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Odds and ends

I managed to get outside for just a few minutes yesterday as the moon was approaching maximum coverage of of the sun (90%) at 3:24 PM local time.Β  I took a small shipping box and punched a hole in the side with a thumbtack. It projected a very tiny, but totally sharp image of the moon covering the sun revealing only a small crescent of sunlight. Of course, this is New Jersey after all, and clouds came in for the actual moment of maximum eclipse. But I can say I saw it. This reminded me of the eclipse of 1972, when I had my 3" refractor telescope set up in the backyard, projecting a magnified image onto a white piece of cardboard.

A co-worker managed to snap this with his iPhone.

BTW, Sean Kutzko KX9X was doing some AM Broadcast Band DXing during the eclipse. He observed that during the maximum period of darkening at his QTH, he was able to hear AM stations from over 500 miles away, that he normally can only hear at night. The D Layer was definitely affected! He recorded the AM Band during the eclipse from start to finish and will go over it in detail over the next few weeks, in order to get a better feel as to how propagation was affected.

I saw on Facebook yesterday, where Alex PY1AHD of AlexLoop fame has become a Silent Key:

It is with extreme sadness and sorrow that I share the passing of our friend and colleague Alex Grimberg (PY1AHD), AlexLoop, due to his renowned work with magnetic loop antennas. Inestimable loss for Brazilian amateur radio, an enterprising and visionary colleague - We are all saddened.

I got word from my friend that he was encouraged by your comments regarding using a local WebSDR as a receiver. He was able to hear stations on 20 Meters via the Web that he was not able to hear on his K3, due to the solar panel noise. He made three successful QSOs on 20 Meters and will most likely use WebSDR for making contacts on 14 MHz and above. Thanks for your encouragement! I'm very happy for him - he had been disappointed (that's putting it mildly) with his situation. It's good to know he can be on the air again.

My KM4CMT EFRW UNUN kit was delivered yesterday. I hope to have it built and ready to go for "Amateur Radio Day At The Library" on April 20th. If I don't have it ready, I'll probably employ the PAR ENDFEDZ or perhaps the EARCHI EFRW that I already have in the backpack. It's not that the kit is a complicated build - far from it. It's a matter of finding time. The next few weekends are really filled up now that lawn mowing season has started up again.

72 de Larry W2LJ

QRP - When you care to send the very least!

Another resource - QRP Builder

If you haven't heard about it, Ken WA4MNT has a great website QRPBuilder.com. He offers some neat items in kit form. One that has me especially intrigued is his QX1 antenna, which is an alternative to Elecraft's AX1 and AX2 antennas. I'm going to paste in Ken's description of the antenna:

The QX1 Antenna kit, is a small, ultra portable vertical 40m, 20-10m antenna with a male BNC connector and telescoping whip, rated at 20W. It is resonant on the whole 40m band with only a whip length adjustment. With a tuner, can be used on the 20m through 10m.

All the holes are pre-drilled and tapped. Assembly requires winding the coil, a little soldering, and some mechanical assembly. The tools required for assembly are a Phillips screwdriver, forceps or needle nosed pliers, wire cutters, soldering iron, and some rosin core solder. Depending on your experience, it can be assembled in about an hour. On a difficulty scale of 1 to 5, 5 being the most difficult, this is rated at 2.

The BNC Antenna Mount/Adapter kit is a versatile antenna mount with a nylon clamp included. This design allows small BNC terminated antennas to not mount on the output connector of the radio, but rather, with coax, to a more advantageous position. It is ideal for quick setup, field and SOTA operation. We have listed this as a separate kit because, some users already have an antenna like the Elecraft AX-1, MFJ-18xxT series, or similar homebrew antennas that are terminated with a male BNC connector. The strong clamp permits mounting to a apartment or patio railing, picnic table, or even a tree branch. There is a connection point for radials or a counterpoise with captive stainless steel hardware.

Assembly is easy and only the most common tools are needed and a 1/4β€³ drill. On a difficulty scale of 1 to 5, 5 being the most difficult, this is rated at 1.



I like my AX1, but I sure wish this had come out a few months ago. It's a much more affordable alternative, and with inflation the way it is nowadays, who doesn't need to stretch their $$$ as far as they can?

In addition to this nifty kit, Ken offers paddles, an audio amplifier kit and even a kit that will allow you to use normal earbuds/earphones on a crystal radio. Again, I'm not affiliated with QRP Builder in any way, shape, fashion or form; but when I see a site that offers items that I think you folks may be interested in, I'll showcase them here.

72 de Larry W2LJ

QRP - When you care to send the very least!

Seems I'm always late to the dance!

I'll see something that is "new" to me - only to see that it has been thoroughly reviewed and talked about by Tom K4SWL, Alan W2AEW and Mike K8MRD. This one has me enthused though, and you have all probably heard about it by now.Β  But if you're like me and you've missed the bus, here's an antenna solution that has me pumped up. The KM4CFT EFHW and EFRW.


Tom wrote it up on his excellent blog here -Β https://qrper.com/2023/11/tiny-efhw-and-efrw-kits-by-km4cft/

If you go on YouTube and search on KM4CFT, there are numerous videos about this antenna. Watching Mike's video shows how easy it is to build and use. I love antennas like this that are simple and are fast and easy to deploy. When you get to a park, POTA or just your local round-the block park, you want to operate and not waste precious minutes getting your aerial ready to go.

Remember the old Lays potato chips - "Betcha can't eat just one!"? Antennas are just like that - "Betcha can't have just one!"Β  Whenever SPARC holds an on-the-air event and the subject of antennas comes up, I always hear "Don't worry! Larry and Dave (KD2FSI) have everything we'll need." I'll be ordering one of these from eBay really soon to add to my antenna arsenal.

72 de Larry W2LJ

QRP - When you care to send the very least!

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