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New LoRa RF distance record

thethingsnetwork.org

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Re: New LoRa RF distance record

#31

Post by wienke »

jacquesm wrote: post #21
johanstokking wrote: post #15

CTO & co-founder of The Things Network here! I've been working with LoRa for over eight years now, and I keep getting surprised by measurements like this. What started off as "line of sight works" went to a successful "LoRa moon bounce" [0] and now a sea level reception over 830 miles. So, any physics people here care to comment how this works? Is this pure atmospheric refraction or is there something else? [0] https…

[flagged]

Sorry, I am here in all transparency. Not really hard to find out though as my first name and TTN are quite a unique pair.

Re: New LoRa RF distance record

#32

Post by jacquesm »

SahAssar wrote: post #23
jacquesm wrote: post #21

Earlier quoted context omitted.

[flagged]

Posting ones own content is not astroturfing unless they try to hide that it was them.

The submitter is a low karma anonymous account that just so happens to match the last name of the CEO of the company, so it isn't disclosed. Also this shot up on the 'new' page suggesting more than one company vote, this isn't the first time this happens with that particular domain either.

Similar stuff is happening on Wikipedia, read the talk page there (and the LoRa page) to see what I'm getting at.

Re: New LoRa RF distance record

#33

Post by MrOxiMoron »

ricardobeat wrote: post #16

How does this work? At this distance you need a 130km-high tower for line of sight due to earth’s curvature. The previous record was set on a balloon flying at 38km height. LoRa uses high frequencies so shouldn’t benefit from the ground effect?

probably the same amateur radio people can connect to people halfway across the globe; bouncing off an atmospheric layer.

Re: New LoRa RF distance record

#34

Post by wienke »

chronicsonic wrote: post #25

Cool! I had a tour a few months ago at this Telescope in Dwingeloo. Highly recommended, was amazing to hear the live sound of a pulsar (in the Crab Nebula).

If you want to know more Thomas Telkamp used that Telescope for a nice experiment and bounced a LoRa message on the moon: https://www.youtube.com/watch?v=nIdCzvLWCEc

Re: New LoRa RF distance record

#37

Post by wienke »

Svenstaro wrote: post #24
wienke wrote: post #12

Earlier quoted context omitted.

For sure would be great but LoRa has limitations as it is designed for small sensors that sent very little data: https://www.thethingsnetwork.org/docs/lorawan/limitations/

You're looking LoRaWan which is not the same as LoRa. In fact I believe web browsing to be quite feasible if you just use LoRa with your own network stack.

How would that exactly work?

Re: New LoRa RF distance record

#38

Post by wienke »

jacquesm wrote: post #35
wienke wrote: post #31

Earlier quoted context omitted.

Sorry, I am here in all transparency. Not really hard to find out though as my first name and TTN are quite a unique pair.

[flagged]

Ah thanks for the education. I updated my profile. Will try to gain more karma to gain more respect.

Re: New LoRa RF distance record

#39

Post by jacquesm »

wienke wrote: post #38
jacquesm wrote: post #35

Earlier quoted context omitted.

[flagged]

Ah thanks for the education. I updated my profile. Will try to gain more karma to gain more respect.

That's not what the karma mention was about, it basically means that you are not likely to be known here, that's all.

But fair enough, thanks for the profile update.

Re: New LoRa RF distance record

#40

Post by stavros »

Springtime wrote: post #18
martin_a wrote: post #6

Yeah... But WiFi doesn't work when I'm sitting on the toilet two rooms down the corridor. Crazy times. No, to be honest: Very impressive. It's kind of a "dream" of me, to bring Internet to the river/picknick area two kilometers away from me. LoRa would probably be the way to go, will have to look further into that.

From the relatively little I understand the lower the radio frequency the lower the bandwidth but more range it has/can pass through, while conversely the higher frequency the more bandwidth but shorter range/harder to penetrate obstacles (see eg: 5G). LoRa is the former and used for very low bandwidth applications, so not really suitable for browsing websites but has been used for for remote IoT stats, text messagin…

It's not so much about the frequency (though what you say is true), as there's LoRa at 2.4 GHz as well. I'm guessing the one in the article was 868/915 MHz, though.
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