 12:51:58 -0500
Since it is the surface area that is key in the wording why not a wide thin copper strap. Not in a reductio ad absurdum manner but similar to the copper foil straps/tapes used commonly for RF groundi
I suspect the important aspect is the surface area interfacing with soil, not the volume of dirt under or surrounding the grounding system. That 6x6x6 cube has far more surface area in contact with t
Thomas Noel wrote: >>I suspect the important aspect is the surface area interfacing with soil, not the volume of dirt under or surrounding the grounding system.<< The volume of dirt is critical, in t
FWIW, I have 3 F12 yagis, which have been up respectively 20, 19, and 16 years, so far.. On none of them did I use anything but the standard rivets. I'm sold. 73, Pete N4ZR Download the new N1MM Logg
On 8/8/15 10:32 AM, JVarney wrote: Grant Saviers wrote: >>I would like to be enlightened why #00 wire is needed to attach to two ground rods which are likely several ohms resistance to the "remote ea
On 8/8/15 12:38 PM, Thomas Noel wrote: I suspect the important aspect is the surface area interfacing with soil, not the volume of dirt under or surrounding the grounding system. That 6x6x6 cube has
Jim Lux wrote: >>I'm curious about why "surface area" (in TIA-222 for ground conductors)<< This article from Times Microwave explains it: lightning is a pulse with a very fast rise time and acts like
This article from Times Microwave explains it: lightning is a pulse with a very fast rise time and acts like RF, which means inductance and impedance come into play. That would explain the surface ar