Kenwood TS-820S Instruction Manual page 30

CAR ASSV UNIT (X60-1000-00)
This is a crystal oscillator that functions as a carrier for the
generator during transmission and as a BFO for ring detec-
tion during reception The output is partly applied to the PLL
Unit and the COUNTER UNIT
DISPLAY UNIT (X54-1310-00) (TS-a20S TYPE ONLY)
This unit uses a 6 digit fluorescent indicator to indicate ope-
rating frequencies counted by the counter unit. All the digits
glow green to provide many hours of fatigue less operation.
~...
'...
-,. ~..
~1.
~
30