Solar activity did a rebound this week, back to more active levels.Average daily sunspot number increased from 36.6 to 65.4.Average daily 10.7 cm solar flux rose from 95.7 to 111.9.Solar wind caused geomagnetic numbers to rise, with average planetary A index going from 7.7 to 14.4, and middle latitude numbers from 8.6 to 12.1.An improved outlook shows solar flux over the next month peaking at 1... [...]
This year's 10th Youngsters on the Air Summer Camp is taking place in Karlovac, Croatia, August 6 - 13, 2022. Attending from the Americas is Mily Erazo, YS1YXI, from El Salvador, along with her father, Juan Erazo, YS1JFE, who is participating as a team leader. Participants are publishing a daily blog from the camp: www.ham-yota.com/yota2022. [...]
Two major ham radio events in August will host Division Conventions for ARRL The National Association for Amateur Radio®. On August 20 - 21, the Huntsville Hamfest will be the host of the ARRL Southeastern Division Convention at the Von Braun Center in Huntsville, Alabama. On August 26 - 28, the Northeast HamXposition will host the combined ARRL New England and Hudson Division Conventions at th... [...]
MFJ Enterprises, an amateur radio electronics manufacturer and retailer, will celebrate 50 years in business this October. Martin Jue, K5FLU, founded the company in 1972 after building a CW filter kit that sold for less than $10. Since 1990 the company has made five acquisitions, including Hy-Gain and Cushcraft antennas.MFJ Customer Services and Public Relations Manager Richard Stubbs says the ... [...]
For new memberships: Once payment is received you will receive a membership application by email. Please fill out this application fully and send it back either by email or to the address listed on the application. At the next board meeting your application will be reviewed and if approved you will be notified of the approval and become a full member. If for some reason the board does not approve your application you will be notified and a refund will be processed thru PayPal to your original method of payment. Should you have any questions about this please contact AJ4LJ@ARRL.net for more information.
When I built the VE7BPO DC Receiver Mainframe recently, it wasn’t intended to end up as a final finished project. The intention was more to have it as part of an experimental platform. The little box that contains the DBM, diplexer, and AF amplifier that make up the mainframe will most likely stay largely the […] [...]
This is one of those projects that has been residing in my head for a long time, as something I wanted to build. I’ve always liked direct conversion receivers. With them, as with regens, I felt that they have been underestimated by many builders and hams as being novelty items. Their apparent simplicity can also […] [...]
Please note that the above photo is of my SW200, though Rod’s no doubt looks exactly the same. A few months back, I received this note from Rod KQ6F – Hi Dave – I very much enjoyed your review on this product. It was largely the reason I bought one. My application is AM […] [...]
In this post from May of last year, I detailed the construction of a 1mW solar-powered HiFER beacon. I named it the Boris Beacon, in tribute to my neighbor’s cat. The beacon was never mounted permanently outside. I kept it indoors, powered from a small solar panel in the window, and feeding an “antenna” of […] [...]
This will be a very brief post, and in no way constitutes a review. It’s barely even an “initial impressions” type of post. It’s just that I’ve been wanting a C Crane Skywave SSB for a while now, recently purchased one, and wanted to tell you! I’m sure many readers will identify with the search […] [...]
Back in May of this year, Sheldon N6JJA began sending me information and details of his version of N1BYT’s WBR regenerative receiver. It went through several iterations, before ending up at the final version as shown here. Even this version is still a work in progress – as all good products of experimentation are. Sheldon […] [...]
To many, this will be just another Si5351 VFO project, with nothing to distinguish it from the others. In fact, that’s exactly what it is. The “how to” of connecting an Arduino board to an Si5351 board, wiring up a display, and loading the firmware, is straightforward, and well established. To me though, it was […] [...]
My build of the K7TMG HF Morse Code Thermometer was fun, and it inspired me to use the same circuit to create a new HiFER beacon to honor my neighbor’s cat Boris. With some of my indoor cat-owning neighbors in the past, I have acted as caretaker when their parents are out of town or […] [...]
This was a fun little project – and it gave me an idea for a future one. Sometimes, I find that the more complex undertakings, which require more planning, can get to the point that they “take me over” somewhat. At that point, for me, some of the fun starts getting squeezed out and that, […] [...]
Note – lots of photos, so please allow time for them to load! In a previous offering, I posted a few photos and a brief description of a QCX 5W CW transceiver from QRP Labs that I recently assembled for Fred, a ham friend. It was fun, because I got to assemble and experience first-hand, […] [...]
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