Photo about Glass vacuum radio tubes. Isolated image on white background. Image of lamp, retro, history - 4020419

[21 Feb 2015 Update:  for an improved design, please see this newer post:  Improved Antenna Launcher .] I need to get wire-antenna support...

I think now is a good time to test all the receiver tubes.

1917 miniature one-tube receiver.

Auction Item 114

Sixpence Mk1 (oz5650) by Horst Fenchel 1994 - plan thumbnail

For Star subscribers: Swarms of autonomous robots could be mining minerals on the moon someday, and a University of Arizona team is leading the way on that goal for NASA.

MW / SW Tube Radio

How I built a great big motor glider for next to nothing and cardboard tubes.

Beautifully designed American radios mostly from the late 1930 - 1960 time period. To see all radios click on "older posts" at the bottom, right of each page. Click on photos to enlarge. Blog creation: 2011. ARF members welcomed!

Here's a rather tired JAN 807 made by General Electric, probably in the 1940s. After WWII, a lot of surplus equipment came on the civilian market, using 807s in the final RF amplifier. For years afterward, a whole generation of hams learned with small transmitters aimed at beginners, invariably using 807s or 6146s. There were also about 1001 other radio and audio uses for this classic tetrode. This particular old soldier undoubtedly served his country well. He's earned the right to just hang around and have his photo taken.

How does something that is misshaped, misidentified and misunderstood become one of my four blessings of 2016?  It made the list exactly because it lacks so much form.  Technology, especially medical technology, is important to each of us in our own special ways.  For those of us with diabetes, it is our lifeline.  For those […]

These small Japanese AM sets were produced and sold as the tube radio era was coming to a close. They were very inexpensive and usually priced at less than $10. Auction Item 22

A beautiful unrestored Zenith radio.

This radio was sold under a number of brand names in addition to the Sorrento brand. Auction Item 51

https://www.kickstarter.com/projects/retio/retio-the-moment-never-ends Didn't you get the memo? Retro is in! WandaVision takes us through the 50s, major artists like the Weeknd, Dua Lipa, and Silk Sonic are reintroducing us to the sounds of the 80s, and we're having a deja-vu moment with Cyberpunk, a sci-fi cult movement that was popularized in the 70s! Riding on that

Building Tube Audio Amplifiers

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