For some nice offers on parts of interest to QRPers and Knack victims in general, check out the website of Diz, W8DIZ.
http://kitsandparts.com/
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Blogs and Websites and Groups
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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 VFO r...
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SARC Bi-weekly Bulletin - January 21, 2025 Issued during the first and third week of each month, it provides a quick reference for member activities, resources and links for the f...10 hours ago
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Re: Johnson Viking 500 Power Supply/ Separated units? - Your output numbers seem the opposite of what they should be in that the operate output should be greater than the tune output value. Just checked out a ...11 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 ...
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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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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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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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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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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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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 ...
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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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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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E. Howard Armstrong on a Czech Stamp
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Radio Inventor Stamps
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