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Blogs and Websites and Groups
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Linux Mint, QRP, & C / C++ Compilers - Greetings: On the bench I'm studying PLL techniques using a sample & hold detector + VHF circuitry. Currently, I've got nothing to post RF-wise. Another...
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Re: How to calculate the output impedance matching circuit of a balanced Class E amp - 12 MOSFETs... If you are going to run, say, 45V @ 12A (as an example), you could use something like 3.5uH to 4uH of inductance, and I would use a 1000pF va...13 hours ago
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Perfect Gift or Holiday Read: Tales of a Vagabond DXer by Don Moore - Last week, I had the pleasure of posting the latest installment of Don Moore’s “Photo Album” series on the SWLing Post. Don has contributed numerous Photo ...15 hours 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......
17 hours ago -
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December 11, 2024. We take things for granted. - We often take things for granted! You know, you snap on your homebrew rig or appliance box, and it comes alive. Or that if you want a fresh salad, there is...
20 hours ago -
Prototype 2el Yagi for 146MHz Fox Hunting – measurement - This article describes VK4MQ’s (Bruce) build of the antenna and documents measurement of the prototype two element Yagi for Fox Hunting / portable directio...20 hours ago
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From Competition to Communication: BBC World Service Explores Morse Code - Many thanks to David (K2WNW) and Pete Polanyk, who share this brilliant documentary from the BBC World Service: Morse code: Ready to transmit The Documenta...22 hours ago
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Partial Restoration of a Vintage Tube Radio – the Westinghouse H-130 - It’s not too often that I post about projects which are incomplete, but this one has reached a stage where, although I’m not sure if I will fully finish it...
6 days ago -
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MeSQUAREs alternative - 1/32" board - MeSQUAREs are excellent. I've purchased them from QRPme in the past and used them with great success. I get through them very quickly and find it a bit unf...
1 week ago -
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...
1 week ago -
HRWB 224 - 2024 Holiday Shopping Show - In this episode we give you the buyer's guide to holiday cheer. The team put their heads together to come up with many suggestions for the workbench, ha...1 week 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...3 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...5 weeks ago
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Your LF Station's Best Friend - The Scopematch PT.II - As mentioned in Part I, my construction of the MØBMU-designed Scopematch has proven to be the most valuable piece of test gear in my LF station. If you...
1 month ago -
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...2 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...2 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 ...
2 months ago -
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January 13, 2024. Just Technical Stuff Today. - https://n6qw.blogspot.com Our New Home!10 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 -
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 ...
5 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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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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- An Old but Cool DiFX: The Epiphyte
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- DiFX! My New NE602 Rig is On the Air
- VFO Tribal Design Wisdom from Joseph Carr K4IPV (SK)
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SolderStats
Radio Inventor Stamps
On Page 39 of the Nov-Dec 2024 SARC newsletter "The Communicator"
The "toroids.info" site does belong to Diz.
ReplyDeleteA lot of work has gone into this information. Well worth the 5 irons award.
ReplyDelete