I'd like to do the same with a Motorola hand mic but for my modern Yaesu FT-857D mobile radio. Please keep me in the loop.&nbsp;<div><br></div><div>73 de&nbsp;</div><div>Gene Smar AD3F&nbsp;<br><br><div id="ymail_android_signature">Sent from my Radio Shack TRS-80 model 100 laptop</div> <br> <blockquote style="margin: 0 0 20px 0;"> <div style="font-family:Roboto, sans-serif; color:#6D00F6;"> <div>On Fri, Apr 24, 2026 at 1:34 PM, Jason WA6BBQ via MRCA</div><div>&lt;mrca@mailman.qth.net&gt; wrote:</div> </div> <div style="padding: 10px 0 0 20px; margin: 10px 0 0 0; border-left: 1px solid #6D00F6;"> <div id="yiv9354555774">I’m looking for schemes to connect said LMR mic to either carbon or crystal mic inputs. This is something W7QHO made reference to a few times, but obvs he’s not around to ask.&nbsp;<div><br></div><div>Yes, they’ll need 5 to 9v bias. Looking for examples of implementation.&nbsp;</div><div><br></div><div>Thanks and 73,</div><div>Jason WA6BBQ</div>
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