[Antennas] Radials

Sat Apr 18 08:25:55 EDT 2015

Yep, lots of hits. Google Ufer ground and see the counter. The Ufer ground isn't intuitive, a lot of people don't think concrete is conductive. 
With all due respect, the question isn't about grounding.
73, Mike NF4L
> On Apr 18, 2015, at 00:25, Riichard Neuman <secopsys at aol.com> wrote:
>> Do yourself a favor...Google "lightning concrete damage" ...get the lightning off the tower by other means than THRU the concrete.
>> Richard
>>> Hi Richard -
>> According to the electrician, whose company does a lot of grounding work here, rods would add nothing to the protection afforded by the Ufer ground. But that wasn't the question.
>> 73, Mike NF4L
>>>> -----Original Message-----
> From: Mike Reublin NF4L <nf4l at comcast.net>
> To: Riichard Neuman <secopsys at aol.com>
> Sent: Fri, Apr 17, 2015 9:03 pm
> Subject: Re: [Antennas] Radials
>> Hi Richard -
>> According to the electrician, whose company does a lot of grounding work here, rods would add nothing to the protection afforded by the Ufer ground. But that wasn't the question.
>> 73, Mike NF4L
>> On Apr 17, 2015, at 20:51, Riichard Neuman < secopsys at aol.com <mailto:secopsys at aol.com>> wrote:
>> You want to get the possible lightning strike off and away from each leg before the concrete. Clamps on each leg with heavy duty gently sweeping wires out to driven ground rods...one at each leg driven into the ground NOT thru the concrete. In addition possibly further ground rods heading away from each leg.
>>> -----Original Message----- 
> From: Mike Reublin NF4L < nf4l at comcast.net <mailto:nf4l at comcast.net>> 
> To: antennas < antennas at mailman.qth.net <mailto:antennas at mailman.qth.net>> 
> Sent: Fri, Apr 17, 2015 8:04 pm 
> Subject: [Antennas] Radials 
>> I have a 70' tower with an inverted-L for 160M and a 1/4 w sloper for 80M. The
> tower base has 8 yards of concrete and a lot of rebar. There are 3 #4 copper
> wires, with one end attached to each tower leg, then into the concrete, attached
> to the rebar then exits the concrete just under ground. 
>> The original plan
> was to put 3 ground rods along each wire. My electrician told me that as far as
> safety grounding goes, there was no benefit. The tower/base megged at 4
> ohms.
>> The wires are currently rolled up at the base of the tower. If I
> straighten them out and staple them to the lawn, do they then act as radials?
> Would it be feasible to attach more radials to these where they emerge from the
> concrete, so as to avoid having the top of the concrete pad awash in
> wire?
>> 73, Mike
> NF4L
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