Welcome to my technical web site which is dedicated to RF Communications, Test Equipment and related topics in both old and new technologies plus a few non-electronic ideas. New items are regularly added and subject related items are grouped within the highlighted fields for ease of access and future expansion. A number of example PCB layouts have been added to their respective circuit pages.

The site map shows the relative positioning of all pages on this site.

If you have any questions or comments on the contents of this site please email me at G3OOU(at)AOL.COM - replace (at) with @ when emailing.

Bob F Burns G3OOU - Electronic Design Centre

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Home site including Crystal Palace Radio & Electronics Club

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Unless otherwise stated, all items on these pages are copyright R F Burns 1999-2017.

These web pages were last updated on 17 February 2017.

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Note: This and the club site undergo continuous development so please enter each site via their respective home pages and check and update your bookmarks - page refreshes (F5) may be required.

Aerials & ATU Menu

Mixer Terminations

Sources of Information and Parts

Amplitude Modulators

Music Electronics

Surge Limiter

Cleaning Old Components

Painting and Lettering Panels

Switch Wafer Repair/Rebuild

Crystals and Filters Menu

PC Board Menu

Temperature Controller

Design Menu (U)

Permeability Tuned Oscillator (U)

Test Equipment Menu (U)

Heathkit Projects / Information

PIC Applications Menu

Typical Receiver Block Designs

Power Supply Menu

Useful Formulae

Inductors & Tuned Circuits

Progressive Receiver Design

Useful Tools


Re-engineered Heathkit Units

Vackar VFO

LC Filters Menu

Reforming Electrolytic Capacitors

Valve Circuits Menu (U)

Measurements Menu (U)

Simple RF Detectors


Mechanics Menu

Solid State Circuits Menu (U)

Bob F Burns  


Amateur Radio Callsign G3OOU

G-QRP Club Member 6907

Instructor and registered RSGB Assessor

Newsletter Editor - Crystal Palace Radio & Electronics Club

N) = New, (U) = Updated, blank = no recent change

Best wishes