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Tag Archives: tube
Raytheon, “The Healthy Tubes”
What makes these tubes healthy compared with the others, anyway? Radio Retailing, April 1929
Posted in Collections, Vintage
Tagged healthy tubes, raytheon, tube, tubes, vintage ad
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Vintage Engineering is Beautiful
EL84 output tubes in an EICO HF-81 integrated stereo amplifier.
Posted in Collections, Photos, Vintage
Tagged 6bq5, eico hf-81, EL84, electronics, push-pull, tube, tube glow, tubes, vacuum tubes, vintage engineering is beautiful
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New Toy: HP 143 Wide-Screen Oscilloscope Mainframe Restoration – [Part 1]
At the risk of becoming a test equipment collector, I am picking up a few pieces of vintage test equipment that need some work, but will be very useful pieces of shop gear as well as interesting pieces of history … Continue reading
Posted in Collections, Electronics, Hardware, Projects, Test Equipment, Toys, Vintage
Tagged 1402a, 1423a, 143a, 143a mainframe, compactron, dual-trace amplifier, HP, hp 143a, mainframe, nuvistor, oscilloscope, oscilloscope mainframe, plug-in mainframe, plug-in oscilloscope, scope mainframe, timebase, toy, toys, transistor, tube, vintage, vintage oscilloscope
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1937 Detrola 139E Vintage Radio Repair
I just finished a new project over at Rain City Audio – 1937 Detrola 139E Vintage Radio Repair
This Detrola 139E chassis was on my bench recently while the cabinet was being refinished. It’s a striking 1937 radio with an art deco stationized dial with a very large tuning area, and even though it only has 5 radio tubes, it’s a great performer. I replaced the rectifier tube and rebuilt the electronics of the radio followed by testing and an alignment; now it’s very selective and will be a safe and reliable appliance for someone’s home.
Check it out at http://www.raincityaudio.us/blog/1937-detrola-139e-vintage-radio-repair! Continue reading
Posted in Radios and Tubes, Vintage
Tagged 139E, antique radio, capacitor, capacitor replacement, Detrola, Detrola 139E, old radio, repair, tube, tube radio, tuning eye, vacuum tube, vintage, vintage radio
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Oregon Electronic Model A3 Variable Voltage Regulated Power Supply
Here’s another project I just finished at Rain City Audio:
This vacuum tube power supply from an engineer’s test bench can replace a radio or test circuit’s power supply to help with troubleshooting or experiments, with up to 400V for B+ and 6.3V 5A for the heaters. It needed some new capacitors, then fired right up and works perfectly! Continue reading
Posted in Electronics, Radios and Tubes, Vintage
Tagged A3, antique radio, B+ supply, bias supply, capacitor, capacitor replacement, Model A3, Oregon Electric, Oregon Electronic, Oregon Electronics, plate supply, power supply, repair, restoration, tube, tube radio, vacuum tube, Variable Voltage Regulated Power Supply, vintage
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Antique Tube Box Art
I took a gamble on a box-lot of parts from Craigslist, and it turned out to be an excellent find. One of the things I found was a collection of tubes in their original boxes from 1926. That doesn’t happen … Continue reading
Posted in Photos, Radios and Tubes, Vintage
Tagged 01A, antique radio, Arcturus, art, AX-301A, box art, Craigslist, Cunningham, CX-301A, Montgomery Ward, rca, triode, tube, tube box art, UX-201A, vacuum tube, vintage radio
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New Project Idea: Oddball Tube Hi-Fi Amplifier
I’m looking for a new summer project, and think I’m going to branch off from repairing radios to building some of my own gear. I’m interested in making a tube hi-fi stereo amplifier to go with my old speakers – … Continue reading
Posted in Electronics, Projects
Tagged 5AQ5, 5AQ5 amplifier, 6AQ5, 6V6, amplifier, audiophile, hi-fi, oddball tubes, Silvertone 69A, tube, vacuum tube
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