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Hi everyone, As you may know, I'm giving a talk on SOTA/POTA/QRP operating at our April 1 club meeting, and I'm wondering if there are others in the club that have done a bit of SOTA/POTA. If yes,

I periodically search the web for good information on using a hairpin match to tune a Yagi antenna. Almost all the articles I can find are vague, stating the same advice to just fiddle with it until

https://www.ndtv.com/feature/huge-piece-of-sun-breaks-off-scientists-stunned-3769985 "A huge part of the Sun broke off of its surface and created a tornado-like swirl around its North Pole. Though

Thanks for sharing--I didn't know that either! I wonder what effect (if any) it will have on propagation here on Earth. 73, Mark

I've been doing some research into ChatGPT as a part of my day job, and after the last club meeting I decided to give it a whirl using some ham radio concepts. If you haven't checked it out yet,

Just for fun, I pasted your entire message into ChatGPT. Here's the answer it came back with....pretty interesting! ------- A hairpin match, also known as a hairpin coil, is used to match the

Well, maybe I'm a little flattered that it agrees with me. :P I was hoping for at least a little more on "distance between the two legs". But I think that actually changes the stray capacitance,

Testing out the image posting capability here - inspired by Mark's mention of the Airboss launcher, on his blog. Built in the spirit of my personal philosophy: "Nothing exceeds like excess!"

Holy smokes! That looks like it could leap tall buildings in a single bound! Very nice! -- --------------------- Mark Ehr | K0EHR VP, 285 Tech Connect Radio Club Littleton,

Jed. I’m calling you if there is a need to take out a rogue high altitude spy balloon. That looks potent! Tony. K0mcw NA0TC program coordinator

Julian - OH8STN, is taking a new tack on his man-portable antenna preferences. He's prioritizing light weight and simplicity over ruggedness, while not giving up weather resistance. One interesting

I haven't done an altitude test. Really don't want to get in trouble with the FAA.:)

I haven't seen anything more about it. Possibly, yet another case of headlines over-stating the significance of something. Also, according to Forbes, it wasn't the JWST. So, not a flare or CME, I

You're right, Jed. ?It's media hysteria. ?Here's an explanation from a guy who watches solar activity every day. ?https://youtu.be/9ZJGBs6RPiM

Thanks Jed; Julian has a great set of videos and blogs. Like Julian, I've gone through many iterations on "man-portable" antennas. I was delighted to see that he is recommending the N9SAB OCFD

For those of you interested in home brew antennas, I just posted a blog about a 2 meter Moxon antenna that I built in 2021 that performed amazingly well and cost about $20 (probably more like $25-$30

Ah, the 3D printer! I've seen designs for a folded Yagi. IIRC, the driven element and reflector were held in alignment using shrink tubing. I don't recall how the director was kept from swinging

Hi all, A reminder that this Sunday is the Aurora Repeater Association / Rocky Mtn Ham "Swapfest", which will be held at the Adams County Fairgrounds in Henderson, which is near Brighton. The event

Hi all, as an update, I have acquired a second table, right next to the club table, for the purposes of selling stuff. Any club members are welcome to share the table, if you'd like to bring some

I wondered this myself...looks like there is strong evidence this may have been the case. Per an article on the Ham Radio Prep website: "A balloon launched by an Illinois ham radio club might have