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Blogs and Websites and Groups
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SARC Bi-weekly Bulletin - January 22, 2025 Issued during the first and third week of each month, it provides a quick reference for member activities, resources and links for the ...
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Re: Aurora VBP-1 inverter - https://www.shopmetropolitanparts.com/p-289-positive-ground-solid-state-vibrator.aspx6 hours ago
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40m Pelican Case SSB Trabsceiver - *Test code for the LCD and Si5351* #include #include static const long bandStart = 7000000; // start of V...
22 hours ago -
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Notice: 145 MHz Activity Period for the UK & Ireland - Sun 26th Jan 2025 - The *145 Alive Group* are organising an activity period on the 2m amateur radio band in the UK & Ireland on *Sunday the 26th of January 2025* from 12:00 ...
1 day ago -
January 21, 2025. More Low Power Suggestions. - For starters, visit Todd's K7TFC website: https://www.mostlydiyrf.com and load up on the really good stuff. The reason I start with this is that Todd sent m...
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Part Obituaries continued : R.I.P -- dear J310 - Greetings ### I'm working on a common gate RF amp using the ubiquitous RF home brewer's JFET, the J310. I happened to go on DigiKey and Mouser. Here's w...
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Soldersmoke Direct Conversion Challenge - revisited - I built the direct conversion receiver described on the Soldersmoke blog a while back but ran in to several problems. The audio chain was very unstable and...
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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...1 week ago
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Charging LiFePO4 batteries from a vehicular electrical system - the problems and a solution. - *Figure 1:* The Renogy RNG-DCC1212-20 - an isolated and current-limited battery charger, intended for use with vehicle electrical systems. *Click on the im...
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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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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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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...9 years ago
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Courtesy Of F5VJD – A Working G4JST/G3WPO DSB80 80M DSB Transceiver! - As I’ve explained in earlier posts, my interest in the G4JST/G3WPO DSB80 rig goes back a long way – back to the mid 1980’s in England when I read the descr...12 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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On Page 39 of the Nov-Dec 2024 SARC newsletter "The Communicator"
interesting video but a strange comment about the Trident II travel time from Nevada - nuclear sub in Lake Tahoe? 🤔
ReplyDeleteJust hook your Tuna Tin 2 up to it and - bingo!
ReplyDeleteThis massive antenna has even made it into the movies. In the film Divergent (and it's two sequels) it is featured prominently as a CGI-transformed protective fence that completely encircles the post apocaliptic city of Chicago. I was watching this movie with my son when I spotted it and got all excited and started yelling "hey that's the Russian Woodpecker antenna array WTF!". Of course nobody knew what I was talking about until I showed them pictures of it on the web!
ReplyDelete