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
>
>
>
>
>
>
>
>
>
>
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|