No posts to blog this week -- we are in Sicily, near the Etna volcano.
Beautiful place. Will talk about this in next podcast. 73
Posts
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Blogs and Websites and Groups
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Lab Notebook: GPT-5 Help Agent for Ham Radio Exams Debug - Debug notes from getting the AI help feature of the free ham radio exams to work today. Grabbing a text answer from OpenAI still works: That's from ...
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Penicillin - In the first half of the 1940's penicillin became plentiful and cheap. RF is the reason why.7 hours ago
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Hey Contesters and Operators, a new Ten Tec SDR Radio on the horizon - As a member of the majority of the US ham population doing your thing with contests and operating you will need a serious radio. After what seems like a mi...
21 hours ago -
October “Bug-Out” Month: Quick Update - As promised, I’ve officially kicked off October as my “Bug-Out” month. Friday, I activated the Blue Ridge Parkway (US-3378) using my TR-45L, AX3, and Vibro...22 hours ago
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A Radio Postcard from Seoul - Many thanks to SWLing Post contributor Mark Hirst, who shares the following guest post: A Radio Postcard from Seoul by Mark Hirst I recently spent a very m...23 hours ago
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FreeDV net - good rollup, terrible conditions for local - This morning's South East Australian Sunday 10:30am FreeDV net on 7.177 had a good rollup of 15 stations, including several first timers, but conditions we...1 day ago
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HRWB 246 - Good After-Evening-Noon: Projects with Simon Wilton G7HCD/VA3SII - In this episode, we meet Simon Wilton, G7HCD / VA3SII, a prolific designer, tinkerer and ham radio operator. Simon describes some of his projects includ...1 week ago
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Improving conditions on 28 MHz at Equinox - Sept 2025 - Over the last few days, the conditions on the 28 MHz (10m) band have really improved as we approach the equinox. The map above shows the stations that I ...
2 weeks ago -
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“The Jingy 40” – A Two-Transistor Regen - Or “The One-Transistor Regen That Turned Into A Two-Transistor Regen” with thanks to G3XBM and N0WVA. About 10 years ago, Doug N0WVA told me about an impre...
2 weeks ago -
DXing distant SolarEdge PV optimizer modules (or long-distance propagation of PV system QRM) - From how far away can you hear the spurious emissions from a known-noisy PV system? *Quite a racket!* *Figure 1:* The spectrum of a SolarEdge PV system...
3 weeks ago -
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The Communicator September - October 2025 - *Back With a Fall Issue* This publication, "The Communicator" from Surrey Amateur Radio Communications (SARC), serves as a bi-monthly electronic periodical...
5 weeks ago -
W1WEF - Episode 530 - Jack Schuster - W1WEF In this episode of QSO Today, we sit down with Jack Schuster, W1WEF, whose amateur radio journey spans more than 73 yea...5 weeks ago
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The "George Batterson 1935 CW QSO Party" - Summary - The first *George Batterson CW QSO Party* has concluded and the results are in! The "*GB*" was introduced to honor George Batterson (W2GB), who along wi...
5 months ago -
KK4DAS MB 20 Transceiver Complete - The MB 20 transceiver is now complete. The rig is a homebrew 10-watt 20-meter SSB transceiver. The VFO module was an ebay purchase of a salvaged Yeasu...
5 months ago -
A Curious 9 MHz Crystal from Mouser Electronics - Just a quick post to share info about a good 9 MHz crystal sold by Mouser Electronics. I last purchased batches of crystals for xtal IF filters back in 2...
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40m Pelican Case SSB Transceiver - See YouTube channels for details: http://www.youtube.com/c/CharlieMorrisZL2CTM *Test code for the LCD and Si5351* #include ...
8 months ago -
Hollow-State Design, 3rd Edition - Hollow-State Design, 3rd Edition is available from: Lulu Press: tinyurl.com/hollowstatedesign3 eBay: search for “hollow-state design” Electric Radio bookst...11 months ago
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I Finally Bought My Dream Airplane - Aviation has been a love of mine since I was a very little person. Living in Nevada, seeing posters and ads for the Reno Air Races, specifically the Texa...11 months ago
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Landscapes - %BLOGLNK% Landscapes The post Landscapes appeared first on 28° North Sailing.1 year ago
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Daylight Again – An all Analog Radio - What’s all this? In 10 seconds, A high performance, 7MHz, 5 watt SSB rig Draws just 24 mA of current 90 dB dynamic range, 80 dB close-in dynamic range 3D ...3 years ago
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New post: A “Walkie-Talkie” SSB transceiver for 14MHz or the higher RF bands - To access this article, please click link: A “Walkie-Talkie” SSB transceiver for 14MHz or higher rf bands3 years ago
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Other Electronic Projects • Re: Can I normalize both Mono Amp Outputs? - radm49 wrote: ↑ Mon Apr 25, 2022 3:56 am qmavam wrote: ↑ Thu Apr 21, 2022 8:57 pm Yes, you can use a wall wart for power, you might need to add a capacit...3 years ago
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A battery powered 50W 160m AM transceiver for your backpack - This project is a compact 160m AM transceiver capable of up to 50 watts of fuly modulated carrier, designed for portable use. The transmitter portion uses...4 years ago
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Modifications to the Dayton/FDIM-2019 Antuino - The Dayton Antuino has sub-optimal performance. This is a short note on improving it to an 80 db range of measurements. The trouble with Antuino 2.0 (the o...6 years ago
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Raduino as NBFM TX - Here is a neat, 30 minute hack for your Raduino to turn the Si5351 into a pretty stable, solid NBFM transmitter. The hack is to add a varactor diode in ...
7 years ago -
QRP Labs shop! - [image: Shop] All QRP Labs kits may be ordered online securely at the shop, with PayPal payment. *Click here to visit the shop!* *Click!* *Shop! Order...10 years ago
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Hans Summers Homebrew Radio, Electronics and Computing - Radio, Electronics and Computing Projects by Hans Summers I make no claims for technical accuracy, good design, or necessarily even originality for the co...16 years ago
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E. Howard Armstrong on a Czech Stamp
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- Crossing a small bit of the pond...
- WSPRing along at 27 db below the noise....
- Are Diode Ring Mixers Fundamentally Different?
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- In Sicily
- SolderSmoke Podcast #105
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- 2N35s, 1955... and some inspiration from AA1TJ
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On Page 39 of the Nov-Dec 2024 SARC newsletter "The Communicator"
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