LH0ezVT

joined 9 months ago
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What Can We Do to Get Youth into Ham Radio? in c/amateur_radio@lemmy.radio
[–] LH0ezVT@sh.itjust.works 2 points 20 hours ago (1 children)

You do realize that this hobby consists of nerds and pensioners, who sometimes spend thousands on being able to talk to other nerds?

If anything, you might need to politely stop people from over-sharing all the cool stuff they made.. :D

What Can We Do to Get Youth into Ham Radio? in c/amateur_radio@lemmy.radio
[–] LH0ezVT@sh.itjust.works 2 points 1 day ago (3 children)

As always, the answer is "it depends" :D

Feel free to PM me or ask in a new post

What Can We Do to Get Youth into Ham Radio? in c/amateur_radio@lemmy.radio
[–] LH0ezVT@sh.itjust.works 2 points 1 day ago* (last edited 1 day ago) (5 children)

10W at 2m, 70cm and 10m. Except for the 10m, which I have never heard anyone use (*), that fits pretty well with the idea of giving high school kids an aliexpress handheld to get them into STEM.

The ugly part is, you need to do the same regulatory and legal questionnaire that you need to do for the larger licenses.

"N Lizenz" in Germany, for reference

(*) I just remembered that 10m is basically CB, but Ham. So if you find/inherit an old CB radio and want to experiment, it might be a really cheap way into the hobby.

What Can We Do to Get Youth into Ham Radio? in c/amateur_radio@lemmy.radio
[–] LH0ezVT@sh.itjust.works 3 points 1 day ago (7 children)

My country just introduced a super-beginners license that can be done with basic high school physics. Of course, severe limitations, basically, a "Baofeng license". Still great idea.

What Can We Do to Get Youth into Ham Radio? in c/amateur_radio@lemmy.radio
[–] LH0ezVT@sh.itjust.works 2 points 1 day ago

The fuck? It seems I have been lucky. Most people here follow the "don't argue politics" advice.

What Can We Do to Get Youth into Ham Radio? in c/amateur_radio@lemmy.radio
[–] LH0ezVT@sh.itjust.works 2 points 1 day ago

Check out a local club. Literally, check it out. If it is full of arrogant assholes twice your age, leave. If they are cool but you don't fit in, ask them for advice. There are so many retired radio operators who are doing it to stay "in it", or retired engineers who finally have time and so on. Most of them are very happy to info-dump about their hobby.

What Can We Do to Get Youth into Ham Radio? in c/amateur_radio@lemmy.radio
[–] LH0ezVT@sh.itjust.works 2 points 1 day ago

It is fine for ham radio's original purpose: technical experimentation and connecting people. "Don't discuss politics' is a long-standing Gentleman's (woman's) agreement for a reason.

If you want to encrypt, go for the ISM bands. Lora, meshtastic, whatever happens at 433 MHz, hell even at 2.4 GHz a few 100mW will get you quite far with the right approach.

The difference is, your stuff will be type-checked. No experimentation, no building the crazy antenna idea that will be surelu fine according to your back of the napkin math.

People outside the US, do you still consider America a democracy? in c/asklemmy@lemmy.world
[–] LH0ezVT@sh.itjust.works 2 points 1 week ago

Unfortunately yes. People wanted this. They still want this. But people were also cheering for like, Mao even after he put millions of his own citizens into the ground, so who knows

history rhymes, or something in c/science_memes@mander.xyz
[–] LH0ezVT@sh.itjust.works 1 points 1 week ago

And? Seems like your definition and this community's definition of "science memes" differ. Who cares. What are we even arguing about?

history rhymes, or something in c/science_memes@mander.xyz
[–] LH0ezVT@sh.itjust.works 4 points 1 week ago (2 children)

My dude, it's right there in the description

A place for majestic STEMLORD peacocking, as well as memes about the realities of working in a lab.

Honestly, I have no idea what you are trying to argue

Anon uses Windows in c/greentext@sh.itjust.works
[–] LH0ezVT@sh.itjust.works 17 points 1 week ago

What the actual fuck. You know, I lock the screen because I don't want people to see what I am doing.

Anon uses Discord in c/greentext@sh.itjust.works
[–] LH0ezVT@sh.itjust.works 9 points 1 week ago (2 children)

Add telegram, threema, another matrix client for that other server and WhatsApp for some old friends to it

37
Testing a weird antenna in the park (sh.itjust.works)
 

cross-posted from: https://sh.itjust.works/post/34507515

How do you test your antenna idea? Well, our approach was to get a portable network analyzer that can show received dBm, put a commercial antenna on it, and strap the whole thing to a PVC pipe (for insulation and to get repeatable height). Then, zip-tie a cough drop to the PTT of a walkie talkie set to low power, so that it transmits continuously.

Now you can walk around your contraption with your Drain Pipe of RF measuring, and get a (rough qualitative) idea of how the pattern looks like. Much to my surprise, it actually worked.

27
Testing a weird antenna in the park (sh.itjust.works)
 

How do you test your antenna idea? Well, our approach was to get a portable network analyzer that can show received dBm, put a commercial antenna on it, and strap the whole thing to a PVC pipe (for insulation and to get repeatable height). Then, zip-tie a cough drop to the PTT of a walkie talkie set to low power, so that it transmits continuously.

Now you can walk around your contraption with your Drain Pipe of RF measuring, and get a (rough qualitative) idea of how the pattern looks like. Much to my surprise, it actually worked.

15
Technically, it didn't count as a SOTA :( (sh.itjust.works)
submitted 2 weeks ago* (last edited 2 weeks ago) by LH0ezVT@sh.itjust.works to c/amateur_radio@sh.itjust.works
1 comments fedilink
 

Picture from a hike back in January. I need to go outside more often ;)

35
Build my first magnetic loop today, holy sh.. (sh.itjust.works)
 

cross-posted from: https://sh.itjust.works/post/29055031

My first magnetic loop for 2m :)

Really simple construction: bent ca. 2mm brass pipe soldered directly to the outside of an SMA plug, inside of the plug soldered to the red wire as "input coil". Tunable by squeezing the ends more or less close together.

SWR of <1.2 at resonance, not bad. Impedance is at roughly 44+j2 Ohm, also not bad for totally eyeballing it without any prior calculations.

I can reach the nearest 2m relais just fine at 2W, although to be fair I can do the same with a short whip antenna. More testing to follow. Holy shit, this actually works!

74
Build my first magnetic loop today, holy sh.. (sh.itjust.works)
 

My first magnetic loop for 2m :)

Really simple construction: bent ca. 2mm brass pipe soldered directly to the outside of an SMA plug, inside of the plug soldered to the red wire as "input coil". Tunable by squeezing the ends more or less close together.

SWR of <1.2 at resonance, not bad. Impedance is at roughly 44+j2 Ohm, also not bad for totally eyeballing it without any prior calculations.

I can reach the nearest 2m relais just fine at 2W, although to be fair I can do the same with a short whip antenna. More testing to follow. Holy shit, this actually works!

347
Pick some unrelated lectures, they said. (sh.itjust.works)
 

It will widen your horizon, they said. And here I was, foolishly thinking I could get away with half-assing statistics during my degree.

434
Based on a true story (sh.itjust.works)
 

Turns out the status quo of Linux memory management somehow works pretty damn okay, nobody seems to really know why, and nobody cares.

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