Mullard MAGIC

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HOW IS RADIOLYMPIA 1936 AND THE TARDIS RELATED? I did smile when I saw this advertisement from 1936 when a Police Public Call Box was seen as something other than a Time Lord's mode of transport. The Police Box is a public telephone kiosk or the use of members of the police or for members of the public to contact the police. It was used in the Un...

Another great blog entry

THE TALE OF TINY FOR RADIO AND THE MULLARD HIGH SPEED VALVE TESTER I was thrilled today to be contacted by Arthur, all the way from Australia who shared his memories from 67 years ago about his dad's Dalston radio shop, Tiny for Radio and the tribulations of the shop Mullard High Speed Valve Tester (MHSVT) which I can now share with you: - We used Mullard valve tes...

Transistors in space!

64 YEARS AGO, THE FIRST TRANSISTORS IN SPACE I just love this RCA advertisement, dating from 1965 proclaiming that a new kind of transistor will help man land on the moon. Did transistors play a part in the space race and when did the first transistor go into space I hear you muse, well, I think I can tell you a little bit about this. As a con...

Another interesting blog entry

THE TALE OF TINY FOR RADIO AND THE MULLARD HIGH SPEED VALVE TESTER I was thrilled today to be contacted by Arthur, all the way from Australia who shared his memories from 67 years ago about his dad's Dalston radio shop, Tiny for Radio and the tribulations of the shop Mullard High Speed Valve Tester (MHSVT) which I can now share with you: - We used Mullard valve tes...

Another great blog entry

THE ALCHEMIST HAROLD LEAK TURNED ALUMINIUM INTO GOLD Harold Leak (HJL) had a thing about aluminium and why not indeed as he was a true alchemist in his ability to turn aluminium into gold. Harold's genius led us to the Leak Sandwich Speaker where the cone of the woofer was manufactured by sandwiching two cones of aluminium with an elastopolymer fillin...

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BURGLAR ALARMS HAVE COME A LONG WAY Don't you just love this picture from 1952 that shows an electric eye sensor connected to a burglar alarm. There are so many things that are quaint about this picture, not least the clunky alarm system sensor. I don't know which is my favourite bit - the yellow wallpaper - perhaps the house owner wo...

The 1950s

BURGLAR ALARMS HAVE COME A LONG WAY Don't you just love this picture from 1952 that shows an electric eye sensor connected to a burglar alarm. There are so many things that are quaint about this picture, not least the clunky alarm system sensor. I don't know which is my favourite bit - the yellow wallpaper - perhaps the house owner wo...

EDDYSTONE, DRIVE CORD JOCKEY WHEEL, GEARED EDDYSTONE, DRIVE CORD JOCKEY WHEEL, GEARED

CV1377, Military Spec, GZ34, Mullard, f32 B4F1, Blackburn June 1964 manufacture CV1377, Military Spec, GZ34, Mullard, f32 B4F1, Blackburn June 1964 manufacture

6SN7GT, TUNG-SOL, GREY GLASS, FAT BASE, WHITE BASE PRINT, SLIGHT MICANOL BASE CRACK, 6SN7 STC FOOTSCRAY BLACK GLASS FAT BROWN BASE CV1988 MILITARY 6SN7GT 1950's MANUFACTURE

6SN7GT, KENRAD , GREY GLASS, FAT BASE, WHITE BASE PRINT, ETCHED CARTOUCHE, 1942 PRODUCTION, 6SN7 STC FOOTSCRAY BLACK GLASS FAT BROWN BASE CV1988 MILITARY 6SN7GT 1950's MANUFACTURE

CV378, COSSOR, ELECTRONIC TUBES, HIGH WYCOMBE FACTORY, 53KU, , BROWN BASE, JANUARY 1952 PRODUCTION CV378, COSSOR, ELECTRONIC TUBES, HIGH WYCOMBE FACTORY, 53KU, , BROWN BASE, JANUARY 1952 PRODUCTION On offer we have an incredibly scarce device for sale. It's a Cossor produced 53KU, showing the characteristic balluster envelope, the parallelogram electrode cage and the swan neck getter plate. A tru...

OSRAM FAT BOY KT66 VT75 WARTIME ISSUE GREY GLASS OSRAM FAT BOY KT66 VT75 WARTIME ISSUE GREY GLASS The British Marconi-Osram GEC Valve Company of England introduced in 1937 the legendary KT66, K.T standing for kinkless tetrode. This designation was given as when the performance of the valve is measured from it's output curve it was found to be line...

6L6G, WESTINGHOUSE, MATCHED PAIR, CANADA WARTIME MANUFACTURE, RED BASE PRINT 6L6G, WESTINGHOUSE, MATCHED PAIR, CANADA WARTIME MANUFACTURE, RED BASE PRINT

UPCYCLE A MILITARY MICROPHONE "Upcycling" now there's a phrase that's a euphemism for repurposing old junk into something either aesthetically pleasing and/or useful. There again from my standpoint, my definition would be the occasional ruin of scarce and historical artefacts. But pressing things into alternative uses is not a n...

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PARMEKO, P2642, 8K OUTPUT TRANSFORMER, FOR MULLARD 5-10 AMPLIFIER, EL84 IN PUSH PULL

PARMEKO, P2642, 8K OUTPUT TRANSFORMER, FOR MULLARD 5-10 AMPLIFIER, EL84 IN PUSH PULL

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