Where did you hear that? I have a Yaesu and haven't noticed that. I suspect it means in the audio range and could very well be due to running the filters W-I-D-E open on TX and pushing the audio too hard. Again, I never had an issue nor have I heard of this complaint before.
I'm not a Yaesu fan but that has nothing to do with believing any of the reviews on eHam or any of the rest of those forums. At the very best they are only opinions by people who in general have no idea about what they are talking about. That's a generalization in it's self, but I've found it comes closer than I wanna believe.
For what it's worth, I haven't heard any of those stories about 'raspiness' with Yaesu either. Nor have I heard any raspiness.
- 'Doc
But that is just the opinion of someone that has no idea what he is talking about. I mean generally speaking. Right Doc. JK