Granada Television Brochure, 1970s
Long Gone UK TV Shops
Memories of a Derwent Field Service Engineer
PYE Australia Circa 1971
Radios-TV VRAT
Fabulous Fablon
Thorn TX10 Chassis
Crusty-TV Museum, Analogue TV Network
Philips N1500 Warning!
Rumbelows
Thorn EMI Advertising
Thorn’s Guide to Servicing a VCR
Ferguson 3V24 De-Robed
Want to tell us a story?
Video Circuits V15 – Tripler Tester
Thorn Chassis Guide
Remove Teletext Lines & VCR Problems
Ceefax (Teletext)
Suggestions
Website Refresh
Colour TV Brochures
1970s Lounge Recreation
CrustyTV Vintage Television Museum
Linda Lovelace Experience
Humbars on a Sony KV2702
1972 Ultra 6713
D|E|R Service “The Best”
The one that got away
Technical information
The Line Output Stage
The map
Tales of a newly qualified young engineer.
Tales of a Radio Rentals Van Boy
Sanyo SMD
Disastrous Company Rebranding
1969 Philips G22K511
Memories Of The TV Trade
Crazy house
Dirty TV screens
Dual Standard and Single Standard CTV’s
Radios-TV on YouTube
The Winter of 62/63
A domestic audio installation
1979 Ferguson Videostar Deluxe 3V16
Music centre modifications
Unusual record player modification
B&K 467 Adapters
Mishaps In The Trade
1971 Beovision 3200
1971 Bush CTV1120
Granada Television Brochure, 1970s
Long Gone UK TV Shops
Memories of a Derwent Field Service Engineer
PYE Australia Circa 1971
Radios-TV VRAT
Fabulous Fablon
Thorn TX10 Chassis
Crusty-TV Museum, Analogue TV Network
Philips N1500 Warning!
Rumbelows
Thorn EMI Advertising
Thorn’s Guide to Servicing a VCR
Ferguson 3V24 De-Robed
Want to tell us a story?
Video Circuits V15 – Tripler Tester
Thorn Chassis Guide
Remove Teletext Lines & VCR Problems
Ceefax (Teletext)
Suggestions
Website Refresh
Colour TV Brochures
1970s Lounge Recreation
CrustyTV Vintage Television Museum
Linda Lovelace Experience
Humbars on a Sony KV2702
1972 Ultra 6713
D|E|R Service “The Best”
The one that got away
Technical information
The Line Output Stage
The map
Tales of a newly qualified young engineer.
Tales of a Radio Rentals Van Boy
Sanyo SMD
Disastrous Company Rebranding
1969 Philips G22K511
Memories Of The TV Trade
Crazy house
Dirty TV screens
Dual Standard and Single Standard CTV’s
Radios-TV on YouTube
The Winter of 62/63
A domestic audio installation
1979 Ferguson Videostar Deluxe 3V16
Music centre modifications
Unusual record player modification
B&K 467 Adapters
Mishaps In The Trade
1971 Beovision 3200
1971 Bush CTV1120
Colour CRT development
Was this the forerunner of the single electron gun, stripe phosphor CRT. From PT Jan 1962.
Frank
I'll bet it was an interesting project to work on! - I'm just visualising a single electron beam and trying to imagine the beam being turned on/off at the correct intensity for the correct length of time at the correct time to ensure that only the intended colour(s) of phosphor were energised. I can also imagine getting the phosphors equally matched, to all emit an equal/correct luminosity, would be something of a challenge.
One thing intrigues me.... With the reference to "Zebra" are we to assume the colours were laid down in stripes that ran all the way from top to bottom of the screen? Or were they laid out more along the lines of a slot mask PIL tube? In groups of three stripes that overlapped with the groups above and below?
I was thinking of continuous stripes from top to bottom, or side to side for that matter but an interesting point.
Thats the only information I have found, but will look further if I have time.
A lot more information on Wikipedia, not had chance to read it.
https://en.m.wikipedia.org/wiki/Beam-index_tube
Frank
Beam index CRT. Various proposals were tried and tested, Appletube, Zebratube etc. https://visions4netjournal.com/indextron/
I do remember there was a topic on Radiofil about this type of tube.
Till Eulenspiegel.
I see Frank has already posted a link but as soon as I saw the piece I thought "ah, beam-indexing tube".
The major advantage was the much greater efficiency as energy was not lost passing the beam through the shadow mask, but would have been offset by the complexity of multiplexing that single gun with R, G and B signals and getting the timing right. For the record, that's how a B+K 467 works - it multiplexes the HT feeds.
It is fascinating to see that some small beam-indexing tubes made it to production.
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