[Elecraft] Harmonic Distortion and Audio Intermodulation in K3's LIN OUT Port

[Jim Brown]

On Fri, 05 Sep 2008 21:22:33 -0400, Jack Smith wrote:

>What I found is that the 604 ohm resistor between U29's output amplifier 
>stage and the TTC-108 transformer primary winding forces the TTC-108 
>isolation transformer to operate in a regime where the performance 
>improving effects of a zero ohm driving source are not available. Hence, 
>the TTC-108's 0.5% THD performance significantly limits the LIN OUT 
>ports performance. 

Your advice is consistent with mine, except that I would eliminate the 
transformers completely. They are not needed if all the interconnected 
gear is bonded together, and they are susceptible to magnetic fields.  

73,

Jim K9YC