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Linked Page(s)


Parent Page

Linked Page(s)

Aerials and ATU Menu

Aerials and Feeders


Permeability Tuned Osc’r



Aerial Matching Unit





Aerials - VHF


PIC Applications Menu

Push Button Processor

Amplitude Modulators





Cleaning Old Components



Power Supply Menu

Power Supplies (HV)

Control Circuits




Power Supplies (LV)

Crystals and Filters Menu

Crystal Filters



PS-12M Re-engineered PSU


Crystals for IF Filters





Crystal Measurements


Progressive Rec’r Design

AF Amplifier


Crystals Photo



AF Filter


Crystal Pulling Range




Design Menu

Design Process



AM / AGC Detector


Historic Designs



Crystal Set


Kit Design (see * below)



Direct Conversion Rec’r


Progressive Receiver Design



Power Supply





Product Detector

Electromechanical Circuits




RF/IF Amplifier

Fault Finding Menu

Basic Fault Finding



Tuned Circuit Data


Commercial Equipment Repairs





Re-engineered Power Supply


Re-engineered Heathkit Units







Heathkit Projects/Information

Re-engineered Units





Aerial Matching Unit


Reforming Electrolytics



FM Module





IF Filters 1


Software



IF Filters 2





New Control Knob





New Inductors


Solid State Circuits Menu

1  RF/IF Amplifiers


PS-1V4 Power Supply



2  RF Oscillators


PS-23 Power Supply



3  Linear LF Detectors


PSU-25 Power Supply



4  Active Filters


PS-2000



5  LF Amplifiers & Buffers


RF Switchbox



6  LF Oscillators


SB-101 Modifications





SB-101 Rebuild



7  RF Mixers


SB-101 Refurbishment



8  AM Detectors & AGC


SB-104 Modifications



9  H-Mode Mixers


SB301 Rebuild



10 Relay Switching


SB-401 Changes



11 High Dynamic Range Amplifiers


SB-Line Inductors



12 Electronic Switches


Spares and Repairs



13 Speech Processor


Station Console



14 VOGAD


SWR Bridges



15 FM Module


Valve PSU



16 Broad Band Transformer


Valve Transverter



17 Mixer Terminations





18 PIN Diode AGC System





19 Digital VFO


WARC and Other Bands


Sources of Information/Parts





Surge Limiter





Switch Wafer Repairs





Temperature Controller


Inductors and Tuned Circuits



Test Equipment Menu

Absorption Wavemeter

Keyer




AF Distortion Meter





AF Oscillator

* Kit Designs

Active Mixers



Crystal Activity Meter


AF Amplifier



Crystal Calibrator


AF Filter



Digital LC Meter


AM Detector



Dummy Load


Basic Multimode Transceiver



Gate Dip Oscillator


Bidirectional Mixer



LC Bridge


Crystal Set



Logarithmic Detector


Digital Receiver



Modulation Meter


Direct Conversion Receiver



Noise Generator


Product Detectors



Off Air Frequency Standard


RF/IF Amplifier



Return Loss Bridge


Simple Transmitter



Scope Probe Information


Transverter



Simple RF Detectors





Spectrum Analyser





Temperature Test Box





Valve Tester


Transverter


Typical Receiver Block Designs


LC Filter Menu

Bandstop Filters


Useful Formulae



HF Bandpass Filters


Useful Tools



Quadrature Hybrid BPF


Vackar VFO

Download Calculator


Transmitter Filters


Valve Circuits Menu

Valve Circuits 1

Logarithmic Detector




Valve Circuits 2

Low Cost Design





Measurements Menu

FM Deviation Measurements



Valve Circuits 3


Rec’r Sensitivity Tests



Valve Circuits 4





Valve Circuits 5

Mechanics Menu

Control Knob



Valve Circuits 6


Indicator Dials


(B = Battery Valve Circuits)

Valve Circuits B1


Metalwork



Valve Circuits B2





Valve Circuits B3

Music Electronics




Valve Circuits B4

Painting and Lettering




Valve Circuits B5

PC Board Menu

PC Board Construction 1





PC Board Construction 2





PC Board Layout 1





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