Saturday, October 31, 2026

More Clandestine Spy Radios -- Soviet Spies in Japan during WWII -- Spies On The Air! Please Comment!

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Sorge I may have been too quick to dismiss the possibility that Soviet spies built their own radios.  Maybe they did, but with a radio speci...
4 comments:
Wednesday, October 21, 2026

Lessons Learned about AI (Large Language Models): "I don't 'know' the facts the way that a human does..." Let's do an experiment...

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Yesterday, as I struggled with a Large Language Model that at first gave good advice (how to build a 5 crystal filter) and then really bad a...
15 comments:
Tuesday, October 20, 2026

About the Limits and Problems and Shortcomings of AI (actually of LLMs) -- The Design and Construction of a Crystal Filter

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Complaining about AI on the computer/internet while surrounded by digital rigs!   A couple of days ago, I described in this blog how AI (spe...
18 comments:

Charlie ZL2CTM Talks Homebrew with NJ7V on Red Summit RF

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  https://www.youtube.com/watch?v=xV489xbf34I NJ7V has a good interview with famed NZ homebrewer Charlie Morris ZL2CTM.  Charlie describes h...
1 comment:
Monday, October 19, 2026

Using AI to Design Crystal Filters -- Please comment, especially on the use of AI

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  Earlier, AI told me that for 17 meters with a VFO in the 5.2 MHz range, and and a BFO/Carrier oscillator at 13 MHz I should not have any s...
10 comments:
Sunday, October 18, 2026

Waves? Particles? Understanding Quantum Mechanics with Jim Al-Khalili

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I recently pointed out that understanding has its limits:  We all USE quantum mechanics, for example, (like, now) but we do not really under...
Saturday, October 17, 2026

Wow! Jomon VU3IZD's Homebrew Modular BITX 40 Transceiver

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  I really liked Jomon's rig.  The modular approach is brilliant as is his explanation of how each stage works.   He emphasizes the bene...
7 comments:
Friday, October 16, 2026

Spies On The Air? Israel's Spy in Syria: Eli Cohen and HF CW in the 1960s -- Cohen's Antenna and Thermatron QRP Transmitter

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  Eli Cohen in 1959 This week I watched the Netflix show about the Israeli intelligence agent Eli Cohen:    https://www.netflix.com/title/80...
9 comments: