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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...
21 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...
1 day ago -
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...
3 days ago -
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...
3 days ago -
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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...
3 weeks ago -
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...
4 weeks ago -
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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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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...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 ...
4 months ago -
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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, ...
4 years ago -
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...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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SolderStats
Radio Inventor Stamps
On Page 39 of the Nov-Dec 2024 SARC newsletter "The Communicator"
Im sure he has enough of his programs recorded that they could keep playing them for 20 years and never repeat. He has risen!
ReplyDeleteIm sure he has enough of his programs recorded that they could keep playing them for 20 years and never repeat. He has risen!
ReplyDeleteApparently in 1999 he said "If the Lord God Almighty doesn't make a major move by the year 200 I'm gonna tell Him to go to Hell". Now he can finally ask Him why He didnt! Paul VK3HN.
ReplyDeleteBrother Stair was always 5-9 here in Texas.
ReplyDelete