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## Topband: Confusion in ON4UN's Low Band DXing radiallengthcalculations.

 To: Topband Topband: Confusion in ON4UN's Low Band DXing radiallengthcalculations. k1fz@myfairpoint.net k1fz@myfairpoint.net Fri, 19 Dec 2014 15:55:57 -0500 mailto:topband@contesting.com>
 ```   The on/in ground wire- as RF advances toward the normal 1/4 wave high impedance (/high voltage point)  finds itself tightly coupled to a +- 350 ohm typical ground resistance. 'Hogs the voltage right down'   Many  Shorter radials do not develop enough high voltage, not reaching 1/4 wave.   Multiple radials divide the loss like resistors in parallel. lowering the  Q,   lower impedance, with lower voltage, being  pulled down results in less voltage leakage at the far ends. 73 Bruce-K1FZ www.qsl.net/k1fz/beveragenotes.html     On Fri, 19 Dec 2014 12:21:12 -0500, k8bhz@hughes.net wrote: I can’t agree with this “conventional” thinking. Why does a piece of wire magically lose it’s length just because you lay it on the ground? The electrical length changes because of Vf, and it’s resistance changes because of the lossy ground, but it’s still a piece of wire. I’m going to try to attach a posting I did back in 2006. If it doesn’t work, I will follow with a separate posting. > > Brian K8BHZ > > From: Tree > Sent: Friday, December 19, 2014 10:07 AM > To: Doug Turnbull > Cc: k8bhz@hughes.net ; 160 > Subject: Re: Topband: Confusion in ON4UN's Low Band DXing radial length calculations. > > Radials on the ground do not have a magic length. Worrying about resonance for them is not necessary. > > > If you tune a quarter wave wire up in the air - then lay it onto the ground - it couples to the ground and is no longer a distinct single piece of wire. Just make them an easy length to deal with and put as many of them down as you can. > > > Tree N6TR > > ----- End forwarded message -----     _________________ Topband Reflector Archives - http://www.contesting.com/_topband```
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