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| My newest oldest oscilloscope - GEC M861B Miniscope |
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| dazz1:
Hi My newest scope is also the oldest thing I own. It is a late 1940's, early 1950's, GEC M861B Miniscope. A marvel of miniaturization at a time when test equipment weighed as much as a sack of coal and used enough power to heat a small orphanage. My research reveals that this model of scope is the direct descendant of a scope (model M861A?) developed to fault-find clandestine radios in WW2 enemy occupied territory. The post war version was sold to traveling TV repair men (probably not many TV repair ladies at that time). It's military origins can be seen in the knobs. This style was used on aircraft to allow crew to turn the knobs while wearing thick gloves. It features an astonishing 70kc/s bandwidth with a 1 1/2 inch CRT and a weight of just 7 1/2 pounds. The plan is to restore it to working condition. I have not attempted to apply power yet because it has probably been in storage for decades. The electrolytic caps won't be caps anymore. If anyone has a spare M862B Double Beam Unit, or a M863B IF Alignment Unit lying around, I'd be a keen buyer. |
| tautech:
Oh so you did buy it ! :o Next you'll be joining the TEA thread. :scared: |
| dazz1:
--- Quote from: tautech on March 30, 2024, 07:37:57 am ---Oh so you did buy it ! :o --- End quote --- I couldn't resist. ;D |
| adinsen:
What a beauty, congrats. I love the carrying case 8) |
| dazz1:
--- Quote from: tautech on March 30, 2024, 07:37:57 am ---... Next you'll be joining the TEA thread. :scared: --- End quote --- Maybe an admin should/could shift this post to the TEA thread? |
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