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. As well as regularly adding new items I have restructured the site to simplify this opening page and move items into subject related groups using the highlighted fields below to provide for 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 1999-2016.

These web pages were last updated on 02 May 2016.

This web site was built with Serif Web Plus X8 and does not use any cookies.

Note: Some minor errors have been corrected and some page layouts and URLs have been changed so please enter the site via this home page 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

Power Supply Menu

Test Equipment Menu

Heathkit Projects / Information

Permeability Tuned Oscillator

Typical Receiver Block Designs

Inductors & Tuned Circuits

Progressive Receiver Design

Useful Formulae


Re-engineered Heathkit Units

Useful Tools (U)

LC Filters Menu

Reforming Electrolytic Capacitors

Vackar VFO

Measurements Menu

Simple RF Detectors

Valve Circuits Menu

Mechanics Menu

Solid State Circuits Menu


R F Burns  


Amateur Radio Callsign G3OOU

G-QRP Club Member 6907

Registered RSGB Instructor

Newsletter Editor - Crystal Palace Radio & Electronics Club

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

Best wishes