https://old.hacdc.org/index.php?action=history&feed=atom&title=HAM_HT_Baofeng_UV-3R_Mic-Volume 2026-05-07T12:22:20Z Revision history for this page on the wiki MediaWiki 1.39.3 https://old.hacdc.org/index.php?title=HAM_HT_Baofeng_UV-3R_Mic-Volume&diff=9820&oldid=prev 2013-10-24T16:32:31Z

<p>Created page with &quot;==Types== There are several things that can cause built in mic sensitivity to be inadequate. * some batches have mic gain that is too high caused by poorly adjusted trim pots ...&quot;</p> <p><b>New page</b></p><div>==Types==<br /> There are several things that can cause built in mic sensitivity to be inadequate.<br /> * some batches have mic gain that is too high caused by poorly adjusted trim pots<br /> * some have it too low due to the same reason<br /> * some have something wrong in the MCU that keeps the gain too low<br /> * some have misaligned case isolation bushing that cover the pin prick mic hole in the case<br /> <br /> ==Bushing/Case Fix==<br /> # invoke your inner caveman<br /> # remove the front panel of the case<br /> # widen the mic hole in the front panel to ~2mm or 3mm (a pocket knife does fine)<br /> # reassemble and test. if it works well stop here else keep going<br /> # remove the front case panel and remove the rubber boot over the electrilet mic.<br /> # use a knife or a hole punch to widen the hole without removing the entire flat face (which is there to help reduce vibrations in the case from getting to the mic).<br /> # reassemble and test if it didn&#039;t work it is probably something else or a combination of this and something else.</div>

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