Tuesday, March 1, 2016

Baofeng UV-5R Low Volume Fix

When I first started transmitting with my UV-5R5, I would sometimes get reports of low volume.  I verified my transmit power was set to "WIDE" (Menu 5) but that didn't seem to matter.  I bought a speaker mic that solved the problem, but when I'm using it as pedestrian I don't want to always carry a speaker mic.

After some googling, I had heard that sometimes the tiny microphone hole gets blocked on the UV-5R.  If you look on the left-hand picture, you'll see how small that mic hole is.  The resolution to this is to either clear out the hole, or widen it.

I disassembled it according to this YouTube video and found that there's a rubber gasket behind the mic hole that has a larger opening than what is drilled in the plastic.  I got out the Dremel and widened the hole so it matched the size of the rubber gasket behind it.  Reassembled, and voila, I had a nice contact with no reports of low volume.