Kenwood TS-440S User Manual

Page 2

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Thank you for purchasing the new TS-440S tran

sceiver. Please read this instruction manual carefully

before placing your transceiver in service. This unit has

been carefully engineered and manufactured to rigid

quality standards, and should give you satisfactory and

dependable operation for many years.

The following explicit definitions apply in this manual:

Note:

If disregarded, inconvenience only, no risk

of equipment damage or personal injury.

Caution:

Equipment damage may occur, but not per

sonal injury.

This

Instruction

Manual

covers

the

TS-440S,

with

and

without

(Automatic

Antenna

Tuner)

unit.

When

there

are

differences

operation, separate instructions will be given for

each

model.

Illustrations

show

the

TS-440S

with AT unit.

CONTENTS

1. FEATURES.............................................................. 3

2. INSTALLATION........................................................ 4

2-1. PRECAUTIONS.................................................... 4
2-2. FIXED STATION................................................... 4

2-2-1. Interconnection................................................ 4
2-2-2. Grounding........................................................ 4
2-2-3. Antenna........................................................... 5
2-2-4. Key connection................................................ 5

2- 3. MOBILE............................................................ 5

2-3-1. Mounting bracket installation ........................... 5
2- 3-2. Power supply connection............................. 5

3. OPERATION............................................................ 6

3- 1. OPERATING CONTROLS................................ 6

3- 1-1. Front panel.................................................. 6
3-1-2. Rear panel..................................................... 10
3-1-3. Top cover....................................................... 11

3-2. RECEIVE............................................................ 12

3-2-1. Initial setting.................................................. 12
3-2-2. CW zero-beat operation................................ 12
3-2-3. Direct keyboard frequency entry................... 13
3-2-4. AM reception................................................. 13

3-3. TRANSMIT......................................................... 13

3-3-1. SSB (LSB, USB) mode................................. 13
3-3-2. CW mode...................................................... 14

(a) Semi-automatic break-in........................ 14
(b) Full-automatic break-in.......................... 14

3-3-3. FM mode ...................................................... 14

• Subaudible tone........................................ 15

3-3-4. AM mode....................................................... 15

3-4. AUTOMATIC ANTENNA TUNER ...................... 15
3-5. DUAL DIGITAL VFO's........................................ 15

3-5-1. Why two VFO's.............................................. 15
3-5-2. Split frequency.............................................. 15

(a) A = B switch........................................... 1 5
(b) A/B switch............................................... 1 5
(c) SPLIT switch......................................... 15
(d) T-F SET switch...................................... 15

3-6. MEMORY ........................................................... 16

3-6-1. Memory entry.................................................. 16
3-6-2. Transferring memory information to the

VFO............................................................. 16

3-6-3. Transferring data between memory

channels...................................................... 17

3-6-4. Entering/Transferring data in the split

frequency channels..................................... 17

3-6-5. Clearing a memory channel...................... 17
3-6-6. Memory recall........................................... 17

3-7. SCAN .................................................................. 17

3-7-1. Memory scan............................................ 17
3-7-2. Program scan............................................ 18
3-7-3. Scan speed................................................... 18
3-7-4. Memory channel lockout............................... 18

3-8. AFSK.................................................................. 19

3-8-1. Reception....................................................... 19
3-8-2. Transmit........................................................ 19
3-8-3. AMTOR operation......................................... 19

3-9. OPERATION WITH A LINEAR AMPLIFIER.. 19

4. CIRCUIT DESCRIPTION ...................................... 20

4-1. GENERAL DESCRIPTION................................. 20
4-2. TRANSMITTER SECTION................................. 20
4-3. RECEIVER SECTION........................................ 20
4- 4. CIRCUIT BOARD DESCRIPTION.................. 20

4-4-1. RF unit (X44-1 680-00)................................. 20
4-4-2. IF unit (X60-1300-00).................................... 20
4-4-3. Control unit (X53-1450-00)............................ 20
4-4-4. PLL unit (X50-2050-00)................................. 20
4-4-5. Final unit (X45-1470-00)............................... 20
4-4-6. Filter unit (X51-1 340-00).............................. 20
4- 4-7. AT (Automatic Antenna Tuner) unit

(X 57-1150-00)............................................ 20

5. MAINTENANCE AND ADJUSTMENT................... 21

5- 1. GENERAL INFORMATION ........................... 21
5-2. SERVICE............................................................ 21
5-3. CLEANING.......................................................... 21
5-4. IN CASE OF DIFFICULTY.................................. 21
5-5. MICROPROCESSOR BACK-UP

LITHIUM BATTERY......................................... 22

5-6. MICROPROCESSOR RESET........................... 22
5-7. ORDERING SPARE PARTS.............................. 22
5- 8. ADJUSTMENTS............................................. 23

5- 8-1. Cover removal.......................................... 23
5-8-2.

Internal views........................................... 23

5-8-3.

Digital display calibration.......................... 24

5-8-4. Optional 10 Hz display resolution................. 24
5-8-5. CW zero beat frequency selection................ 24
5-8-6.

Side tone level.......................................... 25