Side-by-side comparison of Bulova Accutron Astronaut N and Seiko SKX781 'Orange Monster'. Of particular note is the disparate sweep second behavior and lume performance.

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Re-upload of previous video, fixed poor framerate.

Bulova Accutron Series 214 timepieces: Swiss chapter ring Spaceview 214 M6 (1966) and Astronaut N 214HN M9 (1969), shown in normal operation, including demonstration of luminous function .

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RGB LED flashlight, PWM cycling made visible with an oscillating string.

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The Vintage Technology Association at Dayton Hamvention 2009, part two.

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The Vintage Technology Association at Dayton Hamvention 2009, part one.

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Devices shown:

General Electric GL-6452 9.35 GHz reference cavity
Microwave Associates 6229 missile guidance pulse magnetron
Raytheon QK291 two-cavity Ka band klystron
Raytheon RK2K25 reflex klystron
Raytheon 2K45 reflex klystron
RCA 1A5V4 traveling wave tube
Sperry 2K35 multi-cavity klystron
Sperry 2K36 klystron frequency multiplier
Sperry 2K41 klystron
Sperry 410R two-cavity klystron
Sperry SRC8A experimental klystron
Varian V-153 relay klystron
Varian VA-220G relay klystron
Varian VA-221E relay klystron
Varian VA-806F 2kW water-cooled X-band klystron
Western Electric 2K50 reflex klystron (Bell Labs / USN pre-production)

There's also a conventional microwave oven magnetron and several X-band waveguides shown.

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GC10D in normal operation.

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The Yilane Systems YS-150 magic eye tube demonstrator is a desktop tester and demonstrator built around a Sovtek EM84 miniature magic eye tube. The YS-150 features two speed settings and is powered by 5VDC, making it suitable for being used with battery power. The YS-560 also features an under-tube LED light.

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Elesta EZ10 nomotron in normal operation.

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The 6167 is a very unusual counting tube. Instead of having pins or bent cathodes like most other dekatrons, the 6167 uses tiny springs for its cathodes. Each spring has a small finger, which exits the top of the spring and hangs over the center of an adjacent cathode. During operation the glow will rest in the center of each spring, jumping to the finger only during a glow transfer. The 6167's unusual cathode construction makes it a unidirectional tube, with ten output cathodes and ten guide cathodes. The guide cathodes are spit into two groups of five, to allow for base five or base ten counting. The tube actually has 21 cathodes, a single "zeroing" cathode sits outside the counting ring and feeds into the first count position at an angle. The tube can be reset to the zero position by pulling the zeroing cathode to ground without interrupting the counting loop. The tube also has a supplemental anode, which sits between the normal anode and the final output cathode in the counting loop. This anode is used to provide a carry without interrupting the counting loop, the supplemental anode is pulled low as the glow transfer passes by it.

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Lamina Titan RGB+ LED light engine closeup. The Titan is being driven by a LuxDrive QuadPuck four-channel constant current drive with PWM dimming and DMX controller interface. The QuadPuck is running in diagnostic mode, performing an RGB cycle test. The Titan is running at a low test current, 400ma per channel. At this power level, the Titan produces 300 lumens of composite white, about 1/3 its maximum output. The strange interference pattern in the lens flare is a harmonic interaction between the PWM brightness control and the framerate of the camera.

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Bulova Accutron TE-series military clock, decimal days counter rollover function.



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