CuriousMarc
Computers

Apollo Comms Part 18: Updata Link Analog Mystery Solved

July 2, 2022 CuriousMarc

We fix our Updata Link box by solving the mystery of the missing analog components. We X-Ray mysterious Motorola modules, fight with misbehaving LC circuits, and help 1960’s circuits with a dose of 1970’s technology. Ken’s blog article about the X-ray reverse engineering of the Motorola modules: https://www.righto.com/2022/06/x-ray-reverse-engineering-hybrid-module.html Eric’s new …

CuriousMarc
Computers

30 min of Analog Plotter Therapy

June 23, 2022 CuriousMarc

Are you experiencing engineering related stress? Did magic smoke escape from your new circuit, is your firmware inexplicably fighting your hardware, has your autonomous robot escaped through the back door, or has your rocket just launched sideways? Happens to the best in the business. But worry not, we have one …

CuriousMarc
Computers

HP 7035B X-Y Recorder Restoration Part 2: Back to it’s Former Glory.

June 21, 2022 CuriousMarc

Part 2 of our analog X-Y recorder repair. It’s almost back to perfection. Almost. Our sponsors – PCBWay: fast turn PCBs, https://www.pcbway.com – Electro-Rent: https://www.electrorent.com – Keysight: test instruments: https://www.keysight.com – Samtec: connectors: https://www.samtec.com Support the team on Patreon: https://www.patreon.com/curiousmarc Buy our merch on Teespring: https://teespring.com/stores/curiousmarcs-store Get more info on …

CuriousMarc
Computers

HP 7035B X-Y Recorder Restoration Part 1: Photo-chopper Inside!

June 21, 2022 CuriousMarc

We bring back to life an analog X-Y recorder donated by a viewer. And run into photo-chopper trouble. Our sponsors – PCBWay: fast turn PCBs, https://www.pcbway.com – Electro-Rent: https://www.electrorent.com – Keysight: test instruments: https://www.keysight.com – Samtec: connectors: https://www.samtec.com Support the team on Patreon: https://www.patreon.com/curiousmarc Buy our merch on Teespring: https://teespring.com/stores/curiousmarcs-store …

CuriousMarc
Computers

Heads Up: Lab Tour Video on Keysights’ Channel

June 19, 2022 CuriousMarc

If you don’t know it already, our sponsor Keysight has released a video of their tour of my lab. You can see it here: https://youtu.be/qwocVH3_1Eo Our sponsors – PCBWay: fast turn PCBs, https://www.pcbway.com – Electro-Rent: https://www.electrorent.com – Keysight: test instruments: https://www.keysight.com – Samtec: connectors: https://www.samtec.com Support the team on Patreon: …

CuriousMarc
Computers

HP 9825 Program Tapes Recovery

June 14, 2022 CuriousMarc

We recover original HP program tapes for our HP 9825 and run them to test our vintage HP equipment. Mr. Fancy Pants would be proud of us. Recovered software to be posted soon on my website. I’ll add the link when it’s done. Previous HP mini-cartridge tape videos: Tape drives …

CuriousMarc
Computers

Apollo Comms Part 16: Opening the Pre-Modulation Processor

June 7, 2022 CuriousMarc

We open the Collins Pre Modulation Processor, in anticipation for powering it up. Visit our new sponsor R&D Microwaves: https://www.rdmicrowaves.com/ Ken’s blog article about the PMP: https://www.righto.com/2022/05/talking-with-moon-inside-apollos.html Apollo Comms Playlist: https://www.youtube.com/watch?v=v49ucdZcx9s&list=PL-_93BVApb58SXL-BCv4rVHL-8GuC2WGb Links to doc: https://www.curiousmarc.com/space/apollo-s-band-communications https://virtualagc.github.io/virtualagc/QuestForInfo.html https://www.ibiblio.org/apollo/ Our sponsors – PCBWay: fast turn PCBs, https://www.pcbway.com – ElectroRent: https://www.electrorent.com – Keysight: …

CuriousMarc
Computers

IBM 729 Tape Drive Magnetic Clutch Job (re-upload)

June 1, 2022 CuriousMarc

Our old IBM tape drive from the 1950’s IBM 1401 mainframe needs a clutch job. From the days when you’d better know how to wield a wrench to repair avant-garde electronics. Our sponsors – PCBWay: fast turn PCBs, https://www.pcbway.com – Electro-Rent: https://www.electrorent.com – Keysight: test instruments: https://www.keysight.com – Samtec: connectors: …

CuriousMarc
Computers

IBM 729 Tape Drive Magnetic Clutch Job

June 1, 2022 CuriousMarc

Our old IBM tape drive from the 1950’s IBM 1401 mainframe needs a clutch job. From the days when you’d better know how to wield a wrench to repair avant-garde electronics. Our sponsors – PCBWay: fast turn PCBs, https://www.pcbway.com – Electro-Rent: https://www.electrorent.com – Keysight: test instruments: https://www.keysight.com – Samtec: connectors: …

CuriousMarc
Computers

Tektronix 222 Mini CRT Oscilloscope Restoration

May 21, 2022 CuriousMarc

The Tekronix 222 oscilloscope is a classic Tek collectible. Hard to find a cuter mini-CRT scope and the minimalist yet highly functional user interface is in a league of its own. And it’s digital to boot! In the opinion of some (me included), it still can’t be matched by today’s …