Uploaded March 2026 | Updated September 2026, 1 week ago

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We start working on an HP 3968A 8-channel instrumentation recorder. Although it looks like an audio tape recorder - and could be used as such - it's made to record instrumentation data. We want to use it as the flight voice and telemetry data recorder in our Apollo setup. And thanks to a Patron, we also get our hands on an HP 3964A, the 4-channel version.

HP 3964A and 3968A Manual: archive.org/details/hp-3964-a-and-hp-3968-a-instrumentation-tape-recorder-manual-prefix-1821-a-03964-90007-march-1979

Stuff that supports the channel:
- Support us on Patreon: patreon.com/curiousmarc
- Amazon links for the tools I use in the lab: curiousmarc.com/amazon-links
- Channel merch on Fourthwall: curiousmarc-shop.fourthwall.com
- Legacy channel merch on Teespring (I don't have everything transferred to Fourthwall yet): teespring.com/stores/curiousmarcs-store

"Elevator Music" Credit: Crinoline Dreams by Kevin MacLeod

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Contact info: youtube.com/curiousmarc/about