pageflight
@pageflight@piefed.social
- Comment on a website for visualizing electromagnetism 5 days ago:
Oo, cool!
I don’t know enough to edit and make more antennas. But suggestions for more defaults / things I have questions about:
- Moxon antenna
- Slim Jim antenna
- Dipole with ends draped down, folded; inverted V, etc — if there were an easy way to bend the antennas that’d be fun
- Different materials nearby: chunk of metal, your head, ground plane at different heights
- Vertical with and without ground radials
- Comment on What does everyone think of QSO1? 1 week ago:
A big part of ham ratio for me is figuring out the antenna and signal propagation — having a QSO is a nice proof that I got the system working. How much does QSO1 work out-of-the-box?
- Comment on JS8Mail: Offline-first radio mail over JS8Call 1 week ago:
Alright, I got the js8call app installed and had a QSO. Mostly heartbeats though (on 40m). Glad to set up a sked if anyone wants, especially if you’d like a postal QSL card.
I had played with WSJT-X for FT8 and fldigi to try to find PSK31 or others. I didn’t realize JS8CALL wasn’t in fldigi with the others. The dedicated JS8CALL interface is much more inviting than WSJT-X though, and it’s nice that all the apps share mostly the same configuration for rig communication.
I’m getting some random characters typed while the rig is in transmit mode, probably need to invest in a USB cable with some ferrite beads.
It does make me appreciate CW more, though. No configs to get wrong, no stations in bot mode that you can’t actually talk with. I need to practice more before I can be my own modem at any reasonable speed though!
- Comment on JS8Mail: Offline-first radio mail over JS8Call 1 week ago:
What’s a good frequency/time to try out JS8CALL? It’s easy to find the big block of FT8 but I haven’t found other digital modes yet (just getting started with digital). I’m best set up for 40m.
- Comment on Ways to listen in on EME contest this weekend (Oct 31-Nov 1)? 1 week ago:
Did my homework. It sounds like to participate, you need some specialized equipment, but it may be possible to listen in to the most powerful transmitters.
- Presentation about EME including station setups
- Another presentation about EME setup and signal path
- EME blog post including a £5-10k station investment estimate, rig excluded, for two-way communication
- Submitted 1 week ago to amateur_radio@lemmy.radio | 1 comment
- Comment on Indeed 3 weeks 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 5 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 5 weeks ago:
Much better results with a higher pass.
- Comment on ISS Slow Scan TV Oct. 2-6 5 weeks ago:
Got part of one. 22⁰ pass, hoping to track a higher one later.
- Comment on ISS Slow Scan TV Oct. 2-6 5 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 5 weeks ago:
That’s certainly no XT60 on the end!
- Comment on Intuitive explanation for conductor diameter v. electrical wavelength? 1 month 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? 1 month 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 1 month ago:
What a breath of sanity.
- Submitted 1 month ago to amateur_radio@lemmy.radio | 6 comments
- Comment on I finally fixed my Yaesu! 1 month 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 1 month ago to amateur_radio@lemmy.radio | 0 comments
- Comment on I'm not sure they will 2 months ago:
If it’s deterministic, I don’t see it as AI.
- Comment on Trying to pick up RS38S (VIZARD-METEO) 2 months ago:
Definitely, I was twisting the Yagi back and forth to try to get better signal.
- Comment on How LoRa (ExpressLRS) Drone Receivers Work 2 months 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 2 months 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 3 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? 3 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 3 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 3 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 3 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
