Folks, if you're interested in this hobby I highly suggest you start studying for your technician license right now on hamstudy.org. it's a great site and free. You can use it as a guest if you don't want to make an account. The reason I say this is because it can take a few weeks to find a place to take your exam and then get your license. The waiting period sucks. Especially when you want to get into it right away.

Just listening is free and requires no license.

The exam is ~$15 depending on where you take it. The FCC fee is $35. The license lasts 10 years.

Some entry level radios I think are good enough to just mess around with before seeing if you want to dump more money into the hobby are:

• Baofeng UV-5R. ~$20. The original cheap handheld. You'll see folks shit on it, but that's about it's overall quality, not quality for the price. Obviously a $100 radio will be better. It's good enough for seeing if you want to pursue the hobby though.
• Tidradio TD-H3. ~$30. Came out this year I think. It's basically the UV-5R on steroids. It can receive way more frequencies and be programmed over Bluetooth. The Bluetooth programming app is annoying to use but it's still a nice feature. Supposedly it can be programmed via USB C but I couldn't get this to work. Other people have. It could be that all the USB C cords I have are power only.
• Quansheng UV-K5. ~$30. Also known as UV-K6 and UV-K5(8). They're only cosmetic differences. I personally haven't used this. The thing that makes this cool is that the firmware can be flashed with custom firmware! I know there are a lot of techies here on Lemmy so this might be a cool one to get.

Most of these come with accessories. Most of them are garbage. The longer antennas are nice. The programming cable is very important. Once you get one they seem to work with everything. You really need one, especially if the custom firmware on UV-K6 interests you. There is a program called CHIRP that lets you program them. It's very useful.

I always say this when someone asks why I am interested in radio, when you can make phone calls for free from pretty much anywhere to anywhere else.

One day, all that infrastructure may be switched off, or just gone. But I'll be able to take a piece of wire, hoist it into the air and have a two way conversation with people thousands of miles away.

It's also just very interesting I think, the way the signals are propagated differently at different wavelengths at different times.

I’m really close to being ready to do the test for my HAM license. It’s been enlightening to see all the applications and components tied to it. For anyone interested, even just getting started with a simple SDR setup can get you going on learning the basics about the various bands and intricacies involved.

Never been a better time to get into HF communications I think. You can get fairly inexpensive (comparatively anyway) Chinese software defined radio by Xiegu, and literally just stick a long wire in the back as an antenna and since the radio has an auto tuner, all you need to do is get that wire as high in the air as possible. I don't have that radio so I use a manual tuner but a setup like that is the only way I can get on the air from my current house.

Are there any active communities for ham on Lemmy? I recently got into the hobby. The only one I found is !amatuer_radio@sopuli.xyz but it only has two posts, one of them mine.

I don't think smart phones are conventional communications. The are smart. They are still the "tech of tomorrow".
Smart phones use conventional communications to do very clever things. But those clever things are range limited and require specialised equipment. They also have absolutely no "hackability" without specialised equipment (easy to get, sure... But still pretty much single purpose)

AM is literally a couple caps, inductors, resistors (edit: and diode) then an amplifier (a couple transistors and resistors). And the range of lower frequency radio waves is (or can be) phenomenal.
It's just that it takes some experience to operate on these frequencies, and their bandwidth is limited.

Smart phones do away with the experience requirements, and trade higher frequencies & higher data rates for range (and I guess trade digital encoding for simplicity)

I see parallels to software.
People are nervous to "side loading apps" on their phone, but have no issues downloading and installing an exe on windows.
Smart phones give you the "this is how" kind of experience, and abstract away the sheer amount of technology they leverage. Which is amazing, and is what makes them smart!
But the underlying technology is phenomenal. And I feel it's a shame that the majority of people don't have any understanding of "installing an app" or similar (like calling internet access "WiFi".... 2 distinct things!)