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:
Sunday, July 23, 2023

First Contacts with 15-10 Rig -- Two Atlantic Crossings

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  I was just testing it, working (as usual at this stage) on final amplifier stability.   Then I heard ON5WO calling CQ.   I could not resis...
3 comments:
Tuesday, July 18, 2023

"Onda Corta" ("Shortwave") -- A Short Film about Ham Radio in Venezuela (Please ID the Boatanchors!)

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https://youtu.be/J1QlKykhR2M?t=583 I have it cued up to 9:43 -- at that point Ramon is in his ham shack.   Lots of good stuff in there!  Ple...
2 comments:
Monday, July 17, 2023

Going Down the Phase Noise Rabbit Hole with the IMSAI Guy (VIDEO) -- Is there a better way?

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Chimera:   2 . a thing that is  hoped  or  wished  for but in fact is  illusory  or impossible to achieve. (from the Oxford English Language...
6 comments:
Sunday, July 16, 2023

The Super Islander Mark IV -- A Cuban DSB Transceiver Made From CFL Lightbulb Parts

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Trevor Woods also sent us this report from Arnie Coro.  It is not clear to me what difference (if any) there is between the Super Islander M...
3 comments:
Saturday, July 15, 2023

The Jaguey Five -- The Solid State Cuban DSB Rig -- Circuit Description

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Obviously we need a picture of a Jaguey transceiver.  "Made in Jaguey Grande"  Trevor Woods found this report from Arnie Coro (SK)...
Tuesday, July 11, 2023

Homebrew in Namibia -- Joe Noci V51JN -- -- The Wizard of Sawkopmund

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  Here at SolderSmoke I like to highlight the homebrew adventures of far-flung radio builders.  Joe V51JN melts solder in an especially exot...
1 comment:
Monday, July 10, 2023

Martein's Bandpass Filters - PA3AKE

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Above you can see the really nice 15 meter filter that I built using data provided by Martein PA3AKE.  https://martein.home.xs4all.nl/pa3ake...
9 comments:
Sunday, July 9, 2023

Progress Report Video on my 15-10 Meter Homebrew SSB Transceiver

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The receiver is mostly done on my 15-10 rig, and I am following Farhan's BITX20 advice: "pause at this point and listen to the rec...
7 comments:
Thursday, July 6, 2023

The TEK 465 'Scope Used to Create Pong and the Apple II

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Wow, this is almost enough to make me take another shot at repairing my TEK 465.    
2 comments:
Wednesday, July 5, 2023

Quetzal-1 -- The Guatemalan CubeSat

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  Wow, here's another piece of tech news from a place in which I have some experience.  Yesterday I posted about the Telekino developed ...