[TenTec] "Z" match question

John Huffman hjohnc at gmail.com
Fri Jun 13 17:21:43 EDT 2008


Marty -

This article:
http://www.ad5x.com/images/Articles/Ztuner.pdf

describes building a Z-match. 

I built one and was happy with the performance.  Phil used T157-6 
torroid and #20 enamel wire for 100 watts.

73 de K1ESE
John

Marty Hartwell wrote:
> Hi
>
> I have an MFJ version Antenna tuner. I want to convert it over
> to a Z match.
> First question. If I stack two 2" toroids I think type 41 material
> will this handle 100 watts? Then what size wire would be alright to
> wind. I am thinking I will use solid 14g. with insulation. Right now
> I am looking at regular house wire using the black and white to keep
> the windings separate.
> Second question. I think the variables in the current tuner are around
> 500pf which should be aright to reuse, how big and what kind would be
> a good cap to put in for the switchable add on?
> Third question. Has anyone else tried this and did it work?
>
> Marty kd8bj
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