The TMRF TS-990KP family of keypad is a user definable custom function keypad,
as described on Page 16-7 of the Kenwood TS-990 Manual.
Full setup instructions can be found on the same page of the manual.
The TMRF TS-990KP family permits 8 user macros to be defined and associated
with each function key, and enables functions not normally associated with the
front panel keys to be selected.
The keypad connects to the keypad jack on the rear of the radio with the supplied
The TMRF TS-990KPC has a clear body with black keys and the TMRF TS-990KPB
has a black body with black keys.