[TowerTalk] Need Capacitors for Matching Network

Art Greenberg art at artg.tv
Mon Aug 14 11:41:56 EDT 2017


Nice work, Doug.

Yep, it would be nice to be able to fine tune. I don't have air
variables in my junk box. I'll see what I can find.

Thanks!

-- 
Art Greenberg
WA2LLN
art at artg.tv

On Mon, Aug 14, 2017, at 11:26, Doug Smith wrote:
> My solution (http://www.w7kf.com/Articles/Projects/LNetworkCoupler.html)
> was to use air variable capacitors, one for each circuit. Adjust them
> once and then consider them as fixed values.  It seemed easier to get the
> values and power handling capabilities needed. I hand wound the coils out
> of 6 AWG copper from the big box store.
> 
> Also, it's nice to have variable components as you will have stray
> inductance and capacitance in your circuit that aren't in your model.
> 
> It did turn out large so might be a non-starter in your scenario..
> 
> 73,
> Doug, W7KF


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