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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



Power Supply Menu

Power Supplies (HV)

Cleaning Old Components




Power Supplies (LV)

Control Circuits





Crystals and Filters Menu

Crystal Filters





Crystals for IF Filters





Crystal Measurements


Progressive Rec’r Design

AF Amplifier


Crystals Photo



AF Filter

Design Menu

Design Process



AM/AGC Detector


Historic Designs



Crystal Set


Kit Design



DC Rec’r/Product Det’r


Progressive Receiver Design



Power Supply





RF/IF Amplifier

Electromechanical Circuits




Tuned Circuit Data

Fault Finding



Re-engineered Units


Heathkit Projects/Information

Re-engineered Units





Aerial Matching Unit





FM Module


Reforming Electrolytics



IF Filters 1


Simple RF Detectors



IF Filters 2


Software



New Control Knob





New Inductors





PS-1V4 Power Supply


Solid State Circuits Menu

1  RF/IF Amplifiers (U)


PS-23 Power Supply



2  RF Oscillators


PSU-25 Power Supply



3  Linear LF Detectors


PS-2000



4  Active Filters


RF Switchbox





SB-101 Modifications



5  LF Amplifiers & Buffers


SB-101 Rebuild



6  LF Oscillators


SB-101 Refurbishment



7  RF Mixers


SB-104 Modificationas



8  AM Detectors & AGC


SB301 Rebuild



9  H-Mode Mixers


SB-401 Changes



10 Relay Switching


SB-Line Inductors



11 High Dynamic Range Amplifiers


Spares and Repairs



12 Electronic Switches


Station Console



13 Speech Processor


SWR Bridges



14 VOGAD


Valve PSU



15 FM Module


Valve Transverter



16 Broad Band Transformer


WARC and Other Bands



17 Mixer Terminations




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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