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UV3R UV3R+ Audio Mod - Miklor
https://miklor.com/UV3R/UV3R-AudioMod.php
Baofeng UV-3R, 3R+ Audio Level Modification Modification requires a Steady Hand but well worth the effort. One common concern is the loud audio level of the UV-3R(+) Modification is best shown with this YouTube videoby VE2CUY Although the video shows a 47k resistor, I personally used a 33k to cut the volume back just a bit more.
Baofeng Modifications UV-3R. - Desert Projects
http://desertprojects.com/public/documents/baofeng/baofengmod.html
Baofeng Modifications UV-3R. Here is the open frequency mod for the Baofeng UV-3R, I will add other information as I come across it. Edit the following file in the UV-X4 installation folder, software can be downloaded off the net or from my software page. I have tried this mod with the Master UV-200 but it still only allows the normal frequency allocation.
Baofeng UV-3R+ Loud audio modification - YouTube
https://www.youtube.com/watch?v=pLTSg8BD96g
I found like many other UV-3R(+) users that the audio level is way to loud at the lowest setting and the steps aren't even.I found a modification on Miklor.c...
mods.dk -> OTHER -> MISC -> Baofeng uv-3r audio mod
https://www.mods.dk/view.php?ArticleKey=b02d46e8a3d8d9fd6028f3f2c2495864
It's a fairly simple mod, As you will see in the schematic there are two 470ohm resistors one is the power supply for the condenser mic, the other is an att
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