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FT8 – Tipping Point for Ham Radio?

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21–30 of 115 posts

Re: FT8 – Tipping Point for Ham Radio?

#21

"Zero sunspots but working DX on FT8!" I don't get it. I thought sunspots killed radio communications?

Simple explanation, sunspots energize the atmosphere making it easier for lower frequency signals to bounce off the upper atmosphere back down to the ground allowing longer range because you're not horizon limited.

Re: FT8 – Tipping Point for Ham Radio?

#22

"Zero sunspots but working DX on FT8!" I don't get it. I thought sunspots killed radio communications?

DX is a term for a long distance contact. Increased sunspot activity results in increasing ionosphere ionization, resulting in an increase in the refracting power of the ionosphere. Higher refracting power means radio waves can be bent more, resulting in longer distance communication (also, the ionosphere bends lower frequencies better, so you get an increase in the MUF, or Maximum Usable Frequency that will get bent back to the earth.)

Re: FT8 – Tipping Point for Ham Radio?

#23

"Zero sunspots but working DX on FT8!" I don't get it. I thought sunspots killed radio communications?

Depends on the band and your application. So what the HAM radio operators are doing is bouncing signals off the ionosphere. With more sunspots active, the ionosphere is more electrically charged, making is easier to bounce signals off of.

People have bounced signals off of the ion trails of meteorites, space shuttle reentry, and other absurd stuff :)

Re: FT8 – Tipping Point for Ham Radio?

#24

This has one unspoken bonus feature: Not having to talk to an octogenarian about politics. I know it sounds silly, but I suspect this is one of the huge features driving it's success. Amateur radio is plagued by bad actors and grumpy old men, along with the general age imbalance that makes it fairly unpleasant for young people and extremely unpleasant for anyone who sounds vaguely feminine...

As someone who went from nothing -> Amateur Extra when i was 23 (25 now) from a random spurt of inspiration to learn ham radio and then promptly did nothing with the license i agree with this.

I don't know exactly what i was expecting from getting the license but i will say that i didn't expect it to basically just be dominated by old conservative men who don't appreciate younger folk stepping in on their air space. I have yet to actually speak to anyone because i don't feel like there is anything i would want to say.

Part of me was excited to do things like decode ISS transmission or send digital packets around the world; but i wanted to ease into the higher cost HF equipment with a simple and cheap as chips baofeng UHF/VHF radio (i know, its garbage but i like i said i wanted to ease into the hobby) and when i discovered there was nothing to do but listen to old men rant i just shelved the radio.

I considered getting the bitX40 but never ended up doing it because i don't own the house i rent and putting an antenna up seems like a lot of work for a place i might move from soon. Admittedly maybe my problem was getting a baofeng UHF/VHF instead of something that i can plug into my computer and do digital modes with. But no one was really around to help me decide what to choose or give me insight into what i may want to do with my new AE powers.

Re: FT8 – Tipping Point for Ham Radio?

#26

This has one unspoken bonus feature: Not having to talk to an octogenarian about politics. I know it sounds silly, but I suspect this is one of the huge features driving it's success. Amateur radio is plagued by bad actors and grumpy old men, along with the general age imbalance that makes it fairly unpleasant for young people and extremely unpleasant for anyone who sounds vaguely feminine...

I'm a regular on HF and I've found the community to be welcoming and I've learned a lot from people with half a lifetime more experience than I have. Retired doctors, aerospace engineers and other interesting fields. There are many younger contesters who move very quickly and just work to make contacts.

Bad actors? There are a handful, but FCC has taken enforcement action against several. https://www.fcc.gov/general/amateur-radio-service-enforcemen...

Weak signal modes have been around for a while. And voice is a different part of the spectrum.

Re: FT8 – Tipping Point for Ham Radio?

#27
post #9

I'm trying hard to figure out what these "modes" are. Even after watching a video[0] I'm still not sure what is really going on. Is the whole point just to acknowledge 'pings' from other transmitters? Seems kind of pointless but I assume I'm missing something.... [0]: https://www.youtube.com/watch?v=NzXkIvoqvAY

"Modes" would be much better named as "protocols" (like "Ethernet" or "IP"). Originally it was rudimentary analog protocols: AM, FM, Morse/CW that were decoded with simple circuits where "mode" might have been more appropriate.

Re: FT8 – Tipping Point for Ham Radio?

#28
post #24

This has one unspoken bonus feature: Not having to talk to an octogenarian about politics. I know it sounds silly, but I suspect this is one of the huge features driving it's success. Amateur radio is plagued by bad actors and grumpy old men, along with the general age imbalance that makes it fairly unpleasant for young people and extremely unpleasant for anyone who sounds vaguely feminine...

As someone who went from nothing -> Amateur Extra when i was 23 (25 now) from a random spurt of inspiration to learn ham radio and then promptly did nothing with the license i agree with this. I don't know exactly what i was expecting from getting the license but i will say that i didn't expect it to basically just be dominated by old conservative men who don't appreciate younger folk stepping in on their air space.…

Guys, no one is forcing you to listen to that stuff. Get off the voice bands, get on digital and you'll have a blast.

Here's a fun talk at Defcon from Balint Seeber, a ham who focuses on security, to get you in the right headspace. I attended this and the group of 6 of us that hung out afterwards with Balint was some of the most impressive people I've met at Defcon. One had built a bug sniffer. Another was intercepting satellite comms over Iraq. And Balint had a prototype SDR board he shared with us. So much fun.

https://youtu.be/cHtHBqSZE4k

Yes, there is a community of rag chewers who use the voice bands, especially lower HF, to keep in touch with friends. That's a tiny part of the hobby and community.

Re: FT8 – Tipping Point for Ham Radio?

#30

This has one unspoken bonus feature: Not having to talk to an octogenarian about politics. I know it sounds silly, but I suspect this is one of the huge features driving it's success. Amateur radio is plagued by bad actors and grumpy old men, along with the general age imbalance that makes it fairly unpleasant for young people and extremely unpleasant for anyone who sounds vaguely feminine...

I'm a regular on HF and I've found the community to be welcoming and I've learned a lot from people with half a lifetime more experience than I have. Retired doctors, aerospace engineers and other interesting fields. There are many younger contesters who move very quickly and just work to make contacts. Bad actors? There are a handful, but FCC has taken enforcement action against several. https://www.fcc.gov/general/…

You're definitely right that there are a lot of really cool people out there. I had a similar experience joining an EAA chapter to discover that a whole bunch of them had worked on Hubble.

That said, the FCC in my experience has been pretty lax about policing the amateur bands. You can go to any online SDR and tune around to find obnoxious, toxic, and illegal behavior within minutes. I've also found that if you're lucky enough to find someone under 50 on the airwaves, there's a >25% chance they're a crazy prepper.

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