Kenwood TK-2140 User manual

VHF FM TRANSCEIVER
TK-2140
©2001-10 PRINTED IN JAPAN
B51-8602-00 (S) 1022
SERVICEMANUAL
GENERAL ................................................................................. 2
SYSTEM SET-UP ..................................................................... 2
OPERATING FEATURES......................................................... 3
REALIGNMENT ........................................................................ 4
CIRCUIT DESCRIPTION .......................................................... 6
SEMICONDUCTOR DATA ..................................................... 12
DESCRIPTION OF COMPONENTS....................................... 13
PARTS LIST............................................................................ 14
EXPLODED VIEW .................................................................. 21
PACKING ................................................................................ 22
ADJUSTMENT........................................................................ 23
TERMINAL FUNCTION .......................................................... 32
PC BOARD VIEWS
TX-RX UNIT (X57-6400-10) ................................................ 33
SCHEMATIC DIAGRAM ......................................................... 43
BLOCK DIAGRAM .................................................................. 47
LEVEL DIAGRAM ................................................................... 49
KSC-25.................................................................................... 50
KNB-24L,KNB-25A,KNB-26N,KRA-22.................................... 53
SPECIFICATIONS ...............................................BACK COVER
CONTENTS
Knob (ENC)
(K29-9134-03)
Knob (VOL)
(K29-9133-03)
Cabinet assy
(A02-3653-04)
Knob (PTT)
(K29-9131-03)
Antenna
(KRA-22:option)
Key top
(SW1,SW2)
(K29-9132-03)
Does not come with antenna.
Antenna is available as an option.
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33
TK-2140
PC BOARD VIEW
TX-RX UNIT (X57-6400-10) Component Side View
Component side
Foil side
Pattern 1
Pattern 2
Pattern 3
Pattern 4
5TC
MMUTE
5CNS
AFSTB
AFREG1
AFREG2
AFDET
CLK
AFMSKE
AFTRD
AFRTM
AFRDT
AFCLR
GND
XOUT
C555
C554
R501
R503
R507
R502
C501
C502
C503
C504
S600
PTT
S601
SW1
S602
SW2
CN500
1
1516
30
5C
GND
MICI
PTT
ME
ME
TXHSD
GND
TXAF
RXAFI
5RC
HSDIN
RXAFO
GND
GND
J72-0806-09
B/3
J72-0806-09
C/3
Pattern 5
Pattern 6
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TK-2140
General
Frequency Range
RX, TX..............................................................................K : 136 to 174MHz
Systems ...........................................................................Trunked Mode : Maximum 32
Groups .............................................................................Maximum 250
Channels ..........................................................................Trunked Mode : Maximum 600
Conventional Mode : Maximum 250
Channel Spacing (Wide/Narrow)......................................25kHz, 30kHz/12.5kHz, 15kHz
PLL Channel Stepping .....................................................2.5, 5.0, 6.25, 7.5kHz
Operating Voltage ............................................................DC 7.5V ±20%
Battery Life .......................................................................About 9 hours at 5-5-90 duty cycle with KNB-24L battery
About 8 hours at 5-5-90 duty cycle with KNB-25A battery
About 12 hours at 5-5-90 duty cycle with KNB-26N battery
Temprature Range ...........................................................–30˚C to +60˚C (-22˚F to + 140˚F)
Dimension and Weight
With KNB-24L (1400mAh battery).................................4.13” (105mm) H x 2.21” (56mm) W x 1.16” (29.5mm) D x 0.66lbs (300g)
Receiver (Measurements made per TIA/EIA-603)
RF Input Impedance.........................................................50Ω
Sensitivity
12dB SINAD (Wide/Narrow)..........................................0.25µV/0.28µV
Selectivity (Wide/Narrow)................................................ 70dB/65dB
Intermodulation (Wide/Narrow) ........................................70dB/65dB
Spurious ...........................................................................70dB
Frequency Stability...........................................................±0.00025% (-30˚C to +60˚C)
Channel Spread ...............................................................38MHz : K
Audio Power Output .........................................................500mW at 16Ωless than 5% distortion
Transmitter (Measurements made per TIA/EIA-603)
RF Power Output
Hi ...................................................................................5W
Low................................................................................1W
RF Output Impedance...................................................... 50Ω
Spurious ...........................................................................70dB
Modulation (Wide/Narrow) ...............................................16K0F3E/11K0F3E
FM Noise (Wide/Narrow)..................................................45dB/40dB
Audio Distortion................................................................Less than 3%
Frequency Stability...........................................................±0.00025% (-30˚C to +60˚C)
Channel Spread ...............................................................38MHz : K
SPECIFICATION
KENWOOD CORPORATION
14-6, Dogenzaka 1-chome, Shibuya-ku, Tokyo 150-8501, Japan
KENWOOD SERVICE CORPORATION
P.O. BOX 22745, 2201 East Dominguez Street, Long Beach, CA 90801-5745,
U.S.A.
KENWOOD ELECTRONICS CANADA INC.
6070 Kestrel Road, Mississauga, Ontario, Canada L5T 1S8
KENWOOD ELECTRONICS DEUTSCHLAND GMBH
Rembrücker Str. 15, 63150 Heusenstamm, Germany
KENWOOD ELECTRONICS BELGIUM N.V.
Leuvensesteenweg 248 J, 1800 Vilvoorde, Belgium
KENWOOD ELECTRONICS FRANCE S.A.
13, Boulevard Ney, 75018 Paris, France
KENWOOD ELECTRONICS U.K. LIMITED
KENWOOD House, Dwight Road, Watford, Herts., WD1 8EB United Kingdom
KENWOOD ELECTRONICS EUROPE B.V.
Amsterdamseweg 37, 1422 AC Uithoorn, The Netherlands
KENWOOD ELECTRONICS ITALIA S.p.A.
Via G. Sirtori, 7/9 20129 Milano, Italy
KENWOOD IBERICA S.A.
Bolivia, 239-08020 Barcelona, Spain
KENWOOD ELECTRONICS AUSTRALIA PTY. LTD.
(A.C.N. 001 499 074)
16 Giffnock Avenue, Centrecourt Estate, North Ryde, N.S.W. 2113, Australia
KENWOOD ELECTRONICS (HONG KONG) LTD.
Unit 3712-3724, Level 37, Tower one Metroplaza, 223 Hing Fong Road, Kwai Fong, N.T.,
Hong Kong
KENWOOD ELECTRONICS TECHNOLOGIES(S) PTE LTD.
Sales Marketing Division
1 Ang Mo Kio Street 63, Singapore 569110
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VHF FM TRANSCEIVER
TK-2140
©2001-11 PRINTED IN JAPAN
B51-8614-00 (S) 1022
SERVICEMANUAL
REALIGNMENT
Clone Mode ......................................................................... 2
Self Programming Mode...................................................... 2
CONTENTS
Does not come with antenna.
Antenna is available as an option.
ADDENDUM
This addendum adds important information
on the Clone and Self-Programming mode
of the TK-2140 transceiver.
KENWOOD CORPORATION
14-6, Dogenzaka 1-chome, Shibuya-ku, Tokyo 150-8501, Japan
KENWOOD SERVICE CORPORATION
P.O. BOX 22745, 2201 East Dominguez Street, Long Beach, CA 90801-5745, U.S.A.
KENWOOD ELECTRONICS CANADA INC.
6070 Kestrel Road, Mississauga, Ontario, Canada L5T 1S8
KENWOOD ELECTRONICS DEUTSCHLAND GMBH
Rembrücker Str. 15, 63150 Heusenstamm, Germany
KENWOOD ELECTRONICS BELGIUM N.V.
Leuvensesteenweg 248 J, 1800 Vilvoorde, Belgium
KENWOOD ELECTRONICS FRANCE S.A.
13, Boulevard Ney, 75018 Paris, France
KENWOOD ELECTRONICS U.K. LIMITED
KENWOOD House, Dwight Road, Watford, Herts., WD1 8EB United Kingdom
KENWOOD ELECTRONICS EUROPE B.V.
Amsterdamseweg 37, 1422 AC Uithoorn, The Netherlands
KENWOOD ELECTRONICS ITALIA S.p.A.
Via G. Sirtori, 7/9 20129 Milano, Italy
KENWOOD IBERICA S.A.
Bolivia, 239-08020 Barcelona, Spain
KENWOOD ELECTRONICS AUSTRALIA PTY. LTD.
(A.C.N. 001 499 074)
16 Giffnock Avenue, Centrecourt Estate, North Ryde, N.S.W. 2113, Australia
KENWOOD ELECTRONICS (HONG KONG) LTD.
Unit 3712-3724, Level 37, Tower one Metroplaza, 223 Hing Fong Road, Kwai Fong,
N.T., Hong Kong
KENWOOD ELECTRONICS TECHNOLOGIES(S) PTE LTD.
Sales Marketing Division
1 Ang Mo Kio Street 63, Singapore 569110
[Tuning control knob]
[Side 1] key
[Side 2] key
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