pageflight

@pageflight@piefed.social

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⁨Comment⁩ on ⁨How to tune my ladder-line J-pole?⁩ ⁨⁨1⁩ ⁨week⁩ 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.

SWR improved

Moving it away from the 4x4 pillar, anywhere from 3” to several feet, fixed the tune.

Tune

I ended up using wood standoffs, since I didn’t have plastic, which seems to work fine.

final
⁨Comment⁩ on ⁨Soldering 20m and 40m low pass filters from QRP Labs for RPi WSPR⁩ ⁨⁨1⁩ ⁨week⁩ 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 :

wspr.rocks

The setup is running WsprryPi on a (old at this point) Pi B+ v2, fairly cobbled together, followed the guide at brokensignal :

wspr-pi
How to tune my ladder-line J-pole?media.piefed.social ↗
Submitted ⁨⁨1⁩ ⁨week⁩ 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 ⁨weeks⁩ 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 ⁨weeks⁩ 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 ⁨weeks⁩ 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!
Soldering 20m and 40m low pass filters from QRP Labs for RPi WSPRmedia.piefed.social ↗
Submitted ⁨⁨3⁩ ⁨weeks⁩ ago⁩ to ⁨amateur_radio@lemmy.radio⁩ | ⁨8⁩ ⁨comments⁩
⁨Comment⁩ on ⁨Making a 1:1 Balun for Amateur Radio⁩ ⁨⁨3⁩ ⁨weeks⁩ 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 ⁨weeks⁩ 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 ⁨⁨4⁩ ⁨weeks⁩ 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 ⁨⁨4⁩ ⁨weeks⁩ 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.
Built a bulkhead to bring antenna coax into my officemedia.piefed.social ↗
Submitted ⁨⁨4⁩ ⁨weeks⁩ ago⁩ to ⁨amateur_radio@lemmy.radio⁩ | ⁨11⁩ ⁨comments⁩
⁨Comment⁩ on ⁨⁩ ⁨⁨4⁩ ⁨weeks⁩ ago⁩:
Demographic data gathering, or training visual models for infantry drones to follow hand signals? ¿Porque no los dos?

⁨Comment⁩ on ⁨Memory and organizing banks for Yaesu FT-60R in Boston area⁩ ⁨⁨4⁩ ⁨weeks⁩ ago⁩:

Happy to share files!

I don’t know a way to attach a file in Piefed, but here’s the CSV contents:

Location,Name,Frequency,Duplex,Offset,Tone,rToneFreq,cToneFreq,DtcsCode,DtcsPolarity,RxDtcsCode,CrossMode,Mode,TStep,Skip,Power,Comment,URCALL,RPT1CALL,RPT2CALL,DVCODE
1,2MCALL,146.520000,,0.600000,,74.4,88.5,023,NN,023,Tone->Tone,FM,5.00,,5.0W,2M National calling frequency,,,,
2,2MADVN,146.580000,,0.600000,,88.5,88.5,023,NN,023,Tone->Tone,FM,5.00,,5.0W,"2M North America Adventure Frequency (NAAF), often SOTA",,,,
3,BARCSM,147.420000,,0.600000,,88.5,88.5,023,NN,023,Tone->Tone,FM,5.00,,5.0W,BARC simplex talkaround,,,,
4,70CALL,446.000000,,0.000000,,88.5,88.5,023,NN,023,Tone->Tone,FM,5.00,,5.0W,70cm Calling frequency,,,,
5,WALTHM,146.640000,-,0.600000,Tone,136.5,88.5,023,NN,023,Tone->Tone,FM,5.00,,5.0W,Waltham Wranglers Swap Net Weds 9PM,,,,
6,BOSBRC,145.230000,-,0.600000,Tone,88.5,88.5,023,NN,023,Tone->Tone,FM,5.00,,5.0W,"Daily traffic net 8PM, BARC club Mon 9PM",,,,
7,DANVRS,145.470000,-,0.600000,Tone,136.5,88.5,023,NN,023,Tone->Tone,FM,5.00,,5.0W,NSRA net Sun 8:30PM,,,,
8,BOSMRA,146.820000,-,0.600000,Tone,146.2,88.5,023,NN,023,Tone->Tone,FM,5.00,,5.0W,"MMRA, nets daily 9:45PM, club Tues 8PM, first Mon 8:30PM",,,,
9,K1USN,145.390000,-,0.600000,Tone,67.0,88.5,023,NN,023,Tone->Tone,FM,5.00,,5.0W,"K1USN swap net Fri 8PM, 2M net Sat 9AM",,,,
10,STARS,446.325000,-,5.000000,Tone,146.2,88.5,023,NN,023,Tone->Tone,FM,5.00,,5.0W,Sci-Tech ARC Net Tues 8PM,,,,
11,MARBRO,446.675000,-,5.000000,Tone,88.5,88.5,023,NN,023,Tone->Tone,FM,5.00,,5.0W,"Algonquin ARC, Sun 7PM",,,,
12,TRURO,147.255000,+,0.600000,Tone,67.0,88.5,023,NN,023,Tone->Tone,FM,5.00,,5.0W,"Cape: Pilgrim Net daily 9PM, weekly Sun 8PM",,,,
13,TISBRY,147.345000,+,0.600000,Tone,88.5,88.5,023,NN,023,Tone->Tone,FM,5.00,,5.0W,Cape: Martha's Vineyard,,,,
14,FALMTH,147.375000,+,0.600000,Tone,110.9,88.5,023,NN,023,Tone->Tone,FM,5.00,,5.0W,"Cape: N1YHS, listed by Falmouth ARA",,,,
15,DENNIS,146.955000,-,0.600000,Tone,88.5,88.5,023,NN,023,Tone->Tone,FM,5.00,,5.0W,"W1MA Elmer Net, 2/3/4th Mondays, Barnstable ARC Sunday 7PM, ARES Wed 8PM",,,,
16,GRNFLD,147.120000,+,0.600000,Tone,131.8,88.5,023,NN,023,Tone->Tone,FM,5.00,,5.0W,Western MA: KB1BSS,,,,
17,BTLBRO,146.865000,-,0.600000,Tone,100.0,88.5,023,NN,023,Tone->Tone,FM,5.00,,5.0W,Western MA: WR1VT,,,,
18,FTCHBG,145.450000,-,0.600000,Tone,74.4,88.5,023,NN,023,Tone->Tone,FM,5.00,,5.0W,"Western MA: W1GZ, net Sunday 9",,,,
19,GRDNER,145.370000,-,0.600000,Tone,136.5,88.5,023,NN,023,Tone->Tone,FM,5.00,,5.0W,Western MA: N1WW,,,,
20,ORANGE,146.625000,-,0.600000,Tone,110.9,88.5,023,NN,023,Tone->Tone,FM,5.00,,5.0W,Western MA: NA1P,,,,
21,HNVRTS,145.330000,-,0.600000,Tone,100.0,88.5,023,NN,023,Tone->Tone,FM,5.00,,5.0W,"Enfield: W1FN, Twin State Radio Club",,,,
22,HNVR,146.640000,-,0.600000,Tone,110.9,88.5,023,NN,023,Tone->Tone,FM,5.00,,5.0W,Enfield: W1UWS,,,,
23,ALFRDW,145.410000,-,0.600000,Tone,103.5,88.5,023,NN,023,Tone->Tone,FM,5.00,,5.0W,Mousam: WJ1L,,,,
24,ALFRDK,147.345000,+,0.600000,Tone,123.0,88.5,023,NN,023,Tone->Tone,FM,5.00,,5.0W,Mousam: KB1PRG,,,,
25,SO50AR,436.805000,split,145.850000,Tone,74.4,88.5,023,NN,023,Tone->Tone,FM,5.00,,5.0W,Activate SO-50's 10 minute timer for repeater activity,,,,
26,SO50AS,436.810000,split,145.850000,Tone,67.0,88.5,023,NN,023,Tone->Tone,FM,5.00,,5.0W,"SO-50 around AOS, +15kHz",,,,
27,SO50+T,436.805000,split,145.850000,Tone,67.0,88.5,023,NN,023,Tone->Tone,FM,5.00,,5.0W,,,,,
28,SO50+5,436.800000,split,145.850000,Tone,67.0,88.5,023,NN,023,Tone->Tone,FM,5.00,,5.0W,,,,,
29,SO50AZ,436.795000,split,145.850000,Tone,67.0,88.5,023,NN,023,Tone->Tone,FM,5.00,,5.0W,SO-50 center frequency for azimuth,,,,
30,SO50-5,436.790000,split,145.850000,Tone,67.0,88.5,023,NN,023,Tone->Tone,FM,5.00,,5.0W,,,,,
31,SO50-T,436.785000,split,145.850000,Tone,67.0,88.5,023,NN,023,Tone->Tone,FM,5.00,,5.0W,,,,,
32,SO50LS,436.780000,split,145.850000,Tone,67.0,88.5,023,NN,023,Tone->Tone,FM,5.00,,5.0W,"SO-50 around LOS, -15 kHz",,,,
33,ISSAOS,437.815000,split,145.995000,Tone,67.0,88.5,023,NN,023,Tone->Tone,FM,5.00,,5.0W,"ISS around AOS, +15kHz",,,,
34,ISS+10,437.810000,split,145.990000,Tone,67.0,88.5,023,NN,023,Tone->Tone,FM,5.00,,5.0W,,,,,
35,ISS+5,437.805000,split,145.990000,Tone,67.0,88.5,023,NN,023,Tone->Tone,FM,5.00,,5.0W,,,,,
36,ISSAZ,437.800000,split,145.990000,Tone,67.0,88.5,023,NN,023,Tone->Tone,FM,5.00,,5.0W,Center frequenc for ISS at azimuth,,,,
37,ISS-5,437.795000,split,145.990000,Tone,67.0,88.5,023,NN,023,Tone->Tone,FM,5.00,,5.0W,,,,,
38,ISS-10,437.790000,split,145.990000,Tone,67.0,88.5,023,NN,023,Tone->Tone,FM,5.00,,5.0W,,,,,
39,ISSLOS,437.785000,split,145.985000,Tone,67.0,88.5,023,NN,023,Tone->Tone,FM,5.00,,5.0W,"ISS around LOS, -15kHz",,,,

Memory and organizing banks for Yaesu FT-60R in Boston areamedia.piefed.social ↗
Submitted ⁨⁨5⁩ ⁨weeks⁩ ago⁩ to ⁨amateur_radio@lemmy.radio⁩ | ⁨4⁩ ⁨comments⁩
⁨Comment⁩ on ⁨Field day is next week. What's everyone doing?⁩ ⁨⁨5⁩ ⁨weeks⁩ ago⁩:
There are a couple clubs in/near my city. I’m planning to stop by one with the family after we do some errands, hear about what folks are doing, see if my kid wants to try making a contact. Also I may see what folks have to say about antenna placement.

I’ve been wanting to do a fox hunt and some clubs have set that up at field day I think.

Are swap meets often part of field day? I’m on the lookout for an SWR meter and/or external tuner, so I may watch out for that.
⁨Comment⁩ on ⁨How to know if that job will crush your soul⁩ ⁨⁨1⁩ ⁨month⁩ ago⁩:

What’s the lived experience of the workers there whom you trust? Do you have evidence of leaders in the organization making hard choices to do the right thing?

Very helpful, and very hard to get around if you don’t already have a connection.

Though in my experience, people will tell you a fair amount about the organization indirectly; and will often answer direct questions.
⁨Comment⁩ on ⁨Bluetooth earphones won't connect and need manual connection again 🤬⁩ ⁨⁨1⁩ ⁨month⁩ ago⁩:
Bluetooth also had variable and high latency, which makes it unusable for quick-reaction / rhythm games.
⁨Comment⁩ on ⁨Thar she blows⁩ ⁨⁨1⁩ ⁨month⁩ ago⁩:
Are people not trusted to pinch their own noses?
⁨Comment⁩ on ⁨⁩ ⁨⁨1⁩ ⁨month⁩ ago⁩:
I was just looking at the tree outside my window smirking at me. They’re everywhere!

leaves
Heard SO-15 for the first timemedia.piefed.social ↗
Submitted ⁨⁨1⁩ ⁨month⁩ ago⁩ to ⁨amateur_radio@lemmy.radio⁩ | ⁨0⁩ ⁨comments⁩
⁨Comment⁩ on ⁨Dance Dance Extinction⁩ ⁨⁨2⁩ ⁨months⁩ ago⁩:
Playing ITGMania over here with the DDR Galaxy sim pack .
⁨Comment⁩ on ⁨Thor⁩ ⁨⁨2⁩ ⁨months⁩ ago⁩:
þat was þoroughly convincing, I þought for a minute þere you were þat guy, had to check þrough your posts.
⁨Comment⁩ on ⁨Scientists claim to have found the "holy grail" gene for limb regrowth in a cross-species study spanning axolotls, zebrafish, and mice⁩ ⁨⁨2⁩ ⁨months⁩ ago⁩:

Axolotls are famous for their extraordinary ability to regrow entire limbs along with tails, spinal cord tissue, and parts of organs including the heart, brain, lungs, liver, and jaw.

Woah, that’s a lot of regeneration.

Mice can regenerate the tips of their digits, and humans can sometimes regrow fingertips if the nailbed remains intact after injury, allowing skin, flesh, and bone to regenerate.

TIL.

Unwritten here is how exactly they go about snipping mouse fingers and axolotl tails off. I hope there’s at least anesthetic involved.

In mice, the treatment encouraged bone regrowth in damaged digits and partially restored some regenerative abilities lost when the SP genes were absent.

So, sounds like small steps towards identifying part of the puzzle. Cool discovery, but plenty still to do before we’re regrowing mouse arms much less human arms.
HF antenna placement, rx v tx performance, rain gutter antennasmedia.piefed.social ↗
Submitted ⁨⁨2⁩ ⁨months⁩ ago⁩ to ⁨amateur_radio@lemmy.radio⁩ | ⁨1⁩ ⁨comment⁩
⁨Comment⁩ on ⁨Built a transmitter controller for a fox hunt⁩ ⁨⁨2⁩ ⁨months⁩ ago⁩:
Thanks! The HB9CV looks fun.
Built a transmitter controller for a fox huntmedia.piefed.social ↗
Submitted ⁨⁨3⁩ ⁨months⁩ ago⁩ to ⁨amateur_radio@lemmy.radio⁩ | ⁨3⁩ ⁨comments⁩
⁨Comment⁩ on ⁨New kink unlocked⁩ ⁨⁨4⁩ ⁨months⁩ ago⁩:
Not the best drivers, but clearly drivers! Cool.
⁨Comment⁩ on ⁨stages of mitosis⁩ ⁨⁨4⁩ ⁨months⁩ ago⁩:
The hair clips are a nice detail.
⁨Comment⁩ on ⁨⁩ ⁨⁨4⁩ ⁨months⁩ ago⁩:
I agree, seems more like an insightful reminder about inclusivity, product design, and data analysis; and a window into someone who’s probably incredibly frustrated trying to be positive.