Manual for the Heathkit HW-101 SSB amateur radio transceiver. Manual ID: 595-1277-18 Topics: manual, radio, amateur radio, heathkit. Heathkit Manuals. Heathkit: dx 20 manual -texts. Eye 392 favorite 0 comment 0. Heathkit: dx 20 manual. Heathkit Manuals. Heathkit A 9a Audio Amplifier (schematic). SB-303 Assembly manual.zip: 19.800 Kbytes: SB-310 Service manual.zip: 3.631 Kbytes: SB-401 Manual.zip: 9.055 Kbytes: SB-500 2-Meter Transverter Schematic.zip. This is all the manuals for Heathkit. If you want to see manuals from other manufactories you can click on the manufactory menu in. Improving CW Reception on the SB-303, Jul 72, 21 2. The Heath SB-303 and CW Reception, May 73, 39 3. CW Sidetone for the SB-301, SB-303 and SB-301, Jul 79, 49 4. A Noise Blanker for the Heath SB-303 Receiver, Sep 79, 45 SB-401 80-10 Meter Transmitter 1. Connect the SB-303 Receiver's HF antenna input to an antenna and antenna input of another receiver capable of receiving WWV at 2.5 MHz, 5 MHz, or 10 MHz. If this is not possible, a receiver tuned to a standard broadcast station, operating at an even multiple of 100 kHz or 25 kHz, can be used. Turn the SB-303 Receiver's FUNCTION switch to 100. Parts are indexed by Heathkit Part Number, which is the hyphenated number like'123-456' listed in your assembly manual. You'll need your assembly manual to identify the parts you need and to do your own repairs. TO START YOUR SEARCH FOR VINTAGE PARTS, Click this button: Order a Vintage Part Then enter its Heathkit Part Number and click 'Find'.
Page 2
TABLE OF
INTRODUCTION .......................... 3
UNPACKING INSTRUCTIONS ................... 4
CIRCUIT BOARDS
Mixer-Bandpass Circuit Board
Parts List #1 ........................ 5
Step-By-Step Assembly ................. 6
Carrier Generator Circuit Board
Parts List #2 ................... .7 ...... 8
Step-By-Step Assembly ................... 10
CHASSIS PARTS MOUNTING
Parts List #3 ............................ 13
Step-By-Step Assembly
Parts Mounting-Chassis Bottom ................. 16
Coil Mounting-Chassis Top 21
Parts Mounting-Chassis Top 24
CHASSIS WIRING
Parts List #4 33
Step-By-Step Assembly
Preliminary WiringChassis Top 35
Preliminary Wiring-Chassis Bottom . , , 39
Parts Mounting On Carrier Generator Shield ........ 54
Wiring Carrier Generator Shield To Chassis ........ 55
Transformer Wiring ................. 63
Preliminary Wiring-Band Switch 64
FINAL WIRING
Parts List #5 ............................ 73
Step-ByStep Assembly
Dial Assembly 75
Parts Mounting-Front Panel ............ 78
Wiring Front Panel To Chassis ........... 79
Front Panel Mounting ............... 81
Final Wiring-Chassis Top ............. 82
Final Wiring-Chassis Bottom .............. 85
INITIAL TEST ........................... 87
ALIG N ME NT
Alignment with 515-303 Receiver As A Transceiver 90
8.6 Megahertz Trap .............. 90
21 Megahertz Trap 90
Carrier Generator 90
Driver 91
8.6 Megahertz Trap Adjustment 92
Carrier Null Adjustment ........... 93
Neutralizing 94
Final Bias 94
Microphone Connection llllllllllll 95
LMO Adjustment , 95
Final Transmitter Adjustment 96
Alignment With SBA-4014 Crystal Accessory Kit Installed
Crystal Installation .............. 96
Equipment Required lllllll -™ ..... 97
8.6 Megahertz Trap .............. 97
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CONTENTS
21 Megaliertz Trap ....................... 97
Heterodyne Oscillator ................... 97
Carrier Generator 97
Driver 98
8.6 Megahertz Trap Adjustment 99
Carrier Null Adjustment ............... 99
Neutralizing 99
Final Bias 100
Microphone Connection .............. 101
LMO Adjustment .................. 101
Frequency Shift Adjustment ............. 102
Final hansmitter Adjustment 102
FINAL ASSEMBLY ......................... 103
INSTALLATION AND OPERATION ................. 105
Meter Readings ................... 108
Reading Transmitter Frequency 108
Operating Conditions 109
Transmitter Operation .................. 109
Operation With SB~303 Receiver ........ . . . i 109
CW ...................... l 10
SSE ...................... l l l
Transmitter Operation Only ......... . . . . 112
CW Tune-Up ................. ll 3
$53 Tune-Up .......................... 115
IN CASE OF DIFFICULTY ..................... 117
Troubleshooting Chart .............. 113
Factory Repair Service .............. 120
SPECIFICATIONS ......................... 121
CIRCUIT DESCRIPTION
Schematic Diagram ....................... 125
Frequency Chart .............. 125
Audio Preamplifier And Cathode Follower 126
VOX Amplifier ............... I26
Relay And Anit-VOX Amplifier
Tone Oscillator And Tone Ampliï¬er
LSB-USBCW Carrier Generator And
Cathode Follower ............
Balanced Modulator .........
Isolation Ampliï¬er
Symmetrical Crystal Bandpass Filter
Linear Master Oscillator
LMO Mixer .............
Heterodyne Oscillator And Heterodyne-Oscillator
Amplifier
Heterodyne Mixer
Driver
Final Amplifiers
Automatic Level Control
Power Supply
Metering Circuits
CIRCUIT BOARD X-RAY VIEWS
Heathkit Sb 303 Manual Model
CHASSIS PHOTOGRAPHS ...........
SCHEMATIC ..... (fold-out from Page) ..... 147
Heathkit Sb 303 Manual Download
REPLACEMENT PARTS PRICE LIST 148
HEATHKIT®