[1000mp] AMP Question

[Garry Shapiro]

The impedance is nonlinear--and so voltage and current do not have a 
constant relationship.

Rob Atkinson wrote:
> Hi,
>
> I guess I don't understand how the Z of a load can change with the 
> power delivered to it unless the components affecting the Z are 
> underated for the power.   maybe i'm missing something?  sorry.
>
> 73
>
> rob / k5uj
>
>
> On Thursday, May 3, 2007, at 10:09  AM, Rod Elliott wrote:
>
>> Dick...
>>
>> I use a Mk5 Field to drive an AL-1200. No problems... works great.
>>
>> In my experience the SWR presented to the Field by the amp's input is 
>> always well below 2:1, even if the output of the amp is not perfectly 
>> matched. The Field has no problem with that.
>>
>> One precaution... do NOT use the Field's internal antenna tuner when 
>> driving the amp. (The amp's input impedance varies with drive 
>> level... you don't want the Field's tuner to strip its gears trying 
>> to follow your voice! )
>>
>> 73
>> Rod VE3UW
>>
>
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