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Thursday, March 19, 2009
Homebrew Solar Panels from Donuts and Tea!!!!
So all you appliance ops out there using STORE BOUGHT commercial solar panels should hang your heads in shame!
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So all you appliance ops out there using STORE BOUGHT commercial solar panels should hang your heads in shame!
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Blogs and Websites and Groups
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Local ham catchup including Peter, VK3YE - Yesterday, in a Melbourne park, I had the pleasure of a catch up with a bunch of old friends. Ham Radio Home brew hero, Peter, VK3YE, was there and of cour...
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December 22, 2024. So how do you turn a Direct Conversion Receiver into a Transceiver? - Friends and colleagues, Bill, N2CQR and Dean, KK4DAS, developed a Direct Conversion Receiver project that was featured in "hackaday" and the subject of a l...
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Cape Lookout Activation: A Family Adventure and Saltwater Experiment - Last Sunday, my family set out on a trip across North Carolina, from the mountains to the coast. Our destination was Beaufort, a charming coastal town I ha...10 hours ago
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Perplexity AI calculating Zo of a two wire transmission line – comparison with measurement – updated - During the process of writing the article Analysis of output matching of a certain 25W 144MHz PA an estimate was made of the characteristic impedance Zo of...23 hours ago
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Re: Receiver Mica Disease - You might be seeing the effects of bad silver-mica capacitors. Apparently silver can migrate thru the mica insulation forming little fingers (dendrites) wh...1 day ago
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WI2XLQ: Brian Justin’s annual longwave broadcast starting Christmas Eve and New Year’s Eve - Many thanks to SWLing Post contributor Brian (WA1ZMS), who writes: What has now become an annual LF listening event, WI2XLQ (an FCC Experimental Callsign) ...2 days ago
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HRWB 225 - QRP Radio Design with Jonathan KM4CFT - In this episode we meet Jonathan Kayne, KM4CFT, the designer of a very popular new QRP radio called the CFT-1. Jonathan shares his journey from concept ...5 days ago
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6474km TEP contact on 144 MHz from Argentina to a ship off the coast of Florida - 9th Dec 2024 - Over the last few years, I've reported on many *Trans-Equatorial Propagation* (TEP) contacts from South America to the Caribbean on the *144 MHz* band......
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Frequency response of the RX-888 SDR at the high and low ends (above 30 MHz and below 1.5 MHz) - *Figure 1:* The RX-888 Mk2. The RX-888 Mk 2 *(hereafter referred to as the RX-888 or '888) *is a versatile device, essentially providing a means by which...
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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...5 weeks ago
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The November - December 2024 SARC Communicator - *Another BIG issue* The final issue of the year. The November-December Communicator, digital periodical of Surrey Amateur Radio Communications is now avail...1 month 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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40m SSB Tramping Rig - Please see my YouTube channel for details of the build. http://www.youtube.com/c/CharlieMorrisZL2CTM *2N3904 Antenna Amplifier (initial)* Voltage gain is ...
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The SW200 – A Budget AM Broadcast Processor for LPAM – and Hams Too? - Note that although the audio processor described in this article is intended primarily for Part 15 AM broadcasters, and perhaps also low power licensed AM ...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 ...
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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"
Nice find OM. I can hear it already a donut/tea powered QRSS beacon!
ReplyDeleteHow about a throwdown with lemon cells in one corner and donuts in the other?
Let us know if you give donut solar a try.
Matt: I'm afraid I'm a bit of an appliance op on solar power. But Billy and I are now building a windmill from a kit. 73 Bill
ReplyDeleteAlways be prepared to obtain an expert advice if you feel that you are ready to invest on more solar panels.
ReplyDeleteSolar Panels