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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)

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



Crystal Set


Historic Designs



DC Rec’r/Product Det’r


Kit Design



Power Supply


Progressive Receiver Design



Tuned Circuit Data

Heathkit Projects/Information

Aerial Matching Unit


Re-engineered Units



FM Module





IF Filters 1


Reforming Electrolytics



IF Filters 2


Simple RF Detectors



PS-1V4 Power Supply


Software



PS-23 Power Supply


Solid State Circuits Menu

1  RF/IF Amplifiers (U)


PSU-25 Power Supply



2  RF Oscillators


RF Switchbox



3  Linear LF Detectors


SB-101 Modifications



4  Active Filters


SB-101 Rebuild



5  LF Amplifiers & Buffers


SB-101 Refurbishment



6  LF Oscillators


SB-104 Modificationas



7  RF Mixers


SB301 Rebuild



8  AM Detectors & AGC


SB-401 Changes



9  H-Mode Mixers


SB-Line Inductors



10 Relay Switching


Spares and Repairs



11 High Dynamic Range Amplifiers


Station Console



12 Electronic Switches


SWR Bridges



13 Speech Processor


Valve PSU



14 VOGAD


Valve Transverter



15 FM Module


WARC and Other Bands


Sources of Information/Parts





Surge Limiter


Historic Designs



Switch Wafer Repairs


Inductors and Tuned Circuits



Test Equipment Menu

Absorption Wavemeter

Keyer




AF Distortion Meter

Kit Design - One Approach

Active Mixers



AF Oscillator


AF Amplifier



Crystal Activity Meter


AM Detector



Crystal Calibrator


AF Filter



Dummy Load


Basic Multimode Transmitter



Gate Dip Oscillator


Bidirectional Mixer



LC Bridge


Crystal Set



Modulation Meter


Digital Receiver



Noise Generator


Direct Conversion Receiver



Return Loss Bridge


Product Detectors



Scope Probe Information


RF/IF Amplifier



Spectrum Analyser


Simple Transmitter



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

Measurements Menu

FM Deviation Measurements



Valve Circuits 3


Rec’r Sensitivity Tests



Valve Circuits 4


Indicator Dials



Valve Circuits 5

Mechanics Menu

Control Knob



Valve Circuits 6


Indicator Dials


(B = Battery Valve Circuits)

Valve Circuits B1


Metalwork



Valve Circuits B2

Mixer Terminations




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





Symbol Explanation




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