Uploaded January 2020 | Updated September 2026, 3 weeks ago

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So, these weird things. Can any any of you Bell System old timers (or anyone else) tell me what these modules are from, or anything about the weird hybrid transistor modules on the boards?



Help?


And if you want to reallyhelpme, whynot drop a buck or twoin the Patreon bucket?


patreon.com/Uniservo


Thanks!