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@mcdanlj@social.makerforums.info
2025-06-01 02:25:20

Baby's first unun!
My #AmateurRadio journey continues with making some of my own equipment...
I wanted to be able to connect either an EFHW or an EFRW to my KX3, but move the actual antenna away from the radio, so that I can POTA with other people close enough to talk, while keeping the antennas for the different out of each others' near field so they don't interere. To …

Partially-assembled unun. A nut on the upper right is connected to the coax shield, and is connected to a brass screw on the right for a counterpoise connection. A blue 100pf capacitor is in the upper left of a purple 3d-printed box, connected between ground and the center terminal of the input. At the bottom, the 6th turn is tapped and run to another brass screw which provides the 9:1 random wire connection. A strand of red magnet wire goes up to the upper left over the blue capacitor; it conn…
The internals of the unun with kapton tape covering the torroid, and the 49:1 antenna connection brass screw in the lid at the upper left.
The assembled unun with two wires attached. At the top is a wire next to a ground symbol on the side of the 3d-printed box. This wire is the counterpoise. On the lower right is another wire connected to the side of the box. This is the random wire connected to the 9:1 antenna connection. At the lower left, in the middle of the lid, is the antenna connection for an end-fed half-wave antenna.

Each of the terminals uses a heat-set insert as a finger nut to connect the antennas.

Supreme Court will hear challenge to limits on political party spending
The Supreme Court will hear a significant campaign finance case next term
that will examine whether it violates the Constitution to restrict the amount of money that political parties can spend in coordination with individual candidates.

The national Republican senatorial and congressional committees,
then-Sen. JD Vance (R-Ohio)
and then-Rep. Steve Chabot (R-Ohio) filed suit over the limits…

@pre@boing.world
2025-05-27 19:06:58
Content warning: re: Doctor Who - Wish World
:tardis:

A wish granting god baby, granting Conrad's wishes in service of the Rani, turns London into a misogynist utopia and The Doctor into a good husband and insurance worker.
Hard to say why misogynists are so keen on the American 50s. Perhaps because it was before blacks had the vote and women could do banking.
And if anyone doubts this ridiculous tale, their table stops working and their family might call the doubt police, so they soon learn not to. All very oppressive and subversive.
Ruby manages to doubt anyway. And all the disabled people who simply never enter into Conrad's mind. Nice touch that. Great scene in the tent city filled with the dispossessed. They don't seem to have actually done anything so far but maybe they'll get more useful in part two.
Conrad is on TV telling a story about a man named Doctor Who.
Giant dinosaur skeletons walk the city, stepping over sky scrapers, and a bone palace towers above the city. Because I guess Conrad wishes for it to be so in order to give the Rani somewhere to live.
The palace is beautiful and Gothic.
But doubt is seeping in. Rogue is back, on the TV in hell, telling the Doctor that tables don't work like that. So he investigates. Gets himself reported to the doubt police who take him and Belinda to the bone palace.
The Rani's split from Miss Flood gives the pair of them a good chemistry. Queen and her maid of honour. Seems like Mrs Flood is likely to be the Rani's downfall. She doesn't like being told to make a sandwich.
A lot of exposition going on, but they at least put a hat on it: "Isn't just exposition, I need you to doubt"
So that's the reason for the strange wishes: To make the doctor have doubts so severe that the reality collapses, and Rani can rescue Omega. Omega is the dude in a Mask from the first 3 doctors episode, who gave the timelords time travel and got trapped in the underworld in the process. Timelords forgot him and never mounted a rescue, but presumably Rani is now hoping he'll bring back Galifrey.
And with London collapsing into the underworld and the doctor falling from the sky, we get the episode break and have to wait until next week.
That's not a cliff hanger, that an already-falling-from-the-cliff hanger.
Poppy really is his daughter he's shouting as he falls. And you know what that means?
🤨🤔
Back in Space Babies, the worst episode of the Nchuti seasons, that space baby asked if he was her parents and he said he wished that he was their parents.
That wish has been granted somehow?
Is this space baby Susan's mother? They have very different skin tones, but that doesn't matter much in a regenerating species.
Never have found out much about The Doctor's child. When he traveled with his granddaughter everyone assumed he'd met his own kid, the grandchild's parent.
But that doesn't have to be true for a time traveler. Maybe he met the granddaughter before he met his own kid, and maybe his own kid was just wished into his family line 60 years later (or billions of years in his timeline I guess).
Pretty fun episode but not sure it makes much sense. Why doesn't the Rani just wish for Omega to be back instead of all this doubt and underworld bollocks?
Last one next week. Super long episode. Hope it's all cleared up. Good chance we'll meet Susan again I think. And maybe see Omega's mask once more.
:tardis: :tardis: :tardis: :tardis: :tardis:

@arXiv_hepph_bot@mastoxiv.page
2025-07-31 09:47:51

The $1/N_c$ Operator Analysis of the Combined Octet and Decuplet Baryons Contact Interactions in SU(3) Chiral Effective Field Theory
Chindanai Bubpatate, Dominador F. Vaso, Jr., Daris Samart
arxiv.org/abs/2507.22830

@azonenberg@ioc.exchange
2025-05-30 09:21:55

First crack at the SFP28 breakout/carrier module. Power and I2C are carried by the PicoBlade connector, high speed over the ARF6.
Single 4-40 mounting screw in the back for attaching to a standoff in the chassis, front side will be held by the front panel.

KiCAD 3D render of a PCB with a dual-height SFP+ cage, a high speed connector, a mounting screw, and a low-speed connector arranged in a straight line not much wider than the optic. A few not-yet-placed passives can be seen floating in space next to the board.
@midtsveen@social.linux.pizza
2025-06-29 22:26:54

I couldn’t sleep. My brain kept spinning: I brush my teeth at night. Then I don’t eat, I don’t drink, I just sleep. Nothing goes in my mouth. So why, when I wake up, do I brush my teeth again? I already did it! Nothing changed. It’s like someone decided mornings need a repeat, but my mouth is just as clean as before.
Sometimes I wonder, who decided this? Why do we all just do it, like it’s written in the sky or something? I like the feeling of brushing but not the taste of toothpaste, …

A serene painting of a young boy peacefully sleeping beside a gentle tooth fairy, surrounded by soft, dreamy colors.
@w6kme@mastodon.radio
2025-07-30 04:51:14

I shouldn't need to say this...but if you're reading this in Ventura County and considering going to the beach or one of the harbors to watch tonight...please don't. At the beaches you likely won't notice anything, but the whitewater from broken waves may suddenly be a lot further up the beach than you expect. Not fun at night.
A tsunami is really a change in sea level. The harbors are going to fill up by a foot, and it *could* be messy. Stay away and out of the way.

@Techmeme@techhub.social
2025-07-31 22:55:48

Apple incurred ~$800M in tariff-related costs in Q3, $100M less than expected, and expects a jump to $1.1B in Q4 if current rates and policies remain in place (William Gallagher/AppleInsider)
appleinsider.com/articles/25/0

@arXiv_csDM_bot@mastoxiv.page
2025-07-01 08:09:13

Linear Layouts of Graphs with Priority Queues
Emilio Di Giacomo, Walter Didimo, Henry F\"orster, Torsten Ueckerdt, Johannes Zink
arxiv.org/abs/2506.23943

The Fordham University
Tri-State Tick Risk Index for the week of June 27, is at the highest it can be:
a 10 out of 10.
What’s listed next to that score is the following:
"If you’re thinking of taking a hike, consider going to a movie instead."