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1A7: Difference between revisions
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Type 1A7A remained available until the end of the [[500-series scopes|500-series]] line. | Type 1A7A remained available until the end of the [[500-series scopes|500-series]] line. | ||
<blockquote> | |||
[[John Addis]] [[Preamble DA1855|says]]: | |||
The 1A7A (designed by Thor Hallen) and the [[7A22]] (designed by [[Val Garuts]]) used essentially the same circuit. Exactly who came up with the brilliant input circuit is lost to history. The 1A7A came out first, but Thor had worked as evaluation engineer for Val Garuts. Val does not remember who created the circuit, and Thor died in 2002. | |||
</blockquote> | |||
{{BeginSpecs}} | {{BeginSpecs}} | ||