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- Comment on Indeed 6 days ago:
We had heartless layoffs! You can use our virtual therapy service to get rid of any bad feelings so you don’t think about quitting or unionizing.
- Comment on World’s first enhanced geothermal power plant completed in just 23 months 2 weeks ago:
While traditional geothermal power taps heat sources close to the surface, Fervo and its peers are drilling deeper because deeper rock is hotter, opening more opportunities for development […] bringing drilling techniques and technologies from the oil and gas sector to the development of new geothermal resources.
Still not really clear what their tech is or how they got it done so fast.
- Comment on ISS Slow Scan TV Oct. 2-6 2 weeks ago:
Much better results with a higher pass.
- Comment on ISS Slow Scan TV Oct. 2-6 2 weeks ago:
Got part of one. 22⁰ pass, hoping to track a higher one later.
- Comment on ISS Slow Scan TV Oct. 2-6 2 weeks ago:
Awesome, I have been looking to do this but didn’t hear about it anywhere else, so thanks for posting!
- Comment on FireWire 2 weeks ago:
That’s certainly no XT60 on the end!
- Comment on Intuitive explanation for conductor diameter v. electrical wavelength? 3 weeks ago:
I hadn’t heard of Moxon, I’ll check that out. I have an Arrow Yagi, so I’m mostly just playing around to see what I can build, but also thinking of something that’s a little easier/shorter to carry around for a fox hunt.
Thanks!
- Comment on Intuitive explanation for conductor diameter v. electrical wavelength? 3 weeks ago:
Thanks for all the explanation!
I also ran across a video from Dr. Kathryn Leigh Smith at UNC-Charlotte which describes this incidentally as part of explaining how dipoles work, and has some nice illustrations. (Current rabbit hole: Should a HB9CV’s boom be conductive and electrically bonded to its elements?)
Anyway, got my Extra upgrade!
- Comment on Don’t be fooled by this summer of AI hype 3 weeks ago:
What a breath of sanity.
- Submitted 5 weeks ago to amateur_radio@lemmy.radio | 6 comments
- Comment on I finally fixed my Yaesu! 5 weeks ago:
Neat debugging story, I’d definitely be interested in reading more. Accompanying photos would be cool too!
- TIL Bz is one component of a 3-vector, but Bx and By orientations just don't interact with Earth's magnetic fieldwww.spaceweatherlive.com ↗Submitted 5 weeks ago to amateur_radio@lemmy.radio | 0 comments
- Comment on I'm not sure they will 1 month ago:
If it’s deterministic, I don’t see it as AI.
- Comment on Trying to pick up RS38S (VIZARD-METEO) 1 month ago:
Definitely, I was twisting the Yagi back and forth to try to get better signal.
- Comment on How LoRa (ExpressLRS) Drone Receivers Work 1 month ago:
Very cool, I didn’t know ELRS was LoRa.
I wanted to know more about the chirp, this video explains the details well: https://youtu.be/jHWepP1ZWTk?is=nadwHmLyK5TuqtVN .
- Submitted 1 month ago to amateur_radio@lemmy.radio | 2 comments
- Comment on BMW Is Showing Commercials On Their Car's Dash Screens And They Want You To Think It's A Treat - The Autopian 2 months ago:
Ah right, this was BMW too:
For the past few years, BMW has behaved in a way that seems to treat their buyers as targets for more revenue over everything else. Remember all their subscription bullshit? People hated that, and worked around it, and eventually BMW had to dial that back, because having a subscription for heated seats makes people want to riot.
So, definitely on the “don’t even consider” list.
- Comment on How to tune my ladder-line J-pole? 2 months ago:
Thanks for the terminology correction!
Removing the lights, taking the nails out, and interesting the antenna so lowered the SWR but didn’t improve the tuning.
Moving it away from the 4x4 pillar, anywhere from 3” to several feet, fixed the tune.
I ended up using wood standoffs, since I didn’t have plastic, which seems to work fine.
- Comment on Soldering 20m and 40m low pass filters from QRP Labs for RPi WSPR 2 months ago:
Tuned my 40m dipole and now I’m getting lots of spots! SWR was >9 before (resunant frequency around 6.3MHz gah), now 1.2:1. Spots as viewed on wspr.rocks :
The setup is running WsprryPi on a (old at this point) Pi B+ v2, fairly cobbled together, followed the guide at brokensignal :
- Submitted 2 months ago to amateur_radio@lemmy.radio | 3 comments
- Comment on What 370,000 College Essays Tell Us About A.I.’s Effects on Creativity 2 months ago:
As well as often producing slop, AI also erodes trust between humans and displaces real creative output.
- Comment on Soldering 20m and 40m low pass filters from QRP Labs for RPi WSPR 3 months ago:
This is the way it looked in the instructions, didn’t realize they might be setting up orthogonal orientations.
- Comment on Soldering 20m and 40m low pass filters from QRP Labs for RPi WSPR 3 months ago:
It’s on a Raspberry Pi that’s on the network and the clock looks accurate, so I think the NTP sync is working. Thanks for calling that out though!
- Submitted 3 months ago to amateur_radio@lemmy.radio | 8 comments
- Comment on Making a 1:1 Balun for Amateur Radio 3 months ago:
This has been puzzling me: The point of coax is to keep all the field inside the coax. But the way a toroid works is to interact with the field. Why doesn’t that prevent the balun from working when coax is used? From what I’ve been reading, is it that the balun is only affecting the current on the outside of the shield by design?
- Comment on Target acquired 3 months ago:
Thought I recognized the style — credit to xkcd. Please cite your source / sorry if I missed it!
- Comment on Built a bulkhead to bring antenna coax into my office 3 months ago:
Thanks!
Yeah, I considered steel wool. Between the styrofoam bottom and the rock wool and the height overall I’m hoping it’s not an attractive entry. The likelihood of sparks seems very low so maybe it’s irrational but the idea of steel wool next to electrical makes me a little uneasy. I may get some coax putty to fill in around the cables when I come back for the grounding line.
- Comment on Built a bulkhead to bring antenna coax into my office 3 months ago:
The dipole has a coil of spare coax closer to the antenna feed point, which I think also serves as an RF choke.
The VHF/UHV J-pole didn’t have any extra, but agree it would’ve been nice to keep a little extra coil if I’d had the option.
- Submitted 3 months ago to amateur_radio@lemmy.radio | 11 comments
- Comment on 3 months ago:
Demographic data gathering, or training visual models for infantry drones to follow hand signals? ¿Porque no los dos?
