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Index to Volume 3: January-December 1990 Features 01/90 4 Checking VCR Tape-Loading Problems 01/90 10 Update On High Definition TV 01/90 82 The Technology Letters 02/90 1O Bose Noise Cancelling Headphones 02/90 78 PC Program for Great Circle Bearings 03/90 96 The Technology Letters 04/90 6 Servicing Your Microwave Oven 04/90 68 Taking The BASF CD Challenge 04/90 83 High Density Data Storage From Philips 05/90 4 Error Correction For Digital Recordings 05/90 16 Fingerscan Personal Identification 06/90 4 Off-Shore Oil Platforms 06/90 76 The Technology Letters 07/90 8 Review: AR950 100-Channel Scanner 08/90 76 Laservision: High Power Communication 08/90 82 The "Tube" vs The Microchip 09/90 6 Voice Mail For Your Computer 09/90 16 How To Make Dynamark Labels 09/90 18 The Fluke 45 Digital Multimeter 09/90 20 The Bose Lifestyle Music System 09/90 60 Kenwood CS-6020 150MHz Oscilloscope · 10/90 4 The Dangers Of Polychlorinated Biphenyls 10/90 38 The Bose Lifestyle Music System 11/90 6 How To Connect Two TVs To One VCR 11 /90 16 Introduction To Digital Electronics 11/90 110 Turn Your CAO Into A Spectrum Analyser 12/90 4 Understanding PC Memory 12/90 14 The Great Green CD Pen Controversy Electric Railways 01/90 86 A Look At Very Fast Trains 02/90 94 The French TGV Fast Trains 03/90 4 The Australian VFT Project Electrical Energy 07/90 52 Pt.1: Coal Burning Power Stations 08/90 32 Pt.2: The Quest For Greater Efficiency 116 SILICON CHIP 09/90 30 Pt.3: How Alternators Are Excited & Cooled 10/90 94 Pt.4: High Voltage Transmission lines 11/90 98 Pt.5: Gas Turbine Power Stations In The NT 12/90 98 Pt.6: Rebuilding Old Alternators Design & Theory 01/90 100 Modifying The Studio 200 Amplifier 03/90 10 The UC3906 SLA Battery Charger IC 06/90 18 Fitting A Fax Card To Your PC Vintage Radio 01 /90 14 Obtaining the Right Spare Parts 02/90 6 Safety With Vintage Radios 03/90 14 Wave Traps -A Useful Vintage Radio Accessory 04/90 16 Finding Receivers From The 1920s 05/90 8 Cleaning up the Chassis 06/90 22 How to Recognise AD/DC Sets 07/90 6 How to Solve Unusual Problems 08/90 6 Tuned Radio Frequency Receivers 09/90 64 The Gentle Art of Scrounging Valves 10/90 16 The Different Types of Radio Valves 11/90 38 Testing Old Radio Valves 12/90 66 Old Radio Books & Magazines TETIA TV Tips 01 /90 62 GEC 2213A 02/90 46 Kriesler 37-104 (Sharp 9C140 chassis) 03/90 38 Pye T30 ChaS$iS 04/90 62 Sony KV-1830AS 05/90 63 Sanyo CTP 7605A 06/90 53 Pye T29 Chassis 07/90 40 Philips 14CT2006 08/90 49 Hitachi CWP139 09/90 74 Philips KT3A-1 Chassis 10/90 53 Philips K9 Chassis 11 /90 48 Kriesler 59-01 12/90 52 Hitachi CTP-229 Serviceman's Log 01 /90 58 Sing It Again Sam(sung) 02/90 44 Another Song About Sam 03/90 34 A Bit of the Snag With The Sausage Machine 04/90 60 It's an Ill Wind, As They Say 05/90 60 Something Old & Something New 06/90 50 You'll Get a Buzz Out Of This One 07/90 40 The Dangers Of A Quick Fix 08/90 46 It Was The Last Thing I Tried 09/90 74 The Risk of Passing The Buck 10/90 52 If Only I'd Known All The Symptoms 11 /90 48 The Customer Takes A Holiday 12/90 48 It $ounds Like Donald Duck Computer Bits 01/90 70 Speeding Up Your PC - The Options 02/90 68 Some Ideas On Computer Interfacing 03/90 80 Digital Waveform Generation Using a PC 04/90 36 Mass Storage Devices 05/90 82 What To Do When Your Computer Goes Bung 06/90 70 What To Do When Your Computer Goes Bung; Pt.2 07/90 72 What To Do When Your Computer Goes Bung; Pt.3 08/90 70 What To Do When Your Computer Goes Bung; Pt.4 09/90 93 What To Do When Your Computer Goes Bung; Pt.5 10/90 87 What's Gone Bung Now? 11 /90 80 Computer Cables & All That Rot 12/90 82 Modem Mysteries Revealed Remote Control 01/90 73 Designing UHF Transmitter Stages 02/90 14 Transmitter Encoders & Black Wire Syndrome 03/90 86 The Controls On A Model Aircraft 04/90 88 Model Aircraft Aerodynamics 05/90 74 Aerodynamics & Stall Conditions 06/90 87 Design Factors For Model Aircraft 08/90 88 Bluff Body Design & Automotive Aerodynamics 09/90 82 The Care & Feeding Of Battery Packs 10/90 110 The Adverse Effects Of Dihedral 11 /90 104 Nicad Cells For High Rate Discharge Projects to Build 01 /90 18 Active Antenna For Shortwave Listening 01/90 26 Phone Patch For Radio Amateurs, Pt.1 01/90 42 A High Quality Audio Oscillator 01/90 63 Speed Controller For Ceiling Fans 02/90 18 16-Channel Mixing Desk, Pt.1 02/90 32 A High Quality Audio Oscillator, Pt.2 02/90 50 The Incredible Hot Canaries 02/90 62 Phone Patch For Radio Amateurs, Pt.2 02/90 74 Random Wire Antenna Tuner For 6 Metres 03/90 20 6/12V Charger For SLA Batteries 03/90 30 Delay Unit For Automatic Antennas 03/90 44 Workout Timer For Aerobics Classes 03/90 60 16-Channel Mixing Desk, Pt.2 04/90 20 Relative Field Strength Meter 04/90 28 Build A VOX With Delayed Audio 04/90 46 Dual Tracking ±50V Power Supply 12/90 11 0 Radio Control Receivers Using Amplitude Modulation Circuit Notebook 01/90 34 Quiz Game With Light Chasers 01 /90 34 High &. Low Boost for PA Loudspeakers 01/90 35 Clipping Indicator for Stereo Amplifiers 02/90 26 Electronic Speedo 02/90 26 Parametric Equaliser 02/90 27 Simple Transistor Beta Tester 02/90 27 30-Second Bilge Pump 03/90 42 100-Sequence LED Chaser 03/90 42 Pulse Width Modulated Signal Compressor 03/90 43 Bilge Pump With 15s Sloshing Delay 04/90 40 Pulse Width Modulated Signal Expander 04/90 40 Low-Cost Alarm Status Indicator 04/90 41 Single Supply Instrumentation Amplifier 05/90 14 Delay Circuit for Intermittent Wipers 05/90 14 24 V Gel-Cell Battery Charger 05/90 15 Adjustable Boxing Timer 05/90 15 2-Phase Oscillator Uses a Flipflop 06/90 56 Antenna Control In Holden Cars 06/90 56 Gutsy 220V Power Supply 06/90 57 40W Bridged Power Amplifier 07/90 60 Driving Stepper Motors from a Parallel Printer Port 07/90 61 Switching Mains With Your Computer 07/90 61 One-Chip DC Volume Control 08/90 42 Electronic Time Delay Switch 04/90 72 16-Channel Mixing Desk, Pt.3 04/90 94 Active CW Filter For Weak Signal Reception 05/90 18 High Energy Ignition For Reluctor Pickups 05/90 30 4-Digit Capacitance Meter 05/90 48 16-Channel Mixing Desk, Pt.4 05/90 66 The Mozzie CW Transceiver 05/90 92 Waveform Generation Using A PC, Pt.3 06/90 30 Multi-Sector Home Burglar Alarm 06/90 40 Universal Stereo Preamplifier 06/90 60 A Speed Alarm For Your Car 06/90 66 Load Protector For Power Supplies 07/90 16 Digital Sine/Square Wave Generator 07/90 28 Alarm Keypad & Combination Lock 07/90 34 Build An Elegant Electronic Die 07/90 64 Waveform Generation Using A PC, Pt.4 07/90 78 Low Cost Dual Power Supply 08/90 16 High-Stability UHF Remote Transmitter 08/90 20 Universal Safety Timer For Appliances 08/90 52 Digital Sine/Square Wave Generator, Pt.2 08/90 66 Horace The Electronic Cricket 09/90 24 Remote Control Extender For VCRs 09/90 40 Music On Hold For Telephones 09/90 48 Alarm Power Supply With Battery Backup 09/90 54 Low Cost 3-Digit Counter Module 10/90 24 Build The Surfsound Simulator 10/90 48 Low Cost Siren For Burglar Alarms 10/90 66 DC Offset For Digital Multi meters 10/90 72 Dimming Controls For The Discolight 11/90 24 Battery Powered Laser Pointer 11/90 42 Low-Cost Model Train Controller 11/90 56 A Really Snazzy Egg Timer 11 /90 72 Build A 1.5V To 9V DC Converter 11/90 75 Modifications To The 16-Channel Mixer 12/90 24 DC-DC Converter For Car Amplifiers 12/90 38 The Big Escape 12/90 54 Wiper Pulser For Rear Windows 12/90 70 Versatile 4-Digit Combination Lock 08/90 42 Effective In-Circuit Battery Tester 08/90 43 Remote Control For Early Rank Arena TVs 08/90 43 Overvoltage Protection For Power Supplies 09/90 90 2.4GHz Prescaler For 1GHz Frequency Meter 09/90 90 Low Cost Battery Minder 09/90 91 Traffic Lights For Model Railways 09/90 92 Electronic Control For Radiator Fan 09/90 92 1 Hz Timebase With Variable Pulse Width 10/90 62 Expanded Scale 11.6-12.6V Voltmeter 10/90 62 Low-Cost Mains Frequency Indicator 10/90 63 Obtaining -5V From A +5V Supply 10/90 63 Digital Staircase Waveform Generator 11/90 32 Low Frequency Sample & Hold Circuit 11 /90 32 Single Chip Low Battery Alarm 11/90 33 FM Stereo Test Tone Transmitter 12/90 80 Current Limiter For 240VAC Lamps 12/90 80 Climate Controller For A Greenhouse 05/90 42 Electronic Load For Checking Power Supplies 06/90 84 Understanding Frequency Modulation 07/90 88 Weather Fax Frequencies 08/90 82 The Old vs The New 09/90 98 Shortwave Converter For 2-M 10/90 82 Using The NE602 In Home-Brew Converter Circuits 11/90 66 The 6-Metre Summertime Special . 12/90 104 A 5W Power Amplifier For The 6-Metre Transmitter Amateur Radio 01/90 66 Yaesu's New FRG-8800 Shortwave Receiver 02/90 74 Random Wire Antenna Tuner For 6-Metres · 03/90 72 Understanding Single Sideband Transmission 04/90 94 Active CW Filter Notes & Errata 03/90 102 Alarm-Triggered Telephone Dialler, September 1989 03/90 102 Simple 40-Metre Receiver, December 1989 04/90 101 Ask Silicon Chip - How Do You Wind Inductors? March 1990 05/90 101 2-Chip AM Stereo Radio, October 1989 05/90 101 Digital Waveform Generation, Computer Bits, March 1990 05/90 101 Active Antenna, January 1990 06/90 102 Radfax Decoder, November 1989 06/90 101 VOX With Delay, April 1990 08/90 108 Phone Patch, January 1990 10/90 118 3-Digit Counter, September 1990 10/90 118 Radfax Decoder, November 1989 10/90 118 VOX With Delay, April 1990 10/90 118 0-1 00V 1.5A Dual Tracking Power Supply, April 1990 10/90 118 16-Channel Mixing Desk, February, March & April 1990 DECEMBER1990 117