Restoration Projects
We have a wide and ever increasing selection of articles and papers on restoring Eddystone Radio’s. Most have been written by Gerry O’Hara who is also the author of the series of Eddystone Technical Shorts. If you have restored an Eddystone set and would like to share your experiences with others then send your article to the EUG Webmaster at g0eyo@blueyonder.co.uk. Please note that Gerry’s e mail address is no longer as shown on many of these articles but he can be contacted on gerrycohara@gmail.com.
Gerry O’Hara’s (VE7GUH) Technical Shorts
‘Technical Shorts’ is a series of (fairly) short articles prepared for the Eddystone User Group (EUG) website, each focussing on a technical issue of relevance in repairing, restoring or using Eddystone valve radios. However, much of the content is also applicable to non-Eddystone valve receivers. The articles are the author’s personal opinion, based on his experience and are meant to be of interest or help to the novice or hobbyist. They are not meant to be a definitive or exhaustive treatise on the topic under discussion. References are provided for those wishing to explore the subjects discussed in more depth. The author encourages feedback and discussion on any topic covered through the EUG forum. To download the articles click on the titles below
| No1:Eddystone Cap Lore; Failure, Testing, Replacing and Fixing | download |
| No2: Resistor Lore for Eddystones | download |
| No3: Fuse Lore for Eddystones | download |
| No4: Making a case for an S750 | download |
| No5: Crystal Filters and Receiver Selectivity | download |
| No 6: Eddystone Receiver Alignment | download |
| No 7: Eddystone Circuits | download |
| No 8: Eddystone AC/DC Lore | download |
| No 9: Eddystone Christmas Tale | download |
| No 10: Eddystone Receiver Test Equipment | download |
| No 11: Eddystone Valve Lore | download |
| No 12: Radio Receiver Fault Finding | download |
| No 13: Aerial Matching | download |
| No 14: AGC | download |
| No 15: Inductor Lore | download |
| No 16: Detectors and Discriminators | download |
| No 17: Restoring Eddystone Receivers | download |
| No 18: Operating Your Eddystone | download |
| No 19: Making a Type “E” style Case | download |
| No 20: Eddystone Dial Drive Mechanism and Gearbox | download |
| No 21: Eddystone Plinth Speaker | download |
| No 22: Switches | download |
| No 23: Alignment using a Wobbulator | download |
| No 24: Oscilloscope in Radio Servicing | download |
| No 25: Receiver Front Ends | download |
| No 26: Valve Types and Characteristics | download |
| No 27: Early Semiconductor Lore | download |
| No 28 Radio Dentistry(working in tight spaces) NEW | download |
ARTICLES SET SPECIFIC
| SET | TITLE | AUTHOR | download |
| Various | NEW Refurbishment of an Eddystone EA12 NEW | Victor Jenkins | download |
| Various | A Story about an Eddystone 888A | Victor Jenkins | download |
| Various | RF Earthing Problem with Eddystone Receivers | Victor Jenkins | download |
| S940 | S940 Tuning an AGC system | Victor Jenkins | download |
| S730 | Cord Replacement Instructions | Eddystone | download |
| S730 | Cord Replacement Instructions | Eddystone | download |
| S680X | S680X Product Detector Installation | Roy Kavanagh | download |
| S820 | S820 Re-re- revisited | Gerry O’Hara | download |
| S830/4 | S830/4 Re-re- revisited | Gerry O’Hara | download |
| S680/2 | S680/2 revisited in 2020 | Gerry O’Hara | download |
| S940 | Postscript to ‘Installing a 500KHz Crystal Calibrator Unit in an Eddystone S.940’ | Gerry O’Hara | download |
| S888A | Eddystone S888A Revisited | Gerry O’Hara | download |
| S940 | Installing a 500kHz crystal calibrator in an S940 | Gerry O’Hara | download |
| S940 | Eddystone S940 Revisited | Gerry O’Hara | download |
| S640 | Eddystone S640 Revisited | Gerry O’Hara | download |
| S750 | Eddystone S750 Revisited | Gerry O’Hara | download |
| S750 | Restoring an Eddystone S750 | Gary Albach | download |
| S840 | Restoration of an Eddystone S840 | Gerry O’Hara | download |
| S840 | Postscript to article below on Restoration of S840 concerning a BFO fault | Gerry O’Hara | download |
| S840A | Restoration of an Eddystone S840A NEW | Deltro D’Arisbo | download |
| S820 | Restoration of an Eddystone S820 FM Tuner | Gerry O’Hara | download |
| S820 | Postscript to his restoration of an S820 FM Tuner | Gerry O’Hara | download |
| S640 | Restoration of an Eddystone S640 | Gerry O’Hara | download |
| S680/2 | Restoration of an Eddystone S680/2 Part 1 | Gerry O’Hara | download |
| S680/2 | Restoration of an Eddystone S680/2 Part 2 | Gerry O’Hara | download |
| S680X | An overview of the S680X Bandswitch NEW | Andy GW0JXM | download |
| S680X | S680X Circuit redrawn, parts list, bandswitch info and table of voltages | Andy GW0JXM | download |
| S750 | Restoration of an Eddystone S750 for SPARC | Gerry O’Hara | download |
| S750 | Restoration of anEddystone S750 with reviews and supporting data | Gerry O’Hara | download |
| S750 | Restoration of an Eddystone S750 without reviews and supporting data | Gerry O’Hara | download |
| S740 | Restoration of an Eddystone S740 | Gerry O’Hara | download |
| S740 | Article on an Eddystone inspired S meter and Speaker | Gerry O’Hara | download |
| 830/4 | Restoration of an Eddystone 830/4 | Gerry O’Hara | download |
| 830/4 | Revisit to the Eddystone 830/4 to repair and re-align the set | Gerry O’Hara | download |
| 830/4 | Using a Wobbulator to re-align the Eddystone 830/4 | Gerry O’Hara | download |
| S940 | Restoration of Eddystone S940 part 1 | Gerry O’Hara | download |
| S940 | Restoration of an Eddystone S940 part 2 | Gerry O’Hara | download |
| S680X | Restoration of an Eddystone 680X | Gerry O’Hara | download |
| S770R | Restoration of an Eddystone S770R | Gerry O’Hara | download |
| S770U | Restoration of an Eddystone S770U Mk1 | Gerry O’Hara | download |
| S358X | Restoration of an Eddystone 358X | Gerry O’Hara | download |
| S358X | Restoration of an Eddystone 358X with annex containing adverts from Wireless World | Gerry O’Hara | download |
| 902 | Restoration of an Eddystone Edometer | Gerry O’Hara | download |
| EC10 | Article on Much Modified EC10 Mk1 | Gerry O’Hara | download |
| EC10 | Restoring an EC10 when the glass scale is un-useable | Stuart Gillies | download |
| EC10 | Restoration of an Eddystone EC10 Mk 1 Part 1 | Gerry O’Hara | download |
| EC10 | Restoration of an Eddystone EC10 Mk 1 Part 1 with attachments | Gerry O’Hara | download |
| EC10 | Restoration of Eddystone EC10 Mk1 Part 2 with postscript on EC10A and EC10/2 | Gerry O’Hara | download |
| EC10 | Restoration of the IF section of an Eddystone EC10 | Paul Gilpin ZS2PG | download |
| EC10 | Article from Radio Scan July 2007 on making a PSU for the EC10 | Stef Niewiadomski | download |
| EC10 | Short article describing how to build a stabilized psu into an EC10 without any metalwork or modifications to the set or battery holder | Gerry O’Hara | download |
| EB35 Mk1 | Restoration of an Eddystone EB35 Mk1 | Gerry O’Hara | download |
| 1830/1 | Portrait of an Eddystone Model 1830/1 | Gerry O’Hara | download |
| 1830/1 | NEW 1830 100kHz IF Filter Alignment NEW | Mike VK4GV | download |
| 1830/1 | NEW Renovation, Full Alignment, Test & Review NEW | Mike VK4GV | download |
| 1004 | Photos of 1004A Marconi Marine Sentinel by pre-restoration | Glenn Little WB4UIV | download |
| general | Step by Step Inductance Charts and Tables | Gerry O’Hara | download |
| S730/4 | From Rubbish Skip to Beauty Queen- Restoration of an S730/4 | Alan Crooks _(ed Gerry O’Hara) | download |
| 898 | Eddystone 898 Drive Unit in an HBR13C Receiver | Gerry O’Hara | download |
| 1570/1 | Portrait of an Eddystone 1570/1 Receiver | Gerry O’Hara | download |
| S504 | Dial Drive Cleaning and Servicing | Roy Kavanagh GM4VKI (edited by Gerry O’Hara) | download |
| 840A | Using a Marquis 2 pin plug for a mains connector | Philip Leahy (edited by Gerry O’Hara) | download |
| 870 | Article on the restoration of an S870 NEW | Gerry O’Hara | download |
| EC958/5 | Article on Repair of EC958/5 NEW | RoyKavanagh GM4VKI |
download |
| 888 | Article on Restoration of Eddystone 888 Receiver | Wendy Mott G8BZY |
download |
VIDEO’s on REPAIRING AN S680X by Andy GW0JXM
I made this little series of videos about my work on the S680X simply to share with others with a similar interest. They are not structured and it’s by no means a complete story and I’m sure members will see all sorts of errors and bad practice for which I apologise in advance. I will be making other videos that will no doubt feature the S680X.
I hope the user group members can get some pleasure out of my videos and forgive my errors but it does mean that from now on I’ll have to pay extra attention to my videos if they are to be scrutinised by the experts.
For each of the following videos I’ve included the standard ‘Long link’ and that’s followed by the High Definition link.
Please note that when you click on the URL you will get a message saying that the video cannot be opened within a frame. Just follow the instructions to open the video up on a new page.
About Radio … Part 20 Introduction
http://youtu.be/sRW3sieJTpI?hd=1
About Radio … Part 21 second part of introduction.
http://www.youtube.com/watch?v=Cjfo8gz9KvQ
http://www.youtube.com/watch?v=Cjfo8gz9KvQ&hd=1
About Radio … Part 22
http://www.youtube.com/watch?v=IAQc8l_CUUM
http://www.youtube.com/watch?v=IAQc8l_CUUM&hd=1
About Radio … Part 23 tunings section
http://www.youtube.com/watch?v=-Jx7tfnxLy4
http://www.youtube.com/watch?v=-Jx7tfnxLy4&hd=1
About Radio … Part 24 power supply
http://www.youtube.com/watch?v=ofbOlUi2ap0
http://www.youtube.com/watch?v=ofbOlUi2ap0&hd=1
About Radio … Part 25 mains transformer
http://www.youtube.com/watch?v=TxSoG6ije2I
http://www.youtube.com/watch?v=TxSoG6ije2I&hd=1
About Radio … Part 26 working towards mains test
http://www.youtube.com/watch?v=Th_bR2dELlU
http://www.youtube.com/watch?v=Th_bR2dELlU&hd=1
About Radio … Part 27 It’s working!
http://www.youtube.com/watch?v=iWJ40DFqq88
http://www.youtube.com/watch?v=iWJ40DFqq88&hd=1
About Radio … Part 28 Listening to some stations
http://www.youtube.com/watch?v=VmkWam-2VmQ
http://www.youtube.com/watch?v=VmkWam-2VmQ&hd=1
About Radio … Part 29 Inrush current
http://www.youtube.com/watch?v=UNQDexsEwTM
http://www.youtube.com/watch?v=UNQDexsEwTM&hd=1
So to anyone who may be interested please leave a comment on the video as it may guide me into a direction that has wider appeal.
Kind Regards … Andy Davies.
ARTICLES ON THE ALL WORLD TWO
An Eddystone All World Two came up for sale on Australian E-bay recently with a very interesting history. It was purchased by Louis Vermond VE3AWA an EUG member in Canada and restored by Gerry O’Hara VE7GUH another Canadian member. This series of articles, information and video files is a classic bit of work and research into one of the most famous but rare early Eddystone sets.
All World Two Restoration Article with Appendices (Download 17Mb)
All World Two Restoration Article without Appendices ( Download 4Mb)
All World Two Restoration Article Appendices and Flyers ( Download 14Mb)
All World Two Coil Calibration Curves ( Download 2Mb)
AW2 Coil Charts with bands spreadsheet (Download200kb)
Reception of WWV on 10MHz on AW2 (Download 5Mb)
AM Reception on AW2 file 2 (Download 12Mb)
SSB Reception on AW2 on 20m (Download 7Mb)
Replica of All World Two supplied by Jim Mc Gowan M0MAC (download)
ARTWORK FOR DIALS AND FINGERPLATES (note. Ian Nutt can supply fingerplates for a number of sets – see the Spares section of the Website)
NEW Andrew Van Tilburg in Melbourne Australia has created dial artwork for the Eddystone 730/4. There are two files:
- A Visio file which will need to be unzipped. Download and
- A pdf file for those who don’t have Visio. Download
Dial Scan of S504 dial courtesy of Mike Gaydon (download)
Artwork for Reproduction Fingerplate for S504 courtesy of Gerry O’Hara, George Gorczynski and Roy Kavanagh (download jpg file) or (download pdf file) or (download .wmf file)
Artwork for Reproduction Fingerplate for S680 courtesy of Gerry O’Hara
Artwork for Reproduction Fingerplate for S750 courtesy of Gerry O’Hara
Artwork for Reproduction Fingerplate for S640 courtesy of Gerry O’Hara
Artwork for Reproduction Fingerplate for S870 courtesy of Gerry O’Hara NEW
Artwork for Reproduction Fingerplate for S870A courtesy of Gerry O’Hara NEW
EC10 dial scale artwork (download)
NEW EC10 Mk1 dial scale artwork from Richard G8MWQ ( EC10 Scale EC10 Scale_Mirror )
S870A Dial Scan artwork (may need to adjust for final size) (download) from Stef Niewiadomski
S870A Dial Scan artwork (may need to adjust for final size from Nico PA0NVD 
S870A Dial artwork from John G8GMB
Joe K9LY from Chicago needed a new 888A dial plate for a restoration project. A friend of his, Mike – KA9CLP, was kind enough to lay out the dial scale on his computer for him. The original scale was in truly terrible shape. Nearly half the original scale (including the base paint) had been rubbed off by some overzealous cleaner. Then a very non-original looking paper scale had been stuck over it! A local sign-making shop had a large-format printer that printed the new scale onto a sheet of thin, gray, self-adhesive plastic. Then Joe applied it to the metal plate and carefully cut out the opening for the fine-tuning scale window. Joe thinks this layout could be of use to other 888A owners if they have a seriously bad-looking dial plate.
Click on the following to see the finished results.
Model 888A FACEPLATE ARTWORK (EPSF file)
Model 888A FACEPLATE ARTWORK (PDF file)
Picture of Overlay attached to back plate
Picture of assembled 888A with new dial
S830/7 coil box
1:1 scan of an S830/7 coilbox cover, courtesy of Graeme Wright (download)
(NEW) Repair of Eddystone 1002/2
Lou Blasco VK3ALB thought the members might be interested in his repair of an Eddystone 1002/2.
https://www.dropbox.com/s/ud800yte6ukd0ld/Eddystone%201002%20repair.pdf?dl=0