This Western Electric 550 or 555 manual switchboard was used in the OUSD Administrative HQ when it was in the old bldg on Glassell that is now the Chapman University College of Law. It was rescued from the dump. I hope to find a new local home for it where it can be seen by
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Also posted to FB group vintage transistor radios. Sounds like the SW bands could be used for local broadcasts. A segment of the band could be ‘designated’ as a supplementary AM band. Broadcasters would be limited to low power, enough to cover just a small city. Then the regulators could allow electronic manufacturers to sell
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From FB group Orange Talk Heidi Norris Dawson Okay, then ‘they’ pack up and move to a different county or state. Turns out that the country’s biggest private employer, Walmart, or possibly some other retail company, is the only employer with jobs available. So ‘they’ decide to take out a huge student loan and go
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For FB group Building Transistor Radios Bob Johansen After building several of the regenerative receivers, I think I figured out the reason why regens are so difficult. The circuit has to do so much with very few parts. If one part value is changed to improve one thing, it adversely affects something else. The tickler
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For FB group Building Transistor Radios When I started building regen receivers, the first thing I found I needed was a simple signal generator. I have a function generator, but every time I want a different frequency, I had to readjust the controls. So I built a few RF oscillators to put close to the
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Also FB group Building Transistor Radios When I was a teenager, my high school friend and I worked for a guy who had acquired many thousands of dollars worth of test equipment. We used equipment with famous names such as Hewlett Packard, General Radio, Boonton, Fluke and many others. In the army, it was the
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From FB group Bell Telephone… Keelan Lightfoot I have never seen any of the switching equipment, but it had to be electromechanical, something along the likes of strowger switches. The dial phone my friend has was working many decades ago, but the oil has gummed up. It has five vertical levers, their ends stick out
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We were discussing gong type telephone bells on FB group Bell Telephone… Back maybe ten years ago I snagged an AT&T bell out of a bldg before the bldg was remodeled. It was a bell without an enclosure, the two bells were exposed, with the clapper between them. It connected directly to the incoming line
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Happy New Year! I replied to a comment by George Glavas on FB group Vintage Transistor Radios George Glavas I’ve never read any documents to back up your claim that “…germanium transistors lose gain as they age.” I think that people believe this because old equipment has lost gain. But all of the problems I’ve
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