Kenwood TK-2180 Service Manual

© 2004-6 PRINTED IN JAPAN
B51-8689-00
(
N
)
961
VHF FM TRANSCEIVER
TK-2180
SERVICE MANUAL
GENERAL ...................................................2
SYSTEM SET-UP .......................................2
REALIGNMENT ..........................................3
DISASSEMBLY FOR REPAIR ....................5
CIRCUIT DESCRIPTION .............................7
SEMICONDUCTOR DATA .......................13
COMPONENTS DESCRIPTION ............... 14
PARTS LIST ..............................................16
EXPLODED VIEW..................................... 25
PACKING ..................................................26
ADJUSTMENT .........................................27
TERMINAL FUNCTION ............................ 39
PC BOARD
DISPLAY UNIT (X54-3470-XX) ............ 42
TX-RX UNIT (X57-6930-10) ................. 46
SCHEMATIC DIAGRAM
DISPLAY UNIT (X54-3470-XX) ............ 50
TX-RX UNIT (X57-6930-10) ................. 52
BLOCK DIAGRAM ....................................60
LEVEL DIAGRAM ..................................... 62
OPTIONAL ACCESSORIES
KNB-31A/32N/33L ...............................63
KSC-32 ..................................................63
SPECIFICATIONS ................. BACK COVER
CONTENTS
Cabinet assy
(A02-3848-03)
Cabinet assy
(A02-3847-03)
Knob (PTT)
(K29-9302-23)
Packing
(G53-1599-01)
Packing
(G53-1598-01)
Button knob (Side)
(K29-9303-03)
Front glass
(B10-2752-22)
Helical antenna
(KRA-22 : Option)
Knob (Volume)
(K29-9304-03)
Knob (CH selector)
(K29-9305-03)
TK-2180 K TK-2180 K2
Does not come with antenna.
Antenna is available as an option.

Kenwood TK-2180 Specifications

General Specifications

frequency range	136~174MHz
number of channels	Max. 512 channels total per radio
zone	Max. 128 per radio
channel spacing	Wide 5k : 25kHz, Wide 4k : 20kHz, Narrow : 12.5kHz
battery voltage	7.5V DC ± 20%

Battery

battery life with KNB-31A	Approx. 9 hours
battery life with KNB-32N	Approx. 14 hours
battery life with KNB-33L	Approx. 10 hours

Operating Environment

operating temperature range	–30°C~+60°C (–10°C~+60°C with KNB-32N or KNB-33L)
frequency stability	± 2.5ppm (–30°C~+60°C)
antenna impedance	50Ω

Receiver

sensitivity EIA 12dB SINAD	Wide 5k : 0.28µV, Wide 4k : 0.28µV, Narrow : 0.32µV
EN 20dB SINAD	Wide 5k : –3dBµV, Wide 4k : –3dBµV, Narrow : –2dBµV
adjust channel selectivity	Wide 5k : 73dB, Wide 4k : 73dB, Narrow : 63dB

Transmitter

RF power output	HI : 5W, LO : 1W
modulation limiting	Wide 5k : ± 5.0kHz at 25kHz, Wide 4k : ± 4.0kHz at 20kHz, Narrow : ± 2.5kHz at 12.5kHz
spurious emission	–36dBm ≤ 1GHz, –30dBm > 1GHz

Weight and Dimensions

dimensions with KNB-33L battery	58 x 136 x 33 mm
dimensions with KNB-31A or 32N battery	58 x 136 x 39.5 mm
weight	400 g with battery (KNB-33L), antenna (KRA-22) and belt-clip (KBH-11)