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4 hours ago
Friday, February 10, 2017
Falling for the SDR Waterfall...
This is going against everything I believe in, but I admit it -- I want one of these.
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This is going against everything I believe in, but I admit it -- I want one of these.
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Blogs and Websites and Groups
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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...4 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...17 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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Tech news spot on ABC Radio - Nightlife Tech Guru Peter Marks, a software developer and technology commentator from Access Informatics, joined Philip Clark on Nightlife to discuss the l...
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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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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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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
Blog Archive
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2017
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February
(22)
- VE7SL and THE POWER OF THE GREEN GLOW
- CONFIRMED: Andy G6LBQ Has The Knack (and OTD)
- G0ETP's Amazingly Beautiful SDR Rig
- More DSB, from Belgium and Spain
- Walter KA4KXX's "Al Fresco" Oz DSB rig with VFO Mod
- HB2HB: Contact on 40 meters with W0PWE
- VU2XE's BITX40 (with a cool CAD box)
- Peter Parker VK3YE on Vintage Gear (in his new book!)
- Back from the Raspberry Pi SDR Brink
- New Posts to BITX HACKS
- Ken G4IIB's BITX Journey
- VK4FFAB's FB Intro to LTSPICE
- Falling for the SDR Waterfall...
- VK2EMU's Biscuit-Tin Direct Conversion Receiver
- VK3YE's GREAT "QRP by the Bay" Event
- ZL1UEM'S Tiny OLED Si5351 Arduino VFO
- Schematic for the RTL SDR Dongle Front End
- Adding a Homebrew Front End to an RTL-SDR HDSDR Re...
- "First Light" on Brad's Direct Conversion Receiver
- W8LM's BITX on a Board
- A Mighty Mite, a BITX40, an ILER, some Arduinos, a...
- Colin M1BUU Achieves SOTA "Mountain Goat" Status -...
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▼
February
(22)
SolderStats
Radio Inventor Stamps
On Page 39 of the Nov-Dec 2024 SARC newsletter "The Communicator"
Come over the graphical side!
ReplyDeleteRandy, K7AGE
You're not alone, Bill!
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