Project Logs

Collapse

• Old high-reliability computers

  Don Straney • 4 days ago • 0 comments

  Added photos and some descriptions of SSI (small-scale integration; logic-gate-level) IC-based computers from the 70's; both the AN/UYK-7 standard Navy computer, and a Marconi-Elliott board from an aircraft navigation computer or system.  It's fun to see the amount of logic in a CPU split out into so many individual parts, along with the old insect-looking flatpack IC packages, and the winding hand-drawn traces.
  

• Audio Signal Discriminator

  Don Straney • 11/21/2023 at 04:10 • 0 comments

  Added BAE Systems Audio Signal Discriminator, whose circuitry is simple but whose workings are a total mystery to me.  Any insights or outside knowledge welcome here in decoding what this is supposed to do.

• Elliott Nautical Miles Indicator

  Don Straney • 10/31/2023 at 02:52 • 0 comments

  Added the Elliott Air Nautical Miles Indicator: this is one of the very occasional convenient devices where someone else (the Le Labo De Michel youtube channel) has already done the hard work of figuring out how it works!  The photos are mostly there for anyone wanting a better static, high-resolution view than can be done in a video.
  

• Raytheon UHF receiver

  Don Straney • 10/07/2023 at 20:10 • 0 comments

  Added an entry for the (existing) Raytheon UHF receiver writeup; made the title a bit more general as there's going to be more future material that falls outside the strict definition of aircraft electronics, but is similar in spirit.
  

• Voice Warning Generator

  Don Straney • 10/03/2023 at 20:37 • 0 comments

  Added the McDonnell Douglas Voice Warning Generator from an F-4; hoping to look inside the hybrids at some point.
  

View all 5 project logs