NEC DTU-70 Instruction Manual page 49

SECTION. 3 FUNCTIONAL DESCRIPTION
This section furnishes the operator with sufficient information pertaining to the functions of
the DTU-70D series by reference to the circuit sections introduced in 2-5, as well as to the block
diagram of Fig. 3-1.
EXCITER
TS
CIRCUITS
See 3-1
TRANSMITTER
Power
Supply
Fig. 3-1 Simplified block diagram of digital transmitter
POWER
AMPLIFIER
See 3-2
C OOLI NG
CONTROL
SYSTEM
SYSTEM
See 3-3
See 3-5
3 - 1
GWP-G22996
OUTPUT
FILTER
To Antenna
See 3-4