Audible SWR meters seem to come and go-in and out of production. Circuits for adapting off-the-shelf meters have existed for many decades, however. Here is a simplified modern adapter usable with any SWR meter. Units modified to date include the MFJ-816 HF and the MFJ-812B VHF SWR meters described here, but any unit could be adapted. Why not make a talking version? Electrical speech devices provide mostly historical information. I don't wish to burn something up while listening to: "off scale," "5 to 1," "5. to 1," oops-followed by a smoke alarm. For me, the best use of an antenna tuning device occurs with dynamic feedback from the changing sound of a voltage controlled oscillator (VCO).
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