Showing posts with label radio history. Show all posts
Showing posts with label radio history. Show all posts
Tuesday, December 9, 2025

"Homebrew you say? But did you DESIGN it yourself?"

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Raymond A. Heising  (1922) That is a question we get fairly regularly when we tell the other fellow that our rig is homebrew.  I often get t...
6 comments:
Tuesday, December 2, 2025

Grote Reber -- W9GFZ -- Radio Astonomy Pioneer, Homebrew Hero

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First off, what a great name. It is a real ham radio name.  Grote Reber.  And he was indeed a ham:  W9GFZ.    We don't have names like t...
5 comments:
Monday, December 1, 2025

Book Review: "Big Ear Two -- Listening for Other-Worlds" by John Kraus (1995)

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This book is kind of weird, but give it a chance.  The author seems too prone to describe the physical attributes of his colleagues, especia...
Friday, November 14, 2025

Early SSB in India: Espionage, Stolen Secrets, and Kleptomania

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  Earlier this month I had stumbled across a 1964 QST article entitled "A Sideband Transceiver, VU2 Style."  I forwarded the link ...
5 comments:
Saturday, May 17, 2025

MIT's Haystack Observatory and Dr. Herb Weiss

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We are really privileged to have among us ( and in the SolderSmoke Direct Conversion Hall of Fame) Phil Erickson W1PJE.   Phil is the Direc...
1 comment:
Thursday, April 10, 2025

The History of MOSFETs -- Let us Remember the 40673. The IRF510. And others...

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Lots of great history explained in this video.  I found myself thinking about our beloved 40673 dual gate MOSFET:  https://hackaday.com/2016...
4 comments:
Monday, February 17, 2025

Direct Conversion Receivers -- Some Amateur Radio History

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Click on each of the 6 pages below for a clearer view, or on the N5DUX  link at the bottom for a .pdf https://www.n5dux.com/ham/files/pdf/Di...
5 comments:
Tuesday, January 14, 2025

Shock and Awe: The Story of Electricity --- Wonderful Video by Jim Al-Khalili (sent to us by Ashish N6ASD)

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From Ashish N6ASD -- Oil Lamps and Electronics Here is the link to the video:  https://www.youtube.com/watch?v=Gtp51eZkwoI First, thanks to ...
3 comments:
Sunday, January 12, 2025

Some History of Homebrew Ham Radio -- From Wikipedia and from K0IYE

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Frank Harris K0IYE's Homebrew Station From Wikipedia:   https://en.wikipedia.org/wiki/Amateur_radio_homebrew   In the early years of ama...
2 comments:
Tuesday, October 8, 2024

The Transistor that Changed the World -- the MOSFET

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Another great video from Asianometry.   My only quibble is that it kind of left unclear the differences between JFETs and MOSFETs.  After al...
2 comments:
Saturday, September 7, 2024

Sony and the Transistor

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  https://www.youtube.com/watch?v=7pi9k5n7Wrw I found the comment about Sony's belief that NPN transistors are superior to PNP very in...
1 comment:
Tuesday, August 20, 2024

"The Far Sound" -- Bell System Video from 1961 -- Good Radio History (video)

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This is a really OLD video, but there is a lot of great material here:  -- Tubes.  (Valves or Thermatrons) -- Coax.   -- Frequency Division ...
4 comments:
Saturday, May 11, 2024

Jens OZ1GEO's AMAZING Radio Museum

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Brace yourselves.  This is just too much, too much radio history, too much cool stuff.  We are into ham radio sensory overload territory h...
3 comments:
Thursday, March 7, 2024

The Wizard of Schenectady -- Charles Proteus Steinmetz

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Such a beautiful article.   Ramakrishnan VU2JXN sent it to me.  It reminded me of how puzzeled we were when we found "Schenectady"...
10 comments:
Wednesday, March 6, 2024

N6ASD Builds a Zinc-Oxide Negative Resistance Transmitter (and a Spark/Coherer rig)

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I saw this video and post on Hackaday this morning: https://hackaday.com/2024/03/05/making-a-crystodyne-radio-with-zinc-oxide-and-cats-whisk...
3 comments:
Monday, February 19, 2024

Jean Shepherd has Trouble with his Heising Modulator (and his date)

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This is probably Jean Shepherd's best program about homebrew ham radio.  It is about how we can become obsessed with the problems that a...