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Blogs and Websites and Groups
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AI and Amateur radio presentation - This weekend I gave a talk to the Macedon Ranges Amateur Radio Club about how at least one dimension of Artificial Intelligence, Machine Learning, is start...
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Radio Farda is back on the air as of June 20, 2025 - Many thanks to SWLing Post contributor, Paul Walker, who writes: From Jean-Michel Aubier on WOR list: Radio Farda is back on shortwave since June 20, 2025:...6 hours ago
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Trip to Apex Surplus - Disorganized Mayhem! But I loved it. You had an array of resistors on the same shelf as O Rings. Nothing is priced and while shopping boxes were provided, ...20 hours ago
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Re: What's with the 'Knurled" electrical conduit? - I've never seen it. At least anywhere it was pointed out. From the page you posted I dont see anything about knurls inside. That's a datasheet for standa...22 hours ago
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Putting the New Radioddity HF-009 Portable Vertical Antenna on the Air — QRP Style! - by Thomas (K4SWL) The day before I left on my week-long FDIM/Hamvention trip, I received a package in the mail from Radioddity containing their soon-to-be-...1 day ago
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Unique broadcast from WA2XMN on 42.8 MHz on the 19th of June 2025 - While we are all familiar with the 88 to 108 MHz FM broadcast band today, its origins can be traced back to 1936 with the very first experimental station...
3 days ago -
A Crystal Set with No External Antenna - In the previous post, I described my recent build of a very simple little TRF receiver for the AM broadcast band. It happened as the result of a month or t...
4 days ago -
HRWB 239 - Radio Mobile Path Prediction Software with Roger Coude VE2DBE - In this episode we meet Roger Coude, VE2DBE, the author of Radio Mobile. This amazing software package allows the user to create a cross sectional plot ...4 days ago
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A 15 (and 10) meter high-pass filter for Field Day - *QRM from a transmitter to receivers on lower bands* A friend of mine belongs to a club in a town north of me and he was describing an issue that they'v...
1 week ago -
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File this under Property Tax Assessment District Ghost Stories - So, this is kinda cool and kinda fun! Found this ghost story all about property taxes, assessment districts, Japan, and AI via Maggie Appleton. Ghost ...
1 week ago -
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AB4WS - Episode 525 - Jack Prindle - AB4WS Jack Prindle AB4WS, had an early interest in AM broadcast radio, evolving to scanner listening to public safety in his n...1 month 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...
1 month 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...
1 month ago -
The Communicator May-June 2025 - *Another full issue* Its a big issue, and great articles, along with our regular columnists. Now read in over 165 countries, this issue brings you 120+ pag...
1 month 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...
3 months ago -
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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 ...
5 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...8 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...8 months ago
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Landscapes - %BLOGLNK% Landscapes The post Landscapes appeared first on 28° North Sailing.9 months 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 ...2 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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Digi-chirp! Digital synthesis of ‘nostalgic’ CW - The bottom ends of 80, 40 and 20m are not what they used to be. For starters, the busiest part is the digital segment where computers talk to computers – l...3 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...5 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
Blog Archive
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- Yellow Fever! The Cold War Origins of Juliello
- SolderSmoke Podcast #198 - D-104, HW-8, Juliello, ...
- Ralph Baer -- Video Game Inventor
- KC8WBK's Cakepan BITX40
- Einstein's Knack (for Refrigeration)
- Intuitive Repair of a Sony Shortwave Portable
- K.P.S. Kang's Minimalist VXOs (and one for the BITX)
- NYC's Radio Row Survives (sort of) in the Bronx
- Excellent Description of the Electret Microphone
- Dino's FB W1FB Crystal Tester
- And Now For Something Completely Different: 70cm FM
- Have You Ever Seen What's Inside a D-104 Crystal E...
- Stop Me Before I Commit an Electronic Atrocity!
- Steve N8NM Gets Modular -- With Both Hardware and ...
- Another LM373 Rig - Pete Is Not Alone!
- The Radio Laboratory at Bandung, Java -- SSB in 1927
- AC9JQ's Mini Digi VFO/BFO Al Fresco with OLED (and...
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SolderStats
Radio Inventor Stamps
On Page 39 of the Nov-Dec 2024 SARC newsletter "The Communicator"
Absorption refrigerators are still used in motorhomes.
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