Origins of the 405 line system.

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Origins of the 405 line system.

beamcurrent

Senior Transmitter Engineer

Posts: 138
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Location: Camberley

#16

03-11-2016, 09:57 PM

All this talk of division ratios, reminded me of RCA solution for a portable SPG in 1939.

http://www.tvcameramuseum.org/rca/1939fcam/1939fp4.html

BTW I have a valve 405L SPG by EMI c. 1960 with 5x3x3x9 = 405

Regards Brian

Museum of the Broadcast TV Camera

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Messages In This Thread

Origins of the 405 line system. - by Geordie McBoyne - 02-11-2016, 01:08 PM

RE: Origins of the 405 line system. - by ppppenguin - 02-11-2016, 11:55 PM

RE: Origins of the 405 line system. - by Mike Watterson - 03-11-2016, 01:33 PM

RE: Origins of the 405 line system. - by Synchrodyne - 03-11-2016, 10:14 PM

RE: Origins of the 405 line system. - by ppppenguin - 03-11-2016, 03:30 PM

RE: Origins of the 405 line system. - by Murphyv310 - 03-11-2016, 05:24 PM

RE: Origins of the 405 line system. - by Mike Watterson - 03-11-2016, 05:40 PM

RE: Origins of the 405 line system. - by Murphyv310 - 03-11-2016, 05:49 PM

RE: Origins of the 405 line system. - by `FRANK.C - 06-11-2016, 01:25 PM

RE: Origins of the 405 line system. - by Mark Hennessy - 03-11-2016, 06:19 PM

RE: Origins of the 405 line system. - by Murphyv310 - 03-11-2016, 06:35 PM

RE: Origins of the 405 line system. - by Mike Watterson - 03-11-2016, 06:53 PM

RE: Origins of the 405 line system. - by Murphyv310 - 03-11-2016, 07:53 PM

RE: Origins of the 405 line system. - by Geordie McBoyne - 03-11-2016, 09:01 PM

RE: Origins of the 405 line system. - by Mike Watterson - 03-11-2016, 09:16 PM

RE: Origins of the 405 line system. - by Geordie McBoyne - 03-11-2016, 09:35 PM

RE: Origins of the 405 line system. - by ppppenguin - 03-11-2016, 09:45 PM

RE: Origins of the 405 line system. - by beamcurrent - 03-11-2016, 09:57 PM

RE: Origins of the 405 line system. - by ppppenguin - 04-11-2016, 07:12 AM

RE: Origins of the 405 line system. - by Gryphon - 06-11-2016, 11:37 AM

RE: Origins of the 405 line system. - by colly0410 - 05-11-2016, 04:18 PM

RE: Origins of the 405 line system. - by ppppenguin - 06-11-2016, 04:09 PM

RE: Origins of the 405 line system. - by Gingpeakin - 06-11-2016, 05:05 PM

RE: Origins of the 405 line system. - by Gryphon - 06-11-2016, 05:47 PM

RE: Origins of the 405 line system. - by ppppenguin - 06-11-2016, 06:54 PM

RE: Origins of the 405 line system. - by Gryphon - 06-11-2016, 07:12 PM

RE: Origins of the 405 line system. - by Murphyv310 - 06-11-2016, 07:19 PM

RE: Origins of the 405 line system. - by ppppenguin - 06-11-2016, 07:25 PM

RE: Origins of the 405 line system. - by Gryphon - 06-11-2016, 07:54 PM

RE: Origins of the 405 line system. - by Mike Watterson - 06-11-2016, 08:36 PM

RE: Origins of the 405 line system. - by Murphyv310 - 06-11-2016, 07:30 PM

RE: Origins of the 405 line system. - by ppppenguin - 06-11-2016, 08:08 PM

RE: Origins of the 405 line system. - by ppppenguin - 06-11-2016, 08:28 PM

RE: Origins of the 405 line system. - by ppppenguin - 06-11-2016, 08:48 PM

RE: Origins of the 405 line system. - by Brianc - 06-11-2016, 11:29 PM

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