Monday, August 28, 2023

But How Does the Michigan Mighty Mite REALLY Work?

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Dean KK4DAS and I were talking to Mark, a new homebrewer.  After we sang the praises of the Michigan Mighty Mite,  Mark asked us a good ques...
4 comments:
Friday, August 25, 2023

Who is the IMSAI Guy?

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I like his videos.   https://www.youtube.com/watch?v=x3IPtBzxAgE https://www.youtube.com/watch?v=Bgrubw6B_us&t=5s W6UAB? 
1 comment:
Wednesday, August 23, 2023

Homebrew Transistors

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Hang your heads in shame, my friends.  This dude is getting ready to homebrew his own transistors.  None of that store-bought stuff for him....
3 comments:
Sunday, August 20, 2023

15 Meter Homebrew SSB Rig As Heard in Mexico City

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  19 August 2023. Ralph XE1RK recorded part of our QSO and played it back to me. Thanks Ralph! I was running about 75 watts to a hex beam a...
2 comments:
Saturday, August 19, 2023

Valveman -- The Story of Gerald Wells

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Don't be deterred by the annoying test patterns at the start of this video.  Just skip past them.  The rest of the video is quite good. ...
2 comments:

More Ancient Technology Keeping Space Missions Alive

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  https://www.bbc.com/future/article/20230815-the-ancient-tech-keeping-space-missions-alive Three cheers for software.  Really. 
Wednesday, August 16, 2023

Working Indonesia and Chile with new 15-10 Homebrew Transceiver

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Conditions were good this morning, and the Radio Gods continue to favor homebrew rigs.  I got on 15 meters SSB with the new 15-10 dual bande...
2 comments:
Tuesday, August 15, 2023

The Wizard of Kerala (India) -- Denny VU2DGR -- SDR and HDR

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  His signal was just booming in on 20 meter SSB yesterday evening.  It was one of the strongest signals I've heard from India.  I wasn...
6 comments:
Monday, August 14, 2023

You have heard of the International Geophysical Year (IGY). But have you heard of the IQSY?

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  International Quiet Sun Year.  1964-1965.  Yes, that was a thing.  
Tuesday, August 1, 2023

Voyager, Canopus, JPL, and 74xx Logic Chips from the early 1970s

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"So somewhere out there in interstellar space beyond the boundary of the Solar System is a card frame full of 74 logic that’s been quie...
9 comments:
Sunday, July 30, 2023

Understanding Maxwell's Equations (video)

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And you should also look at the accompanying web site:  https://www.maxwells-equations.com/m/index.php#maxwells Writing about the equations,...
1 comment:
Friday, July 28, 2023

Phase Noise and the Radio Amateur

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A weak signal disappears in the phase noise of the stronger signal. The March 1988 QST provides a relatively clear explanation of what phase...
5 comments: