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Re: [TowerTalk] Balun Recommendation

Subject: Re: [TowerTalk] Balun Recommendation
From: Steve Hunt <steve@karinya.net>
Date: Thu, 19 Apr 2012 17:09:41 +0100
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
Gerald,

Exactly so - simple Ohm's Law, and easy to confirm with modelling!

73,
Steve G3TXQ


On 19/04/2012 12:42, TexasRF@aol.com wrote:
> Hi All, this is an observation from an innocent bystander:
>
> With constant power level, if the antenna Z increases, The voltage
> increases as well, right? Conservation of energy then requires the current to
> decrease, right?
>
> The rf voltage on the coax shield where it connects to the  antenna would
> be the voltage referenced to ground at that half of the antenna.  The choke
> current would be that voltage divided by the choke impedance (also
> referenced to ground), Is that right?
>
> So, one might think that a higher Z antenna = higher E = higher choke
> current? If so, power loss is then I^2 X whatever resistive loss is present in
> the choke.
>
> 2X Z = 1.414 X voltage = 1.414 X choke current = 2 X loss. if the above is
> true?
>
> 73,
> Gerald K5GW
>
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