Kenwood TS-440S Serivce Manual

KEN WOO D
T
S-440SPS-430SP-4a 0
SPECIFICATIONS 
2
HF TRANSCEIVE R
CONTENT
S
CIRCUIT DESCRIPTION 
4
SEMICONDUCTORS 
27
PARTS LIST 
3 5
PC BOARD SCHEMATIC DIAGRA M
SWITCH UNIT 
6 9
FILTER UNIT 
70, 7 1
PLL UNIT 
72, 7
3
RF UNIT 
74, 7 5
CONTROL UNIT

76, 7 7
DISPLAY UNIT 
76, 7 7
FINAL UNIT 
78
IF UNIT 
78, 7 9
AT UNIT 
80
DISASSEMBLY 
81
PACKING
 8 8
ADJUSTMENT 
8 9
LEVEL DIAGRAM 
10 1
BLOCK DIAGRAM 
10 3
OPTIO N
PS-50 
104
PS-430 
109
VS-1

1 1 1
SP-430  11 4
MB-430  11 4
AT-440 
11 4
YK-88S /S N 
11 4
YK-88C/CN

11 4
SCHEMATIC DIAGRAM

113

Kenwood TS-440S Specifications

General

Antenna Impedance	50 ohms
Supply Voltage	13.8 V DC
IF Rejection	More than 80 dB
Modes	SSB, CW, AM, FM
Power Output	100 W (SSB, CW), 40 W (AM), 25 W (FM)
Receiver Sensitivity	0.25 μV (10 dB S/N)
IF Frequencies	8.83 MHz, 455 kHz
Image Rejection	>70 dB
Current Drain	Transmit: 20 A
Selectivity	CW: 500 Hz (-6 dB)