Here is another new one:
Serving the worldwide community of radio-electronic homebrewers. Providing blog support to the SolderSmoke podcast: http://soldersmoke.com
Podcasting since 2005! Listen to Latest SolderSmoke
Sunday, January 18, 2026
He's Back! The Dos Equis Man -- The Most Interesting Man in the World -- RETURNS!
Here is another new one:
Friday, January 16, 2026
MIT Technology Review on Why AI LLMs are So Strange and So Alien
Until recently, I thought that the AI LLMs were just sort of fancy, souped-up search engines. Google on steroids. But then they started getting simple things wrong. And they seemed to understand that that our April 1 stories were just sarcasm. There seemed to be more to them than fancy search engines.
This MIT article explains what is going on with the LLMs.
https://www.technologyreview.com/2026/01/12/1129782/ai-large-language-models-biology-alien-autopsy/
What do you folks think of this?
Tuesday, January 13, 2026
Why is it that AI-provided electronic circuits often don't work in the real world?
Like many, I have turned to AI for circuit ideas. And like many, I have been surprised by how many of these ideas just don't work. I have found relatively simple circuits that don't work when built in the real world, and don't work when built in LTSpice. I have already described how AI failed when I asked it a simple question about how many 330 ohm resistors to put in parallel to get 50 ohms. Mike WU2D had found that a lot of AI provided circuits just don't work. (Go to the 10 minute point in his video. )
I was wondering why this is so. So... I asked AI! For those who are sure that their AI is smarter than my AI, let me specify: I just wrote the question into the Google search box and looked at the "AI Overview" in the response.
Here is what AI said:
AI-recommended circuits often fail in the real world due to gaps between simulation and reality, such as a lack of real-world data (noise, rare conditions), AI's inability to grasp complex physical nuances like heat dissipation or component aging, and poor integration with physical prototyping, leading to brittle designs that don't account for manufacturing tolerances or environmental stresses, despite being mathematically sound.
Key Reasons for Failure:
Data Limitations (Garbage-In, Garbage-Out): AI relies heavily on training data; if it's incomplete (missing extreme temperatures, noises, aging effects) or biased, the AI generates designs that work in simulation but not in messy real-world conditions.
- Brittleness & Lack of Context: AI struggles with "edge cases" or novel situations not in its training, leading to fragile designs, much like an AI failing to recognize a rotated bus. It lacks human intuition for subtle physical interactions.
- Physical Nuances Ignored: Simulations often miss crucial real-world physics like heat hotspots from component imperfections, electromagnetic interference, or subtle signal integrity issues, which become critical in physical prototypes.
- Manufacturing & Prototyping Gaps: AI designs might be theoretically optimal but impractical to build (e.g., impossible tolerances, complex layouts). The gap between virtual design and physical assembly (poor connections, wrong components) causes failures.
- Validation Challenges: AI-generated circuits need extensive, real-world testing (SPICE simulations, breadboarding, PCB builds) to catch issues, but AI can't perform physical troubleshooting like soldering a damping resistor or witnessing ground bounce in a lab.
- Probabilistic vs. Deterministic: AI works on probabilities, whereas electronics often need deterministic precision. A small error tolerable in some AI tasks can be catastrophic in sensitive circuits.
- Iterative Feedback Loops: Combining AI's speed with human expertise and physical testing to refine designs.
- Hybrid Approaches: Using AI for creative exploration but relying on established physics models (like SPICE) and human judgment for final validation.
- Focus on Integration: Ensuring AI tools work seamlessly with existing engineering workflows and physical constraints.
Saturday, January 10, 2026
SolderSmoke Homebrew Direct Conversion Receiver Hall of Fame Update: 108 Completed + 7 Honorable Mentions: Total Receivers Built: 115 (As of February 20, 2026, 1503Z)
Please let us know if you spot any errors, or if we have inadvertently missed anyone. Don't worry about being late to the game -- the challenge continues. All of the info is still available.
Friday, January 9, 2026
Artificial Intelligence Not So Intelligent! AI Flunks the Parallel Resistor Test!
So this morning I asked this of AI:
How should I make a 50 ohm dummy load capable of handling 5 watts from 330 ohm 1/4 watt resistors?'
Here was the answer:
Saturday, January 3, 2026
More on Spark Transmission and Reception -- From Germany. Spark Transmission using a Piezo Fire Starter
Friday, January 2, 2026
Spark Gaps and Coherers demonstrated and Measured by CuriousMarc
Thursday, January 1, 2026
Walter KA4KXX's Innovative 20-meter SolderSmoke Direct-Conversion Honorable-Mention Receiver
Let's Start the New Year with... THE KNACK!
Wednesday, December 31, 2025
Is the Veritasium Guy Retiring? Google says SolderSmoke is "Low Value Content."
I have been a fan for many years. His comments on the vile influence of the algorithm and AI are right on target.
Google recently informed me that the SolderSmoke blog has "Low Value Content." Well, consider the source!
I think Veritasium has made a good choice.
Three cheers for Veritasium!
Saturday, December 27, 2025
The Coastwatchers -- Their Rigs and Their Islands
AWA Teleradio 3BZ used by coastwatchers during the war Source: Australian War Memorial (P01035 .006)
Here is a great site about the AWA 3BZ Wireless set:
- Location: Uepi is situated in the Marovo Lagoon, part of the Solomon Islands, which were central to the brutal Pacific Campaign of WWII.
- Wreck Dives: The waters surrounding Uepi are a "treasure trove" of sunken WWII aircraft (like P39 Air Cobra, Japanese Zeroes) and shipwrecks, making it a prime destination for historical diving.
- Preservation: The Uepi Island Resort actively manages and promotes responsible diving at these sites, emphasizing that removing artifacts is illegal.
- Wickham Harbour: Located near Uepi, this area contains significant WWII wrecks, accessible via boat trips from the island.
- Aircraft: Divers can find Japanese Zeroes, American Corsair fighters, and potentially B24 bombers, often in challenging conditions, with efforts to move some to cleaner areas.
- Marovo Lagoon: As one of the world's largest saltwater lagoons, it holds numerous historical remnants from the intense fighting.
Thursday, December 25, 2025
Alexanderson Alternator on 17.2 kHz Copied by YO2DXE in Romania
On December 1st 1924, the 20kW Alexanderson Alternator with the call sign "SAQ" was put into commercial operation with telegram traffic from Sweden to the United States. 101 years later, the transmitter is the only remaining electro-mechanical transmitter from this era and is still in running condition. On Christmas Eve morning, Wednesday December 24th 2025, the transmitter is scheduled* to spread the traditional Christmas message to the whole World, on 17.2 kHz CW.
You can listen to the CW from Ciprian's setup above. I listened to it carefully and clearly heard the "KW ALTERNATOR" words at around the 3:30 mark in Ciprian's video. I wondered if this was in fact the SAQ Alternator (but then again, who else would be on 17.2 kHz on Christmas Eve?). I looked at the video from Sweden (below) at around the 49.37 mark we see the operator send "200 KW ALTERNATOR." Through Ciprian's video, I copied "KW ALTERNATOR." So Ciprian's operation was a success. Congratulations Ciprian!
Merry Christmas to all!