Name: | Eddystone (Brand), Stratton and Co., Ltd., Eddystone Radio Ltd.; Birmingham (GB) |
Abbreviation: | eddystone |
Products: | Model types |
Summary: |
Stratton and Co., Ltd. Eddystone Radio Ltd. Brand: Eddystone From hairpins to radio waves, Birmingham's Eddystone (1923) rose from fashion's shift. Pioneering shortwave & VHF tech, they even supplied vital radio equipment for Allied aircraft in WWII, rebuilding twice from bombings. Partnering with the BBC, they continued to innovate in digital broadcasting (DAB) throughout the 20th century. |
Founded: | 1923 |
Production: | 1923 - |
History: |
Eddystone Radio: A Pioneering Journey From Hairpins to Radio Waves: An Unexpected Birth (1923) Early Days: Catering to Hobbyists and Experimenters Pioneering Shortwave Technology (1926): Expanding the Market and Embracing Innovation (1930-1939): Venturing into VHF and Supporting National Defence (1930s): By 1939, Eddystone Radio had firmly established itself as a pioneer in radio technology. Their commitment to innovation, adaptation, and national service laid the groundwork for their continued success in the years to come. World War II: Rising to the Challenge (1939-1945) Post-War Challenges and Adaptation (1945-1965) Changes in Ownership and Technological Shifts (1965-1990s) Navigating a Changing Landscape (1990s-Present) Eddystone's Legacy Endures
[1] Practical Wireless Feb 1994 pages 34 – 37 by Chris Pettit, Managing Director. |
This manufacturer was suggested by J. H..
Country | Year | Name | 1st Tube | Notes |
---|---|---|---|---|
GB | 61–68 | 840C (S840C) (840-C) (S840-C) | UAF42 | Coverage 0.48 - 30 MHz in five ranges, AM/CW/SSB (BFO), AGC/MGC, standby-control/muting-li... |
GB | 27 | Scientific Four | Scientific Four. It employed a neutralised triode RF stage.Microtune dials.Plug-in coil... | |
GB | 33 | Eddystone Short-Wave Converter | ||
GB | 25 | Plug-in Coil | 250 turns for LW. | |
GB | 64–70 | EC-10 | OC171 | coverage 550 kHz - 30 MHz, AM, CW (BFO); optional 924 mains power supply, optional 945 12/... |
GB | 69–75 | EC-10 [Mark II (2)] | coverage 550 kHz - 30 MHz, AM, CW (BFO); adds S-Meter.Also sold as MIMCO 6689; later varia... | |
GB | 68 | Yachtsman EY-11 [prototype] | Maritime receiver covering 150-400 / 480-1250 kHz, 1,1-2,5 / 2,5-6,2 MHz. Set features DF... | |
GB | 65 | Panoramic Display Unit EP14 | Eddystone EP14 is a general purpose panoramic display unit for use with Eddystone Model 77... | |
GB | 46 | 504 (S.504) (S504) | EF39 | Communications receiver covering 580 kHz - 30,5 MHz in five bands (580-1340 kHz, 1,34-2,9 ... |
GB | 40 | 358 | EF39 | Coverage 40 kHz - 31MHz in 10 bands. Wave band is changed by plugging in different coil un... |
GB | 63–69 | 830/2 (S830/2) | 6ES8 | General Coverage Communications Receiver;Range: 300 kHz to 30 MHz;Modes: AM/SSB. Covers 30... |
GB | 56–61 | 730/4 (S730/4) | 6BA6 | General Coverage Communications Receiver;Range: 480 kHz to 30 MHz;Modes: AM/CW. |
Further details for this manufacturer by the members (rmfiorg):
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WWW tip: Eddystone User Group Website
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Martin Bösch
10.Jun.07 |
1
Anybody looking for in depth informations about the British manufacturer Eddystone might visit the Website of the Eddystone User Group. The QRG - The Ultimate Quick Reference Guide: in a sixty page booklet You find informations on Eddystone company history and a comprehensive model list with many illustrations. A printed version of the QRG is also available. You also find the EUG Newsletter that was appearing quarterly from 1990 to 2006 for download, here You find receiver reviews, personal stories and repair hints. The Super Index of Newsletters 1 - 96 tells You, in which newsletter You find informations about Your set. It's worth reading the background stories even if You don't own the radios. In the Handbooks and Servicing Manuals Section You find many Eddystone technical manuals. There is much more to discover, it's worth a try if You are interested in British commercial and maritime receivers! Martin Bösch |
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Eddystone: RF gain potentiometers logarithmic
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Martin Bösch
28.Apr.07 |
1
In Eddystone User Group Newsletter 50 I found the following useful information an replacing RF gain pots in Eddystone receivers: Usually AF gain pots are logarithmic carbon types, RF gain pots usually used linear wire-wound types. After replacement of RF gain potentiometers with common linear ones, many listeners found that the whole RF gain control range was passed through in the last eigth of a turn. A careful inside inspection of a Eddystone RF gain pot revealed, that in that wire wound potentiometer three different thicknesses of resistance wire had been used. The first third in 10 kOhm pot is linear 0 - 500 Ohms, the second third 0 - 2000 Ohms, the third bit 0 - 7500 Ohms, so the whole makes 10000 Ohms. So consider trying to clean out Your Eddystone RF - gain pot instead of simply replacing it with a 10 kOhm linear one, otherwise Your RF-gain control might suffer from the "Switch Syndrome"... Hope that helps, kind regards Martin |
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