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Blogs and Websites and Groups
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Fabricating two Band Pass Filters for the 20M Hybrid Wireless - In the development of the original 40M Wireless, I purposefully used two separate Band Pass Filters. The original Swan 120, which was the template for the ...
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KPH Crypto Transmission on August 30, 2025 at 20:00 UTC - Many thanks to SWLing Post contributor Paul Jamet, who notes that the Maritime Radio Historical Society is hosting another Crypto Transmission from KPH on ...21 hours ago
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A chat about FreeDV with Ben from Amateur Radio Channel - Last week I had a chat with Ben, VK3TBS, from the popular Amateur Radio Channel YouTube channel. He's put what I said together with some illustrations of t...
1 day ago -
KN2M: Spiderbeam Fiberglass Pole Seaside Mount Prototype - by Dave (KN2M) Knowing that proximity to salt water offers great advantages to communications via the Brewster Angle, I looked for a simple way to operate ...1 day ago
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RockMite Sidetone Spectrum: Why That QRP Beep Sounds So Square - One of the first things I realized about my RockMite, (the tranciever at the heart of Project TouCans, our low power, Morse code only, ham radio), is t...2 days ago
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A Near-Minty Vintage Headset and a Book on Building the “Ultimate Regen” - No new construction projects here, I’m afraid, and none planned for the foreseeable future, though I have made some exciting and worthy acquisitions. A cou...
3 days ago -
N0LX - Episode 529 - Jake Groenhof - N0LX Jake Groenhof, N0LX, discovered amateur radio in the 1960s thanks to his uncle’s impressive home station and his father’...4 days ago
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10m QRSS Challenge: - DL3PB in Germany - 12th August 2025 - Since the start of 2024, I've been trying to see how many *QRSS* signals I could capture on the *28 MHz* band. The QRSS signals are just below the WSPR ...
6 days ago -
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HRWB 243 - Building Go Kits with Vince VE6LK - In this episode, our very own Vince, VE6LK, walks us through the process of figuring out how to build your go kit. Whether your are building a kit for m...1 week ago
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Reducing RF susceptibility for the HamGadgets "Ultra Pico Keyer" - and mimizing RF issues on portable HF stations in general - *Note: * While this article describes a modification of the Pico Keyer to reduce RF susceptibility, it also talks about methods to minimize/reduce RFI-re...
3 weeks ago -
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The Communicator July - August 2025 - *A Big One to Last the Summer* We're coming up to our club's 50th Anniversary and this is another big issue, with a look back at our history, great article...
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...
3 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...
3 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...
4 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 ...
6 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...10 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...10 months ago
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Landscapes - %BLOGLNK% Landscapes The post Landscapes appeared first on 28° North Sailing.11 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 ...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...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...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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SolderStats
Radio Inventor Stamps
On Page 39 of the Nov-Dec 2024 SARC newsletter "The Communicator"
Ignoring the competition, those MRF101AN are exceptionally good on paper. Only $20 each, actually available in reasonable quantities, can kick out 100W, can survive a 65:1 mismatch, 21dB power gain (1W in 115W out), the tab is the source pin.
ReplyDeleteAdd a cheap SMPS module to get 48V out and you have a whole world of possibilities opening up for not much money.