Marconi sync pulse generator (SPG) BD637

This is the lower half of the Marconi BD637 SPG, the cable at the top connects the two units together. The card in between the capacitors is a test report from Marconi's. For it's age this SPG is in good condition. It is the only known example to survive.

	Marconi sync pulse generator (SPG) BD637

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of 3	This is the lower half of the Marconi BD637 SPG, the cable at the top connects the two units together. The card in between the capacitors is a test report from Marconi's. For it's age this SPG is in good condition. It is the only known example to survive.