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Wednesday, June 20, 2018
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Blogs and Websites and Groups
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Re: 24 MOSFET class E 80 160 transmitter build looking for Elmer to help - Okay, I did not look you up - where are you located? There are three parts to the build - parts - the custom chassis work - the labor The 4th one, cost. ...9 hours ago
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February 4, 2025. A terrible situation that has arrived. - A ham who occasionally emails me shared a story from Sunday. It seems like prior to going to church, he was eyeballing an electronic goodie that could be h...
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Operation Manna 80 - A very special, special event station SARC has been asked to participate in a large-scale special event late in April commemorating the relief efforts of t...
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FOSDEM 2025 in Brussels -- HAMNET, M17 & MESHTASTIC presentations - *FOSDEM* is a free event for software developers from all over Europe to meet, share ideas and collaborate and it held this year in Brussels on the 1st &...
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Transistor Radio Series -- KO4BB Frequency Doubler -- 3.5X to 7.X MHz - Greetings ### I continued to seek a frequency doubler - and started experimenting with emitter-coupled pairs to make the full-wave rectifier. After seve...
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A short-term "UPS" for mini (NUC-type) PCs - *The problem* *Figure 1:* A "Beelink" small form-factor PC. This unit sports a Ryzen processor and runs from an external 19 volt supply. *Click on the i...
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40m Pelican Case SSB Trabsceiver - See YouTube channels for details: http://www.youtube.com/c/CharlieMorrisZL2CTM *Test code for the LCD and Si5351* #include ...
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NanoVNA-H4 – Surely Smith is better? – #2 - NanoVNA-H4 – Surely Smith is better? discussed a correspondents contention that “surely a Smith chart is superior for antenna system tuning, a universal di...2 weeks ago
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Finding Your Best Crystal Radio 'DX Diode' (Part 2) - Readers may recall my summertime blog, "*Finding Your Best Crystal Radio ‘DX Diode'*". It described a theoretical method I tried in order to see which o...
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WA2JMG - Episode 524 - Charles “Pete” Corp - WA2JMG Charles “Pete” Corp, WA2JMG, operates simple rigs into wire antennas, using low power. His primary operating mo...2 months ago
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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...3 months ago
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2000 47pF Caps ... - An unexpectged package arrive in the mail today. Did you ever wonder what 2000 47pF NP0 capacitors look like? Thanks to John, AB2XT I will never run ...
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New QRP Cluster From OM0ET and OM6APN - By DX EXPLORER DX EXPLORER Paul OM0ET and Peter OM6APN recently launched a new cluster dedicated to QRP operations. Have a look and I hope you will enjoy...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 ...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 bands2 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...2 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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SMA Torque Wrench for the NanoVNA (uncalibrated) - I have been using SMA connectors on most of my projects, and have occasionaly gotten a slightly different reading than I had expected. Using the NanoVNA, ...
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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 -
A Scratch-Build of N6KR and Wilderness Radio’s SST for 20M - Note – all links in this post open in a new browser window. Many thanks to Zach N0ZGO, for providing updated links. I have edited this article to reflect t...8 years ago
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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...9 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...15 years ago
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E. Howard Armstrong on a Czech Stamp
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Radio Inventor Stamps
On Page 39 of the Nov-Dec 2024 SARC newsletter "The Communicator"
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