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SBE SB-36 OPERATION MANUAL
SB-36 OPERATION MANUAL
Remastered by NoobowSystems Lab. Tomioka, Japan 2003 Rev.00
http://www.noobowsystems.com
PRELIMINARY VERSION
NoobowSystems Lab. Tomioka, Japan 2003
http://www.noobowsystems.com/
Page 1 / 56

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Summary of Contents for SBE SB-36

  • Page 1 SBE SB-36 OPERATION MANUAL SB-36 OPERATION MANUAL Remastered by NoobowSystems Lab. Tomioka, Japan 2003 Rev.00 http://www.noobowsystems.com PRELIMINARY VERSION NoobowSystems Lab. Tomioka, Japan 2003 http://www.noobowsystems.com/ Page 1 / 56...
  • Page 2 SBE SB-36 OPERATION MANUAL WARRANTY Linear Systems, Inc. warrants equipment manufactured by it to be free from defects in material or workmanship and agrees to repair such equipment which under normal use and service, develops defects arising from the fault of the manufacturer. Equipment must...
  • Page 3 SBE SB-36 OPERATION MANUAL TABLE OF CONTENTS Paragraph Page Section I General Description General Specifications 1.2.1 General 1.2.2 Transmitter 1.2.3 Receiver Section II In starvation General Fixed Station Antennas Linear Amplifier Section III Operation Operation Instructions Section IV Operating Procedure...
  • Page 4: Table Of Contents

    SBE SB-36 OPERATION MANUAL Table of Contents 1.0 INTRODUCTION...........................5 1.1 GENERAL.............................5 1.2 SPECIFICATIONS........................5 1.2.1..........................General ..............................5 1.2.2..........................Transmitter ..............................6 2.0 INSTALLATION..........................7 2.1 GENERAL.............................7 2.2 FIXED STATION...........................7 2.3 ANTENNAS..........................7 2.4 LINEAR AMPLIFIER........................7 3.0 OPERATION..........................8 3.1 OPERATING INSTRUCTIONS.....................8 3.1.1.............................8 4.0 OPERATING PROCEDURE.......................14 WARNING:............................14 4.1 RECEIVER OPERATION......................14 4.
  • Page 5: Noobowsystems Lab. Tomioka, Japan 2003 Http://Www.noobowsystems.com

    SBE SB-36 OPERATION MANUAL 6. 0 MAINTENANCE.........................27 6. 1 INTRODUCTION........................27 6.2 PREVENTATIVE MAINTENANCE....................27 6.2.1..........................General ..............................27 6.2.2........................Cover Removal ..............................27 6.2.3..........................Cleaning ..............................27 6.2.4..........................Lubrication ..............................28 6.3 TROUBLESHOOTING........................28 6.3.1....................Troubleshooting Techniques ..............................28 6.3.2..................Voltage Table and Injection Points ..............................30 6.1.1............Receiver DC Voltages - No Signal Input - USB Mode ..............................30...
  • Page 6: Introduction

    The SB-36 Transceiver is a single sideband, suppressed carrier, digital read-out transceiver designed for the professional / amateur radio operator. The SB-36 is capable of operation in the SSB and CW modes of operation. Frequency coverage includes all amateur bands between 3.0 and 29.7 MHz.
  • Page 7: Specifications

    SBE SB-36 OPERATION MANUAL 1.2 SPECIFICATIONS 1.2.1 General Frequency Range 3.50 - 4.00 MHz 7.00 - 7.50 MHz 14.00 - 14.50 MHz 21.00 - 21.50 MHz 28.00 - 30.00 MHz Frequency Accuracy Nixie tube Read-out, accurate to within +100 Hertz...
  • Page 8 SBE SB-36 OPERATION MANUAL 1.2.3 Receiver Sensitivity 0. 5 microvolts for 10 db S+N/N Selectivity 2.4 kHz @6 db 4.2 kHz @60 db Spurious Response Image and IF responses down at least 50 db Stability 100 Hertz (or less) per 1/z hour under any normal...
  • Page 9: Installation

    2.4 LINEAR AMPLIFIER Any conventional linear amplifier requiring 300 watts of drive or less may be used in conjunction with the SB-36. An external jack on the rear panel provides relay control information to accessory linear amplifiers. Another external jack on the rear of the transceiver will accept ALC NoobowSystems Lab.
  • Page 10 SBE SB-36 OPERATION MANUAL feed-back information from the linear amplifier to control the power output of the transceiver. NoobowSystems Lab. Tomioka, Japan 2003 http://www.noobowsystems.com/ Page 10 / 56...
  • Page 11: Operation

    3.1.1 The front and rear panel controls, connectors and indicators used in operating the SB-36 are shown in Figures 3.1 and 3.2 and are described in Table 3.1. The descriptions given in the table are not intended to be operating instructions, but only a reference to determine the function of each stern.
  • Page 12: Noobowsystems Lab. Tomioka, Japan 2003 Http://Www.noobowsystems.com

    SBE SB-36 OPERATION MANUAL 3.1 OPERATING INSTRUCTIONS NoobowSystems Lab. Tomioka, Japan 2003 http://www.noobowsystems.com/ Page 12 / 56...
  • Page 13 SBE SB-36 OPERATION MANUAL Number Nomenclature Description RIT Push- On Switch The receiver incremental (RIT) is activated by depressing the PUSH-ON switch. RIT Lamp Wren the RIT PUSH-ON control is activated, the RIT Lamp will be lit. RIT Control Potentiometer varies the frequency of the VFO Oscillator, +7 kHz in the receive mode.
  • Page 14 SBE SB-36 OPERATION MANUAL Meter Switching The "METER" switch is used to select the desired parameter to be measured. The three functions of the switch are as follows; ALC: When transmitting, place the meter switch in the ALC position. This will help in determining the proper levels of microphone gain and ALC.
  • Page 15 WARNING: Do not change position of the "MHz" band selector when the SB-36 is keyed for transmit condition, as this will result in damage to the equipment, which is not covered by the warranty.
  • Page 16 The potentiometer that varies the attenuation of the speaker audio signal being applied to the ANTI-VOX amplifier circuit input. Its function is to adjust the threshold level of the modulated audio that keeps the SB-36 keyed for a receive condition. Phone Patch A connector which will accept phone patch information to "IN JACK"...
  • Page 17: Operating Procedure

    NOTE: If the RIT control is used, the Nixie tube read-out will indicate the exact frequency of the incoming signal. When the SB-36 is placed in the transmit mode, the Nixie tube read-out will revert back to the frequency selected when the RIT control was off.
  • Page 18: Cw Operation

    SBE SB-36 OPERATION MANUAL 4.2.6 Place the MODE switch to the TUNE position. 4.2.7 Place the VOX/REC-PTT/SEND switch to the SEND position. 4.2.8 Advance the MIG Gain Control slightly while tuning the PRESELECT control for maximum indication on the meter.
  • Page 19 SBE SB-36 OPERATION MANUAL 4.3.6 With the key depressed, adjust the CARR potentiometer (located on the rear panel of the unit) so the transmitter power output does not exceed 200 watts on 15 through 80 meters or 150 watts on 10 meters.
  • Page 20: Theory Of Operation

    5. 1 GENERAL 5.1.1 Figure 5.1 shows the basic transmitter receive signal paths and the printed circuit boards associated with each. The SB-36 Transceiver is comprised of a power amplifier assembly, accessory power supply, and one each of the following circuit boards:...
  • Page 21: Transmitter Circuitry

    Stage-by-Stage transmit signal path block diagrams is shown in Figure 5.1. Unless otherwise indicated in the following explanation, it is assumed that the SB-36 is operating in the Single Sideband Mode. Audio signals from the microphone connector or phone patch input jack are routed to TR-l located on the Microphone Amplifier and Side Tone Oscillator Board.
  • Page 22: Automatic Level Control

    SBE SB-36 OPERATION MANUAL by transistor TR-11. The output of mixer tube V-l is coupled to the grid of V-2, the driver tube. Output of tube V-2 is capacitively coupled to the input of the PA tubes, V-5 and V-6.
  • Page 23: Receiver Circuitry

    TR-7 during the presence of strong RF noise pulses. 5.3.3 Automatic Gain Control Automatic Gain Control (AGC) is employed in the SB-36 Transceiver to maintain a constant receive signal level passing through the front end and IF Amplifier Board. The AGC circuitry can be completely disabled by switching the front panel "AGC"...
  • Page 24: Vox Keying

    SBE SB-36 OPERATION MANUAL AGC circuit is located on the IF amplifier printed circuit board. Its controlling effects can be overridden by setting of the front panel "RF Gain" potentiometer VR-601. The AGC circuit provides two outputs with an increasing RF input signal level. First, the AGC voltage is applied to the control grid of V-4 the RF amplifier tube.
  • Page 25: Frequency Mixing Network

    The basic concept of the frequency mixing employed in the SB-36 Transceivers is show in Table 5.1. Table 5.1 shows the relationship of the 9 MHz carrier oscillator, VFO and HFO outputs for the various bands used in the SB-36 Transceiver. TABLE 5.1 SB-36 FREQUENCY CHART Band...
  • Page 26 <Figure 5.43 Block Diagram of Counter Unit > 5.3.5.3 High Frequency Oscillator The SB-36 has seven high frequency crystals used in the HFO oscillator circuitry. The relationship between the transceiver operating frequency and the HFO crystal frequency is shown on Table 5. 2.
  • Page 27: Side Tone Oscillator

    SBE SB-36 OPERATION MANUAL 5.3.5.4 Side Tone Oscillator Transistor TR-5 is a phase shift side-tone oscillator which operates when the mode switch is in either the CW or tune position. Frequency with phase shift oscillator is approximately 1000 kHz. The output of TR-5 is fed to the transmitter microphone audio circuit when the mode switch is in the TUNE position to provide a signal which will allow tune-up of the transmitter.
  • Page 28: Power Supply

    VFO is operating outside of a normal band. Table 5.2 shows the relationship between the various bands in the SB-36 Transceiver and functions of the band edge limit lights. TABLE 5.2 UPPER/LOWER RANGE LIMIT LIGHTS...
  • Page 29 AC power supply chassis. A block diagrams of the power supply circuit is shown in Figure 5.4. Table 5.3 shows pin connections for the power supply interconnect cable on the SB-36 Transceiver and the various voltages and currents required at each pin. TABLE 5.3 POWER SUPPLY REQUIREMENTS...
  • Page 30: Maintenance

    6.2.3 Cleaning A. Exterior. Loose dust accumulated on the outside cover of the SB-36 Transceiver and Power Supply can be removed with a soft cloth or squall paint brush. A paint brush is particularly useful for dislodging dirt on and around front panel controls.
  • Page 31: Lubrication

    SBE SB-36 OPERATION MANUAL cotton tipped applicator is useful for cleaning in narrow spaces and circuit boards. The high voltage circuits, particularly located in the PA assembly, should receive special attention. Excessive dirt in these areas may cause high voltage arcing and result in improper operation of the transceiver.
  • Page 32 SBE SB-36 OPERATION MANUAL and various modes. Perform a visual check for damaged wires, electrical and mechanical parts, and printed circuit boards. Check for loose interconnection between printed circuit boards. D. Check individual parts. The following procedure describes the method of checking individual parts.
  • Page 33: Voltage Table And Injection Points

    SBE SB-36 OPERATION MANUAL with a capacitance meter or by checking whether the capacitor passes AC signals. 6.3.2 Voltage Table and Injection Points Table 6.1 contains voltage measurements and injection levels to be used as an aid in isolating a defective stage or component.
  • Page 34 SBE SB-36 OPERATION MANUAL Table 6.1.2 Audio Amplifier DC Voltages Collector Base Emitter TR-25 7.2V 7.8V 0.6V TR-24 0.6V 8.8V TR-23 8.8V 9.4V TR-22 10.2V 9.7V 19.5V Table 6.1.3 20V Regulator DC Voltages Base Emitter Collector TR-45 21.5V 27.4V TR-46 21.7V...
  • Page 35 SBE SB-36 OPERATION MANUAL NoobowSystems Lab. Tomioka, Japan 2003 http://www.noobowsystems.com/ Page 35 / 56...
  • Page 36 SBE SB-36 OPERATION MANUAL SERVICE MAINTENANCE Should your SB-36 fail to perform as stated in this manual, it is recommended that SBE be contacted in writing. SBE will either authorize return of the unit to the factory or refer you to an authorized SBE repair agency in your area.
  • Page 37 SBE SB-36 OPERATION MANUAL FEP-501: MICROPHONE AMPLIFIER SIDE TONE OSCILLATOR PC BOARD PART NUMBER DESCRIPTION 8000-00010-009 Capacitor, Fixed, Electrolytic, 47µF, 25V 8000-00010-003 Capacitor, Fixed, Ceramic, 330pF, 50V 8000-00010-007 Capacitor, Fixed, Electrolytic, 10µF, 16v 8000-00010-007 Capacitor, Fixed, Electrolytic, 10µF, 16v 8000-00010-007 Capacitor, Fixed, Electrolytic, 10µF, 16v...
  • Page 38 SBE SB-36 OPERATION MANUAL FEP-502: DSB SSB AMPLIFIER AND NOISE BLANKER PC BOARD PART NUMBER DESCRIPTION 8000-00010-004 Capacitor, Fixed, Ceramic, 0.01µF, 50V 8000-00010-036 Capacitor, Fixed, Ceramic, 1000pF, 50V 8000-00010-032 Capacitor, Fixed, Styrol, 22pF, 50V 8000-00010-010 Capacitor, Fixed, Ceramic, 0.02µF, 50V 8000-00010-010 Capacitor, Fixed, Ceramic, 0.02µF, 50V...
  • Page 39 SBE SB-36 OPERATION MANUAL PART NUMBER DESCRIPTION 8000-00010-020 Diode, 1N60 8000-00010-020 Diode, 1N60 8000-00010-020 Diode, 1N60 8000-00010-020 Diode, 1N60 8000-00010-020 Diode, 1N60 Diode, 1N60 8000-00010-020 D205 8000-00010-020 Diode, 1N60 D206 Diode, 1N60 8000-00010-020 L601 8000-00010-039 Choke, RFC L602 8000-00010-039 Choke, RFC...
  • Page 40 SBE SB-36 OPERATION MANUAL FEP-503 DRIVER RF PRE MIXER AND OSCILLATOR PC BOARD PART NUMBER DESCRIPTION 8000-00010-050 Capacitor, Fixed, Ceramic, 30pF, 500V 8000-00010-048 Capacitor, Fixed, Ceramic, 5pF, 500V 8000-00010-054 Capacitor, Fixed, Ceramic, 0.01µF, 500V 8000-00010-048 Capacitor, Fixed, Ceramic, 5pF, 500V...
  • Page 41 SBE SB-36 OPERATION MANUAL PART NUMBER DESCRIPTION C674 8000-00010-053 Capacitor, Fixed, Ceramic, 0.005µF, 500V C675 8000-00010-053 Capacitor, Fixed, Ceramic, 0.005µF, 500V C677 8000-00010-049 Capacitor, Fixed, Ceramic, 10pF, 500V C678 8000-00010-054 Capacitor, Fixed, Ceramic, 0.01µF, 500V C679 8000-00010-054 Capacitor, Fixed, Ceramic, 0.01µF, 500V...
  • Page 42 SBE SB-36 OPERATION MANUAL FEP-504 CRYSTAL OSCILLATOR PC BOARD PART NUMBER DESCRIPTION 8000-00010-093 Coil, Oscillator, 28 MHz 8000-00010-094 Coil, Oscillator 8000-00010-094 Coil, Oscillator 8000-00010-095 Coil, Oscillator 8000-00010-095 Coil, Oscillator 8000-00010-097 Capacitor, Variable, 30pF 8000-00010-097 Capacitor, Variable, 30pF 8000-00010-097 Capacitor, Variable, 30pF...
  • Page 43 SBE SB-36 OPERATION MANUAL FEP-504A HF CRYSTAL PRINTED CIRCUIT PC BOARD DESCRIPTION PART NUMBER 8000-00010-084 Capacitor, Fixed, Ceramic, Trimmer, 30pF 8000-00010-084 Capacitor, Fixed, Ceramic, Trimmer, 30pF 8000-00010-084 Capacitor, Fixed, Ceramic, Trimmer, 30pF 8000-00010-084 Capacitor, Fixed, Ceramic, Trimmer, 30pF VC5A 8000-00010-084...
  • Page 44 SBE SB-36 OPERATION MANUAL FEP-505 VOX AND ANTI-TRIP PC BOARD PART NUMBER DESCRIPTION 8000-00010-007 Capacitor, Fixed, Electrolytic, 10µF, 16v C77A 8000-00010-007 Capacitor, Fixed, Electrolytic, 10µF, 16v 8000-00010-007 Capacitor, Fixed, Electrolytic, 10µF, 16v C78A 8000-00010-007 Capacitor, Fixed, Electrolytic, 10µF, 16v 8000-00010-007 Capacitor, Fixed, Electrolytic, 10µF, 16v...
  • Page 45 SBE SB-36 OPERATION MANUAL FEP-506 CARRIER OSCILLATOR PC BOARD PART NUMBER DESCRIPTION 8000-00010-121 Capacitor, Fixed, Mica, 100pF, 50V 8000-00010-122 Capacitor, Fixed, Mica, 200pF, 50V 8000-00010-119 Capacitor, Fixed, Mica, 27pF, 50V 8000-00010-120 Capacitor, Fixed, Mica, 47pF, 50V 8000-00010-010 Capacitor, Fixed, Ceramic, 0.02µF, 50V...
  • Page 46 SBE SB-36 OPERATION MANUAL FEP-508 RECEIVER IF AND AGC AMPLIFIER PC BOARD PART NUMBER DESCRIPTION C102 8000-00010-004 Capacitor, Fixed, Ceramic, 0.01µF, 50V C103 8000-00010-004 Capacitor, Fixed, Ceramic, 0.01µF, 50V C104 8000-00010-004 Capacitor, Fixed, Ceramic, 0.01µF, 50V C105 8000-00010-036 Capacitor, Fixed, Ceramic, 1000pF, 50V...
  • Page 47 SBE SB-36 OPERATION MANUAL PART NUMBER DESCRIPTION TR27 8000-00010-002 Transistor, 2SC458 TR28 8000-00010-016 Transistor, 2SK25 TR29 8000-00010-002 Transistor, 2SC458 VR12 8000-00010-161 Resistor, Variable, 1kΩ VR14 8000-00010-025 Resistor, Variable, 3kΩ VR53 8000-00010-026 Resistor, Variable, 10kΩ NoobowSystems Lab. Tomioka, Japan 2003 http://www.noobowsystems.com/...
  • Page 48 SBE SB-36 OPERATION MANUAL FEP-509 VFO PC BOARD PART NUMBER DESCRIPTION C120 8000-00010-131 Capacitor, Fixed, Mica, 5pF, 50V C121 8000-00010-136 Capacitor, Fixed, Mica, 250pF, 50V C122 8000-00010-113 Capacitor, Fixed, Ceramic, 5000pF, 50V C123 8000-00010-134 Capacitor, Fixed, Mica, 500pF, 50V C124...
  • Page 49 SBE SB-36 OPERATION MANUAL FEP-510 COUNTER PC BOARD PART NUMBER DESCRIPTION 8000-00010-097 Capacitor, Fixed, Mica, 330pF, 50V 8000-00010-097 Capacitor, Fixed, Mica, 330pF, 50V 8000-00010-097 Capacitor, Fixed, Mica, 330pF, 50V 8000-00010-097 Capacitor, Fixed, Mica, 330pF, 50V 8000-00010-097 Capacitor, Fixed, Mica, 330pF, 50V...
  • Page 50 SBE SB-36 OPERATION MANUAL PART NUMBER DESCRIPTION IC20 8000-00010-146 Integrated Circuit, FEP-502 IC21 8000-00010-147 Integrated Circuit, FEP-503 IC22 8000-00010-148 Integrated Circuit, FEP-504 IC23 8000-00010-148 Integrated Circuit, FEP-504 IC24 8000-00010-146 Integrated Circuit, FEP-502 IC25 8000-00010-148 Integrated Circuit, FEP-504 IC26 8000-00010-144 Integrated Circuit, FEP-500...
  • Page 51 SBE SB-36 OPERATION MANUAL FEP-511 5.6 MHz OSCILLATOR/UPPER AND LOWER LIMIT LIGHT PC BOARD DESCRIPTION PART NUMBER 8000-00010-162 Capacitor, Fixed, Mica, 30pF, 50V 8000-00010-010 Capacitor, Fixed, Ceramic, 0.02µF, 50V 8000-00010-121 Capacitor, Fixed, Mica, 100pF, 50V 8000-00010-059 Capacitor, Fixed, Mica, 250pF, 50V...
  • Page 52 SBE SB-36 OPERATION MANUAL DESCRIPTION PART NUMBER 8000-00010-171 Coil 8000-00010-172 Coil TR33 8000-00010-002 Transistor, 2SC458 TR34 8000-00010-002 Transistor, 2SC458 TR35 8000-00010-002 Transistor, 2SC458 TR36 8000-00010-002 Transistor, 2SC458 TR37 8000-00010-002 Transistor, 2SC458 TR38 8000-00010-002 Transistor, 2SC458 TR39 8000-00010-002 Transistor, 2SC458 TR40...
  • Page 53 SBE SB-36 OPERATION MANUAL FEP-531 POWER SUPPLY PC BOARD PART NUMBER DESCRIPTION C504 8000-00010-177 Capacitor, Fixed, Electrolytic, 100µF, 250V C505 8000-00010-178 Capacitor, Fixed, Electrolytic, 470µF, 16V C506 8000-00010-179 Capacitor, Fixed, Electrolytic, 1000µF, 35V C507 8000-00010-179 Capacitor, Fixed, Electrolytic, 1000µF, 35V...
  • Page 54 SBE SB-36 OPERATION MANUAL AC POWER SUPPLY CHASSIS DESCRIPTION PART NUMBER 8000-00010-073 Capacitor, Fixed, Electrolytic, 47µF, 500V 8000-00010-073 Capacitor, Fixed, Electrolytic, 47µF, 500V C50l Not Used C502 Not Used C503 8000-00010-073 Capacitor, Fixed, Electrolytic, 47µF, 500V C508 8000-00010-144 Capacitor, Fixed, Ceramic, 0.01µF, 1kV...
  • Page 55 SBE SB-36 OPERATION MANUAL SB-36 MAIN CHASSIS DESCRIPTION PART NUMBER 8000-00010-207 Capacitor, Fixed, Ceramic, 0.005µF, 500V 8000-00010-207 Capacitor, Fixed, Ceramic, 0.005µF, 500V 8000-00010-207 Capacitor, Fixed, Ceramic, 0.005µF, 500V 8000-00010-213 Capacitor, Fixed, Ceramic, 0.002µF, 3kV 8000-00010-189 Capacitor, Fixed, Ceramic, 0.01µF, 1.4kV...
  • Page 56 SBE SB-36 OPERATION MANUAL DESCRIPTION PART NUMBER VC25 8000-00010-224 Capacitor, Variable, 280pF VC35 8000-00010-227 Capacitor, Variable VC45 8000-00010-223 Capacitor, Variable, 10pF VR25 8000-00010-221 Resistor, Variable, 10kΩ VR35 8000-00010-219 Resistor, Variable, 1MΩ VR45 8000-00010-218 Resistor, Variable, 10kΩ VR503 8000-00010-216 Resistor, Variable, 100kΩ...

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