Kenwood TS-930S Instruction Manual page 35

other components are ICs. This unit functions to control
frequency, display and the PLL unit.
Besides, the frequency display can be performed to 10 Hz
by connecting terminal 8 on connector 8 of the digital unit
to the chassis (that is, by grounding).
Digital unit
(X50-1880-00) Antenna tuner
®
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Connect this terminal to the chassis.
7.2-5 Final unit (X56-1430-00)
This unit includes the transmitter power amplifiers. The
TS-930S outputs 100 W. Good IMD characteristics are
provides by using a 28 V supply. In the TS-9308S, the final
stage is comprised of two MRF422 motorola transistors
(collector dissipation 290 W) which are fan cooled.
7.2-6 Filter unit (X51-1280-00)
This removes unwanted spurious components such as har-
monics from the transmission signal. This unit also detects
VSWR to control ALC, and protection, and the SWR
indicator circuit.
7.2-7 Power supply unit (X43-1430-00)
This unit supplies all the other units or their on-board
regulators with regulated 28 V.
7.2-8 Switch unit (X41-1410-00)
The main front-panel switches and controls are mounted
on this unit to simplify wiring.
This consists of a tuner section and a control section. The
tuner section is « matching or T matching circuit which
consists of coils and two
variable capacitors,
driven by
motors. The control section detects the transmitter output
to antenna match, and controls the drive motors to main-
tain best match. ,
35