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It was [[introduced in 1962]], along with the [[567]] and [[3S76]]. | It was [[introduced in 1962]], along with the [[567]] and [[3S76]]. | ||
[[Bob Webb]] and maybe [[Jim Geddes]] and possibly [[Cliff Moulton]] designed the Type [[77]], which | [[Bob Webb]] and maybe [[Jim Geddes]] and possibly [[Cliff Moulton]] designed the Type [[77]], which evolved into the 3T77. | ||
It triggers on either the internal trigger pick-off from the vertical plug-in or from an external trigger signal input. | It triggers on either the internal trigger pick-off from the vertical plug-in or from an external trigger signal input. |
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