DJ-180
DJ-1400
Service Manual
CONTENTS
SPECIFICATIONS PC BOARD VIEW
1) General 2 1) VCO Unit 24
2) Transmitter. 2 2) JACK Unit 24
3) Receiver 2 3) PTT Unit Side B 24
4) Functions for Each Version 3 4) PS Unit 25
CIRCUIT DESCRIPTION 5) ROM1 Unit Side B 25
1) Receiver System 4 6) ROM2 Unit Side B 25
2) PLL VCO Circuit. 5 7) RF Unit Side A 26
3) Transmitter System 5 8) RF Unit Side B 27
4) DTMF Encoder Circuit (option). 6 9) CPU Unit Side A. 28
5) Tone...
DJ-180
DJ-1400
Service Manual
CONTENTS
SPECIFICATIONS PC BOARD VIEW
1) General 2 1) VCO Unit 24
2) Transmitter. 2 2) JACK Unit 24
3) Receiver 2 3) PTT Unit Side B 24
4) Functions for Each Version 3 4) PS Unit 25
CIRCUIT DESCRIPTION 5) ROM1 Unit Side B 25
1) Receiver System 4 6) ROM2 Unit Side B 25
2) PLL VCO Circuit. 5 7) RF Unit Side A 26
3) Transmitter System 5 8) RF Unit Side B 27
4) DTMF Encoder Circuit (option). 6 9) CPU Unit Side A. 28
5) Tone...
DJ-190Service ManualCONTENTS +SPECIFICATIONS2 +CIRCUIT DESCRIPTION3 +SEMICONDUCTOR DATA9 +EXPLODED VIEW15 +PARTS LIST18 +ADJUSTMENT21 +PCBOARD VIEW26 +CIRCUIT DIAGRAM36 +BLOCK DIAGRAM43ALINCO INCORPORATEDTWIN 21 M.I.D. TOWER BUILDING 23F, 1-61, 2-CHOME,
SHIROMI CHUO-KU , OSAKA, 540-8580 JAPAN
Tel (81)6-6946-8150 fax (81)6-6946-8175e-mail: [email protected]
DJ-190Service ManualCONTENTS +SPECIFICATIONS2 +CIRCUIT DESCRIPTION3 +SEMICONDUCTOR DATA9 +EXPLODED VIEW15 +PARTS LIST18 +ADJUSTMENT21 +PCBOARD VIEW26 +CIRCUIT DIAGRAM36 +BLOCK DIAGRAM43ALINCO INCORPORATEDTWIN 21 M.I.D. TOWER BUILDING 23F, 1-61, 2-CHOME,
SHIROMI CHUO-KU , OSAKA, 540-8580 JAPAN
Tel (81)6-6946-8150 fax (81)6-6946-8175e-mail: [email protected]
DJ-195
Service Manual
CONTENTS
SPECIFICATIONS
1) GENERAL ................................................................ 2
2) TRANSMITTER ........................................................ 2
3) RECEIVER ............................................................... 2
CIRCUIT DESCRIPTION
1) Receiver System .................................................. 3, 4
2) Transmitter System ................................................... 4
3) PLL Synthesizer Circuit...
DJ-195
Service Manual
CONTENTS
SPECIFICATIONS
1) GENERAL ................................................................ 2
2) TRANSMITTER ........................................................ 2
3) RECEIVER ............................................................... 2
CIRCUIT DESCRIPTION
1) Receiver System .................................................. 3, 4
2) Transmitter System ................................................... 4
3) PLL Synthesizer Circuit...
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CIRCUIT DESCRIPTION DJ-296T
1) Receiver System
The receiver system is a double superheterodyne system with a 30.85 MHz first IF and a 455
kHz second IF.
1. Front End
The received signal at any frequency in the 216.00 to 249.995 MHz range is passed through the
low-pass filter (L2, L3, L8, C2, C9, C10, C11, C62 and C189), high-pass filter (C56, C57,
C58, C61, L22, L25 and D15), and amplified by the RF amplifier (Q9). The signal from Q9 is
then passed through the tuning circuit (C12, C14, C65, C66,...
