I just got it and tested it out. I successfully connected to the local repeater on VHF, and the feedback was very clear. It also works well for listening to aviation frequencies, although there is some background noise. Compared to my Yaesu FT-70D, the sound quality isn't as clear, but it's better than many other handheld radios. I couldn't receive any signals in the HF band, possibly because I was indoors. I'll try it outdoors tomorrow. I can't hear NOAA weather broadcasts, but I can tune to this frequency and listen, which is a bit strange. Also, I found that only A can receive HF; when placed below B, it only starts from Airband, which is frustrating.
I bought the TK11.(5)Apparently, only the battery is different, with a capacity of 2500. This is because mine is an export-oriented model, so it doesn't have Chinese menus or voice prompts.