chinese radio

I find I am confused by how the squelch tail is handled by commercial vs. inexpensive Chinese radios (Baoefeng, Radtel, etc.). I find that when I interact with my local repeater, which uses an Receive CTCSS and Transmit CTCSS, my commercial radios (APX6000, XTS2500, Tait TP9600) do not produce...

The QX6666 (v2.01) software for the Anytone AT-6666 and sister radios isn't very well documented. Actually, it isn't documented at all. It's pretty basic, and most of it is similar to other Chinese programming software. What I'm stumped on is a "Work Group" selection in the Channel Information...