BA4JWC QuanSheng UVK5 and KT-8900 from QuanYitong – the former likely refers to a "K" head, while the latter is unknown.
PPPPPAN The front panel has three TTL connectors, but I've forgotten the order of the lines. You can try it yourself.
BA4JWC PPPPPAN Thank you, the chassis has been downloaded. Is there original QuanSheng K5 software available?