Alan Cordwell Web Portal

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The Alan Cordwell web portal replaces and brings together a number of previous sites that were hosted on free servers. It is still being built, but please feel free to look around.

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Welcome! Croeso! Failte! Dynnargh! Willkommen! Bienvenue! Benvenuto! Bienvenidos!

Thanks for stopping by the Alan Cordwell web portal. You've been here before- nice to see you again. In the topic browser below, you can mouseover a button for more information, or click to go to the home page for that topic.

Personal Homepage			Radio positioning
Radio			Natural radio
Povray			Software
Electronics			Music

Image: Thomason's Foss, near Beck Hole, North Yorkshire. AC May 2002

Featured articles

How I built a simple lute

This article, with 15 photos to date, describes how I built a simple but very playable lute in a few weeks. Follow the 'music' links to get there...

Sheffield's sewer gas lamps

This article is about the surviving examples of 84 Webb Patent Sewer Gas Destructor lamps that were installed in Sheffield between 1915 and 1935; and are now classed as 'listed buildings'. Thanks to the efforts of local residents, three of them still work. Click here to go straight to this article.

Radio navigation pages

The ever popular feature on the Decca HiFix and Racal HyperFix positioning systems are here. The current Fugro DeltaFix system is also covered. There are 35 pages with a wealth of illustrated technical detail, and lots of photographs taken by engineers from the 1960's through to the 90's. Also, there is a list of all known positioning systems, and pages about Argo and the Russian Bras, RS10, Chayka and Mars-75 systems.

About this web site, legal notices and disclaimers

Thank you for visiting, and I hope you enjoy browsing around my web portal. If you have any comments about this web site, or would like to contribute material to any of the topics, I would love to hear from you. Please contact me at the email address below. Best wishes; Alan Cordwell

Photographs, program code and other third party material are used on this web site with the express permission of their respective owners. I have not knowingly used any copyright third party material without consent but if you consider that I have, please email me and I will either remove it or credit you as you prefer.

By entering, you agree that you use any advice, technical instruction, software, or any other material from this web site entirely at your own risk. Every effort has been made to ensure the accuracy and appropriateness of information presented in this web site; however I am absolutely not liable for any damage, loss, injury or death howsoever caused through the direct or indirect use of information.

Last updated 14/7/08