RE: Z-Match Transmatch Circuit

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From: Rick Zabrodski (zabrodsk@med.ucalgary.ca)
Date: Thu May 11 1995 - 10:34:47 EDT


I have built the tuner in question. Works fine. Plan to use this design
in my own "personal" qrp omni box.

Dr. Rick Zabrodski BSc, MD, CCFP(E) * VE6GK
Email: zabrodsk@med.ucalgary.ca * NorCal 519 ARCI 7650 GQRP 8329
Phone 403-271-5123 Fax 403-225-1276 * "Power is no substitute for skill"
                                                                

On Thu, 11 May 1995 cebik@utkvx.utk.edu wrote:

> Those interested in the Z-Match may wish to look at the Winter, 1995
> Comunications Quarterly, pp 27-32, for Charles Lofgren, W6JJZ, "Beyond
> the Z-Match: The IBZ Coupler." JJZ uses a single coil assembly with
> switched taps, plus switching for single-ended and balanced output.
> IBZ="improved balance Z-match," because he adds a 1:1 balun at the input
> end to improve the balance of the output ("under some conditions"). The
> link-coupled coil assembly goes on a T-225-6 core. THe link capacitor is
> a BC variable, while the other capacitor is a 500 pF/section 4-section
> surplus unit with wide-spaced plates.
  
(You can switch in fixed capcitors if needed, I did this with my "protype")>


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