A few clarifying points, if I might...
1. N6LF has done great work, and he explains it well.
2. I said nothing about elevated radial systems.
3. "RF ground system" is a perfectly good term and is accepted and
understood in the rf design community.
4. I stand by my original assessment that, if you can force return current
through a high Z path that has been placed in parallel with your on-ground
or just below ground radial system by randomly connecting ground rods, your
radial system is sub-standard; in layman's terms, it sucks rocks.
73,
geo - n4ua
On Fri, May 10, 2013 at 12:15 PM, Jim Brown <jim@audiosystemsgroup.com>wrote:
> On 5/10/2013 8:58 AM, George Dubovsky wrote:
>
>> In the case of a radial system on or just below the surface of the earth,
>> one or many ground rods connected anywhere to the rf ground system should
>> not hurt,
>>
>
> Please remove the phrase "RF ground system" from your vocabulary -- it is
> a false concept, and leads to confusion.
>
> Rudy Severns, N6LF, has done a lot of work studying radial systems for
> verticals, especially for the lower bands. Rudy has shown that an earth
> connection can significantly degrade the performance of an elevated radial
> system. I suspect he might agree that adding an earth connection to the
> feedpoint of a dense on-ground radial system would not hurt, and radials
> connected a grounded tower certainly have that condition . Earth
> connections elsewhere in the radial system are a bad idea, because they
> disturb (in a bad way) the current distribution along the radial. Rudy's
> published work does a great job of explaining why.
>
>
> 73, Jim K9YC
> ______________________________**_________________
>
>
>
> ______________________________**_________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/**mailman/listinfo/towertalk<http://lists.contesting.com/mailman/listinfo/towertalk>
>
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|