Radio Shack Realistic DX-150 Service Manual Download | Manualshive

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SERVICE MANUAL

SOLID STATE FOUR BAND COMMUNICATIONS RECEIVER

MODEL DX-150

CAT. 20-150

A PRODUCT OF RADIO SHACK CORPORATION

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Summary of Contents for Realistic DX-150

Page 1: ...1 OF 28 SERVICE MANUAL SOLID STATE FOUR BAND COMMUNICATIONS RECEIVER MODEL DX 150 CAT 20 150 A PRODUCT OF RADIO SHACK CORPORATION...

Page 2: ...APH TITLE PAGE 1 0 SPECIFICATIONS 3 2 0 GENERAL ALIGNMENT INSTRUCTIONS 6 3 0 CHASSIS DIS ASSEMBLY DIAL CORD ASSEMBLY 9 4 0 WIRING DIAGRAM 16 5 0 CIRCUIT BOARD DIAGRAM 17 6 0 CIRCUIT SCHEMATIC DIAGRAM...

Page 3: ...6 MHz 2 Band B 1 55 4 5 MHz 3 Band C 4 5 13 MHz 4 Band D 13 30 MHz 1 3 BAND SPREAD The band spread system covers the following frequencies 1 80 Meter Band 3 5 4 MHz 2 40 Meter Band 7 7 3 MHz 3 20 Met...

Page 4: ...fier stage Q14 2SB77 2nd A F amplifier stage Q15 Q16 2SB370 A F power amplifier stage Q17 2SD147 D C regulator D1 1S73 Q1 protector for high level signal D2 1S73 R F A N L D3 1N34A A M detector D4 1N3...

Page 5: ...SWITCH FAST SLOW 7 OPERATION SWITCH REC STD BY 8 PHONES JACK 9 BAND SPREAD CONTROL 10 B F O PITCH 11 Power ON OFF A F GAIN CONTROL 12 BAND SELECTOR 13 ANTENNA TRIMMER 14 R F GAIN CONTROL 15 MAIN TUNIN...

Page 6: ...late See Item 3 1 CHASSIS DIS ASSEMBLY Fig 2 1 2 Knob function and its nominal position Tuning Dial 0 on Logical Scale Spread Dial V C Minimum A N L Switch OFF Mode Switch A M A V C Switch FAST OPR Sw...

Page 7: ...G Coupling Connect the cable of S G output through a dummy antenna between A1 and GND on the antenna terminal See Fig 9 B S G Frequency Three points characteristic alignment should be required on eac...

Page 8: ...rs for high end of band 5 B F O ALIGNMENT NOTE The non metallic alignment tool is required for complete alignment The mode switch on the front panel should be positioned S S B C W A knob of the B F O...

Page 9: ...cord assembly seven of all control knobs five nuts of phone jack B F O pitch control A F gain control ANT trimmer and R F gain control should be replacement with front panel See FIG 2 2 3 4 1 Main tun...

Page 10: ...10 OF 28 FIG 1 1 FRONT VIEW OF DX 150 CHASSIS...

Page 11: ...11 OF 28 FIG 1 2 TOP VIEW OF DX 150 CHASSIS...

Page 12: ...12 OF 28 FIG 1 3 BOTTOM VIEW OF DX 150 CHASSIS...

Page 13: ...13 OF 28 FIG 2 1 CHASSIS DIS ASSEMBLY...

Page 14: ...14 OF 28 FIG 2 2 FIG 2 3 FIG 2 4...

Page 15: ...15 OF 28 FIG 3 MAIN TUNING DIAL CORD ASSEMBLY...

Page 16: ...16 OF 28 FIG 4 BANDSPREAD DIAL CORD ASSEMBLY...

Page 17: ...17 OF 28 4 0 WIRING DIAGRAM FIG 5 DX 150 MAIN CIRCUIT WIRING DIAGRAM BOTTOM VIEW...

Page 18: ...18 OF 28 5 0 CIRCUIT BOARD DIAGRAM FIG 6 DX 150 MAIN CIRCUIT BOARD DIAGRAM...

Page 19: ...19 OF 28 TOP BOTTOM FIG 7 DX 150 RF SUB CIRCUIT BOARD WIRING DIAGRAM TOP BOTTOM VIEW...

Page 20: ...20 OF 28 6 0 CIRCUIT SCHEMATIC DIAGRAM FIG 8 DX 150 SCHEMATIC DIAGRAM...

Page 21: ...1S73 D3 4 5 6 7 8 13 Diode 1N34A D9 Diode RD 6A D10 Diode RD 9A D11 12 Diode SW 05 Th1 2 Thermistor D 1E Th3 Thermistor M 10K T 1 2 3 I F T 6021A T66 CA 6163 T 4 6 I F T 6089A T68 CA 6167 T 5 B F O Co...

Page 22: ...e 0 5A FUSE Fuse Holder PL x 4 Pilot Lamp 8V 0 15A PL x 4 Pilot Lamp Lead type 8V 50mA PL x 4 Lamp Socket No 4108 A1 2 GND 3P Terminal 3 210 SPK Speaker 3 x 5 S METER C38 Electrolytic Capacitor 1uF 6V...

Page 23: ...5 7 Ceramic Capacitor 0 001uF C31 32 70 Ceramic Capacitor 0 005uF C58 Polyester Film Capacitor 15pF C39 12 Polyester Film Capacitor 30pF C1 53 Polyester Film Capacitor 50pF C11 51 Polyester Film Capac...

Page 24: ...68 Resistor 470 ohms W R19 R25 R43 R63 Resistor 5K ohms W R27 Resistor 2 5K ohms W R28 R36 R64 Resistor 7K ohms W R31 R47 R55 Resistor 30K ohms W R32 40 69 Resistor 500 ohms W R35 R60 Resistor 8 2K o...

Page 25: ...ial Plate GE 11C 13 Dial String 180 cm 14 Dial Pointer GE 11C 549 1A 15 Spread Dial Pointer GE 11C 549 2A 16 A C cord 6 feet black U L Approved 17 Knob 30 Diameter 18 Knob 22 Diameter 19 Nylon Lug No...

Page 26: ...t GE 11C 602 for bar antenna 37 L Mount Bracket GE 11C 593 for P C board 38 L Mount Bracket GE 11C 538 A for VC 39 L Mount Bracket GE 11C 537 A for dial plate 40 Coil Mount Plate GE 11C 577 A 41 Net N...

Page 27: ...27 OF 28 FIG 9 TEST EQUIPMENT...

Page 28: ...unt it high and clear away from power lines trees and surrounding objects If you are interested in putting up an antenna for a specific frequency you can use the following formula to determine the wav...

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