[AMRadio] Murch Differential "T" Transmatch

Rob Atkinson ranchorobbo at gmail.com
Thu Sep 25 16:18:04 EDT 2014

On Thu, Sep 25, 2014 at 10:53 AM, rbethman <rbethman at comcast.net> wrote:
> Has anyone had success with making one of these into a "PI" network Antenna
> Matchbox?

I've learned the hard way that it is better to start from scratch and
homebrew with decent hamfest parts.

> The current offerings by MFJ that will handle that power output level are
> *also* a Differential "T" network.

Ts are high pass.  I'd avoid them.

> It isn't exactly as though anyone wants to let go of their E. F. Johnson KW
> Matchbox.

They show up at hamfests and on ebay.  It's not clear to me if you
want a balanced network or an unbalanced one.



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