[Elecraft] On ground - in ground radials

[jerry]

Hi Dave,


Have you actually tried one?  Mine seems to work.  I was ready to put 
out radials
also, but doesn't seem to be necessary.

                  - Jerry KF6VB


On 2022-01-16 10:07, David Gilbert wrote:
> That post illustrates the mistake in thinking that a lightning ground
> (Ufer) is the same as an RF shield (radials) to avoid ground return
> losses.  They are NOT the same and they perform completely different
> functions.
> 
> 73,
> Dave   AB7E
> 
> 
> On 1/16/2022 9:35 AM, jerry wrote:
>> All,
>> 
>>    I had a similar situation.  The 4BTV was mounted on a pole pounded 
>> into
>> my wildland hill behind the house.  It had about 50 radials, and every 
>> year
>> when we whacked the weeds, one or two of the radials would get tangled 
>> in the
>> whacker.
>> 
>>    In the fullness of time, we put in a swimming pool a bit down the 
>> hill, and
>> the antenna site became a solar heating field for the pool.  The 
>> concrete guy
>> poured a 70' by 10' pad for the solar heating array.
>> 
>>    After he built the forms, I came out with a roll of 8AWG copper 
>> wire.  I
>> laid 80 feet of it along the rebar.  I pounded my pipe into the earth 
>> and had
>> the wire come out next to it.
>> 
>>    He poured the concrete, and I had an "Ufer" ground.  I installed a 
>> brand new
>> 6BTV, and DX Engineering's tilt base on the pole.  No radials. Works 
>> great!
>> I carefully tuned it, and then installed an MFJ998RT KW autotuner at 
>> the base of the antenna.
>> 
>>               - Jerry KF6VB
> 
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On 2022-01-16 10:07, David Gilbert wrote:
> That post illustrates the mistake in thinking that a lightning ground
> (Ufer) is the same as an RF shield (radials) to avoid ground return
> losses.  They are NOT the same and they perform completely different
> functions.
> 
> 73,
> Dave   AB7E
> 
> 
> On 1/16/2022 9:35 AM, jerry wrote:
>> All,
>> 
>>    I had a similar situation.  The 4BTV was mounted on a pole pounded 
>> into
>> my wildland hill behind the house.  It had about 50 radials, and every 
>> year
>> when we whacked the weeds, one or two of the radials would get tangled 
>> in the
>> whacker.
>> 
>>    In the fullness of time, we put in a swimming pool a bit down the 
>> hill, and
>> the antenna site became a solar heating field for the pool.  The 
>> concrete guy
>> poured a 70' by 10' pad for the solar heating array.
>> 
>>    After he built the forms, I came out with a roll of 8AWG copper 
>> wire.  I
>> laid 80 feet of it along the rebar.  I pounded my pipe into the earth 
>> and had
>> the wire come out next to it.
>> 
>>    He poured the concrete, and I had an "Ufer" ground.  I installed a 
>> brand new
>> 6BTV, and DX Engineering's tilt base on the pole.  No radials. Works 
>> great!
>> I carefully tuned it, and then installed an MFJ998RT KW autotuner at 
>> the base of the antenna.
>> 
>>               - Jerry KF6VB
> 
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to jerry at tr2.com