Re: Balun on tuner input?

Posted by Alan Bloom on Dec 09, 2011; 11:43pm
URL: http://elecraft.85.s1.nabble.com/KAT500-update-tp7072932p7080209.html

If the balun is at the input, then there can be only one antenna
connected at the output.  I guess that's another reason to put the balun
at the output.

Alan N1AL


On Fri, 2011-12-09 at 05:07 -0500, Ken wrote:

> On Dec 8, 2011, at 10:51 PM, Alan Bloom wrote:
>
> > The disadvantage of putting the balun at the input is that none of the
> > tuner circuitry can be grounded.  For example, the control shafts of the
> > variable capacitors have RF voltage on them, so the knobs must be
> > isolated.  
>
>
> If you have the balun on the input to the tuner, can you have ANY SO-239 outputs and still be balanced? Or it it limited to balanced line output ONLY (e.g. open wire or ladder line), no coax outputs?
>
> Ken
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