Ham Radio

cross-posted from: https://lemmy.sdf.org/post/20077977

What cool stuff is going on with IP over ham radio? I want to build simple services accessible to other hams in my area, and would love to learn about what's out there.

• New Packet Radio: This looks pretty cool, although until the FCC makes a decision on updated VHF/UHF bandwidth and symbol rate restrictions, I'll hold off on buying any dedicated hardware

• Broadband HamNet: I'm not sure if there's any existing network in my area. Since it's 802.11 with yagis and amplifiers, I feel like you'd need a good density of local users for anything cool to develop.

• AX.25 with TCP/IP: I might play around with this. It doesn't require equipment except a UHF/VHF radio, antenna, and a computer, so it might be easier to convince others to try it too. Obviously you're very limited in bitrate, but it would be fun to set up a gohper hole or a BBS.

Are there other technologies or projects worth looking into? Even though I'm not personally interested in buying new equipment for it, I'd still like to hear what's out there.

Right, so this is the situation: I still haven't obtained my license here in Brazil, but I already have a Baofeng DR-1801 HT that can connect to dmr networks. Therefore I haven't transmitted yet. But I'd like to clarify some doubts:

• When I get my license, even in C-class in Brazil, I will be allowed access to some frequencies in 40-10m bands. Should I get a low power QRP transceiver (e.g. uSDX) or go for an used rig from known brands?
• It's almost impossible to find a transceiver project with a power rating greater than 10w. What would be the difficulty of, say, copylefting the schematics of an ft-7b?
• Can I really use a wire thrown over my house (of course, with baluns and stuff) as a monopole antenna or that's just myth?

cross-posted from: https://lemmy.world/post/14642252

cross-posted from: https://lemmy.world/post/14642244

cross-posted from: https://lemmy.world/post/14642241

cross-posted from: https://lemmy.world/post/14642231

cross-posted from: https://real.lemmy.fan/post/2770288

They need help scanning twenty more pallets of stuff.

Simple question that for some reason is difficult to find an answer to

cross-posted from: https://lemmy.sdf.org/post/7646743

I'm just getting into ham (my technician exam is tomorrow night), and I'm looking for ideas on starter kit.

For now, my interest is in making contact with a friend who lives ~10 miles away, as well as other amateurs in the county (there's a repeater ~2 miles away). This friend needs to reapply for his license, but he has a mobile 2m/70cm transceiver from his old call sign. Eventually, we'd like to get into digital communication between our houses.

Even further down the line, I think long distance HF sounds cool, but that looks like a money pit I'm not quite ready to dig just yet.

I don't want to set up any crazy antennas just yet, as partner and I are house hunting. This also means we could end up more like 15 miles from my friend, depending on what we find.

I was wondering if anyone here could suggest beginner's equipment for my goals. I'm ok to spend a bit more on systems that are still useful if my interest in ham expands beyond these initial requirements.

Found this to be a pretty neat visualization. I'm horrid at morse but this visual representation helps an awful lot.

Is there a portable civilian device that allows for short to medium range (10 miles or so) that would allow for 128 or 256 bit encrypted data bursts, and if so, what level certification would one need to go about for using it legally in the US? I’m imagining a data burst to convey less than 1 MB of data with an accompanying bit total that could then be “delivery confirmed” by a return message with that bit total. Bonus points if it could play nicely with a Disco32 Discus.

I know it wouldn’t fool a foxhunt, but was curious if such a thing exists and if so, what’s the entry cost in money and time?

I'm not usually one to repost/post memes...but its almost believable

These days there are lots of web-connected software defined radio receivers around the world. Back in 1995 I built a web-controlled shortwave radio web site using my Drake R8, a SoundBlaster sound card and NetBSD Unix. You can still see what it looked like with the Wayback Machine, https://web.archive.org/web/19970507174555/http://www.chilton.com/scripts/radio/R8-receiver

A few years ago I finally got around to learning enough JavaScript and Python to make an interactive HTML5 page with streaming audio. I think it turned out pretty nice. The controls mimic the functions of the R8 pretty closely with a few changes for simpler operation. Works with most web browsers (though not iOS/Safari which, for some reason, doesn’t support the HTML5 “mediaSource” type I use for decompressing the audio stream.)

Check out my HDR (hardware defined radio) at https://www.chilton.com/R8/receiver.html

SOTA was the biggest reason I got into amateur radio. Love mixing radio/tech with getting out in the fresh air.

I'm just curious what everyone's operating positions look like. If you feel comfortable, share a photo or two.

Here's mine. I'm really wanting some sort of shelving to sit the monitor's on to help tidy things up a bit. I'm not too handy though, so it'll be an adventure. The autotuner controller drives me crazy because it won't sit flat due to the heavy coax coming into the back.

Looks like the last post is a year old. Are there any hams/amateur radio operators here on lemmy? If so, what projects (if any) are you working on? I'm building a 5 element yagi for 2m.