[Amps] unun

[R.Measures]

**  Without enough signal to produce grid-current, the input Z is sure to 
higher than with normal  grid-current flowing.  Murphy was right: "Almost 
nothing is as simple as it first looks".  

>I just figured out what you mean.  Input z with and
>without grid current..I'm not sure what the net effect
>would be.
>
>R. Measures wrote:
>
>>**  The sticky wicket is that the input Z of a g-g amp is not even close 
>>to being symmetrical.  
>>
>>  
>>
>>>Anybody  tried putting an "unun" between the filament
>>>choke and the input network of a GG amp.  If the
>>>input Z could be raised up to 200 ohms it would
>>>make the input filter-tuner a bit easier to manage...
>>>
>>>Dennis  W7JX
>>>
>>>
>>>_______________________________________________
>>>Amps mailing list
>>>Amps at contesting.com
>>>http://lists.contesting.com/mailman/listinfo/amps
>>>
>>>    
>>>
>>
>>
>>  
>>
>
>