3
TABLE OF CONTENTS
1
GENERAL DESCRIPTION .................................................................................................................................................... 5
1.1
DX-3SP
–
I
NTERNAL
V
IEW
.................................................................................................................................................. 6
2
TECHNICAL SPECIFICATIONS .......................................................................................................................................... 7
3
UNPACKING ............................................................................................................................................................................ 9
3.1
O
PENING THE CARTON
......................................................................................................................................................... 9
3.2
O
PENING THE
DX-3SP
COVER
............................................................................................................................................. 9
3.3
I
NSTALLING THE TRANSFORMER
.......................................................................................................................................... 9
4
INSTALLATION ENVIRONMENT..................................................................................................................................... 10
4.1
R
EQUIRED ENVIRONMENT
.................................................................................................................................................. 10
4.2
P
OWER REQUIREMENTS
...................................................................................................................................................... 10
5
FRONT PANEL ...................................................................................................................................................................... 11
5.1
C
ONTROLS
......................................................................................................................................................................... 11
5.2
D
ISPLAYS
........................................................................................................................................................................... 11
6
REAR PANEL ......................................................................................................................................................................... 12
6.1
P
OWER
/
E
ARTH CONNECTIONS
.......................................................................................................................................... 12
6.2
RF
CONNECTIONS
............................................................................................................................................................... 12
6.3
T
RANSCEIVER CONTROL
..................................................................................................................................................... 12
7
ELECTRICAL CONNECTIONS .......................................................................................................................................... 13
7.1
C
ONNECTIONS TO
T
RANSCEIVER
/
E
XCITER
....................................................................................................................... 13
7.2
E
ARTH AND MAINS CONNECTIONS
...................................................................................................................................... 13
7.3
T
ERMINATING THE POWER CABLE
(
EXPORT VERSION
) ........................................................................................................ 13
7.4
O
PERATION AT
240V,
230V,
220V,
200V
(
EXPORT VERSION
) ........................................................................................... 13
8
DX-3SP DESCRIPTION ........................................................................................................................................................ 15
8.1
RF
S
ECTION
....................................................................................................................................................................... 15
8.2
M
AINS TRANSFORMER
........................................................................................................................................................ 15
8.3
H.
V.
P
OWER
S
UPPLY
......................................................................................................................................................... 15
8.4
S
OFT START MODULE
......................................................................................................................................................... 15
8.5
S
ENSOR MODULE
................................................................................................................................................................ 15
8.6
A
NTENNA RELAY
/
QSK
MODULE
...................................................................................................................................... 16
8.7
D
ISPLAY BOARD
................................................................................................................................................................. 16
8.8
C
ONTROL BOARD
............................................................................................................................................................... 16
9
POWERING UP ...................................................................................................................................................................... 17
10
OPERATION....................................................................................................................................................................... 17
10.1
TUNING
PROCEDURE ................................................................................................................................................... 17
10.1.1
General...................................................................................................................................................................... 18
10.1.2
Preliminary tuning .................................................................................................................................................... 18
10.1.3
Final tuning ............................................................................................................................................................... 19
10.1.4
Potential problems during tuning .............................................................................................................................. 20
10.2
USING
YOUR
DX-3SP .................................................................................................................................................... 20
10.2.1
CW / RTTY and all digital modes .............................................................................................................................. 20
10.2.2
Voice modes (SSB)..................................................................................................................................................... 20
10.2.3
Hints on good linearity and efficiency....................................................................................................................... 21
11
SWITCHING THE POWER OFF..................................................................................................................................... 21
