Bird Wattmeter Mods and Element (slug) Repair

At Last! Reprinted here with permission of the ARRL is the November 2009 QST article
Due to recent attacks on this website, I am allowing only amateur radio operators requesting an account using their call sign as their username. An account allow you to post comments and/or questions here.

Useful but reversible Mods and projects for your Bird Model 43 Watt meter. This page also will contain links and papers regarding methods for Bird wattmeter element or slug repair. . The theory of operation and basic wattmeter design is described in the papers on the links to the right. Theory of directional couplers is described at
http://www.k9so.net/?q=node/11
and RF detector operation at
http://www.k9so.net/?q=node/10

A new addition "Wattmeter Element Repair", gives the basics of the two types of wattmeter elements and describes the interiors so that a repair may be attempted. This is a large file to download, but includes high resolution pictures of element interiors.

Contributions to the collective knowledge of element repair are solicited.

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