The Philips SDW-T is common in Israel. However i have never saw in my eyes a run-up of a SDW-T lamps.
When i first saw in my life white SON lamps, this was accidently in "Grand Canyon" mall, in a shop. There were many cylindrical fixtures of what i considered warm white compact MH lamp. Once in the "Grand Canyon" mall, i saw them turning off/on the lighting in this shop. However when this is happened, the fixtures with the "compact MH lamps", behaved vastly different then excepted. I saw them relit much earlier then excpeted for a compact MH lamps (About only 1.30-2 mins period instead of a long period) and... "hey!!! they aren't bluish white at all!!!, they are orange!!!", when this was happens, i instantly recognised them as the first white SON lamps i have even saw in reality in my life in my eyes.
Hi dor123, my first experience of the encounter on the white SON lamps that they have it surrounding the depression floor with surrounding post with 50 Watts white SON at the inside mall of Golf Mill Shopping Center at Niles, IL, USA. Unfortunately they were subsequently removed within a year due to what I believed probably light failure and can't find suitable replacement
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When i first saw in my life white SON lamps, this was accidently in "Grand Canyon" mall, in a shop. There were many cylindrical fixtures of what i considered warm white compact MH lamp. Once in the "Grand Canyon" mall, i saw them turning off/on the lighting in this shop. However when this is happened, the fixtures with the "compact MH lamps", behaved vastly different then excepted. I saw them relit much earlier then excpeted for a compact MH lamps (About only 1.30-2 mins period instead of a long period) and... "hey!!! they aren't bluish white at all!!!, they are orange!!!", when this was happens, i instantly recognised them as the first white SON lamps i have even saw in reality in my life in my eyes.
That was in the late 1980's.