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AEG Koffer 150 with redded out 150W HPS lamp
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https://www.youtube.com/watch?v=hmnbIwM9y98
The lamp starts bluish mercury. I've seen its hot restrike once, and it takes very long time to restrike, due to the low frequency pulse ignitor inside this lantern.
I bet that when it would start to cycle, it would cycle in green.
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