I picked up this radio, and it sounds like I'm talking through a sock or something. Very muffled transmit only audio. Anything I can do about this short of getting a speaker mic? Is this common? My other handheld does not have this problem. Should be very similar to a US TK-2202, I think. It's almost like something is covering the microphone hole, but there is nothing visible.
It's Chinese made. Explains a lot. Even though it may not look it the mic is probably a small button type that is glued into the case--or is on the circuit board away from the front of the radio. It probably has a bit of cloth covering it too.
Sorry to say that it's probably as good as its going to get. After all, you get what you pay for. You may want to get the speaker mike since its probably the only way to make it sound better.