Kenwood TK-372G User Manual

UHF FM TRANSCEIVER
TK-372G
© 2000-11 PRINTED IN JAPAN
B51-8561-00(S) 790
SERVICE MANUAL
GENERAL ......................................................................2
SYSTEM SET-UP ..........................................................2
OPERATING FEATURES.............................................. 3
REALIGNMENT .............................................................7
DISASSEMBLY FOR REPAIR..................................... 15
CIRCUIT DESCRIPTION ............................................. 16
SEMICONDUCTOR DATA .......................................... 20
DESCRIPTION OF COMPONENTS............................ 22
PARTS LIST................................................................. 23
EXPLODED VIEW ....................................................... 31
PACKING ..................................................................... 32
CONTENTS
Antenna
(KRA-15: Option)
ADJUSTMENT ............................................................. 33
PC BOARD VIEWS
DISPLAY UNIT (X54-3250-10)............................... 45
TX-RX UNIT (X57-588X-XX) .................................. 47
SCHEMATIC DIAGRAM .............................................. 53
BLOCK DIAGRAM ....................................................... 57
LEVEL DIAGRAM ........................................................ 59
KNB-14/KNB-15A (Ni-Cd BATTERY) .......................... 60
OPTIONS ..................................................................... 61
SPECIFICATIONS ................................... BACK COVER
Knob (ENC)
(K29-5331-03)
Knob (VOL)
(K29-5332-03)
Cabinet assy
(A02-3568-23)
Knob (PTT)
(K29-5334-13)
Key top
(K29-9043-02)
Knob (Side1)
(K29-5333-13)

Kenwood TK-372G Specifications

Frequency and Channels

frequency range	450~470MHz (K) 470~490MHz (K2) 490~512MHz (K3) 403~430MHz (K4)
number of channels	Max. 32
channel spacing	25kHz (Wide) 12.5kHz (Narrow)
PLL channel stepping	5kHz, 6.25kHz

Battery and Power

operating voltage	7.5 VDC ±20%
battery life with KNB-14 battery	More than 4 hours at 5 watts (5-5-90 duty cycle)
battery life with KNB-15A battery	More than 8 hours at 4 watts (5-5-90 duty cycle)

Operating Environment

operating temperature range	-30˚C to +60˚C (-22 ˚F to +140 ˚F)
frequency stability	±2.5ppm
channel frequency spread	20MHz (K, K2) 22MHz (K3) 27MHz (K4)

Receiver Specifications

sensitivity EIA 12dB SINAD	0.25µV (Wide)/0.28µV (Narrow)
selectivity	70dB (Wide)/65dB (Narrow)
intermodulation	65dB (Wide)/60dB (Narrow)
spurious response	60dB
audio power output	500mW

Transmitter Specifications

RF power output	4W/1W
spurious and harmonics	70dB
modulation	16KφF3E (Wide)/11KφF3E (Narrow)
FM noise	45dB (Wide)/40dB (Narrow)
audio distortion	Less than 5%

Weight and Dimensions

dimensions with KNB-14	58 W x 135 H x 32 D mm
weight with KNB-14	400g
dimensions with KNB-15A	58 W x 135 H x 35 D mm
weight with KNB-15A	440g