CHIRP

I bought a 4-band QYT KT-8900D a couple of months ago, and it has an unrecognized ID.
I added it to btech.py:

charles@charles:/usr/lib/python2.7/dist-packages/chirp/drivers$ diff btech.py.20181014 btech.py
216a217
> KT7900D_fp2 = "VC8632"
3685c3686
<     _fileid = [KT7900D_fp, KT7900D_fp1, QB25_fp, ]
---
>     _fileid = [KT7900D_fp, KT7900D_fp1, KT7900D_fp2, QB25_fp, ]

and it seems to work fine -- read, display, write.

For posterity...attached is the image I successfully downloaded from the radio. I compared a hex dump of it and another radio I bought last year (Hesenate UV-8900D) and there aren't a lot of differences.