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einfach_orangensaft@sh.itjust.works ⁨3⁩ ⁨weeks⁩ ago

Thank you very much for the answer! The power difference between the 0.25W Lora and the 4W FM is huge yes, thats why i kinda hoped Thor over CB would give me better range in a environment where line of sight is not given and there isnt a Mesh network in place for the LoRa.

I am trying to make a low speed text chat connection at a distance of 20-40km, with half a city between the Radios. I looked into LoRa based standalone devices like the T-Deck, but what i saw online was sobering regarding the actual functionality out in the field(besides super duper ranges in elevated line of sight).

The next idea was just geting a cheap used CB-Radio and hooking it up to AndFLmsg, would that be realistic to clear the distance of 20-40km with half a city between it?

I mean if that dosent work out there is still the non licensed sub 9khz band… Image

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MangoPenguin@lemmy.blahaj.zone ⁨3⁩ ⁨weeks⁩ ago
Neat idea! Nothing is really going to go through multiple buildings in a city, so your best bet might be the ham bands that like to bounce off the atmosphere, bypassing the city entirely.

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- einfach_orangensaft@sh.itjust.works ⁨3⁩ ⁨weeks⁩ ago
  27mhz can skip if the conditions are right, im guess i just find out if it works. Used some web SDR to check the CB band round here…not much going on so at least there wont be much background noise
  
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  - cmnybo@discuss.tchncs.de ⁨3⁩ ⁨weeks⁩ ago
    When you get skip on 11m, it usually goes halfway across the continent and nothing will be heard the next town over.
    
    You need NVIS propagation to get a signal to a nearby location. That only works on lower frequencies like 30m through 160m depending on solar conditions. The signal gets send straight up and bounces back down in a several hundred mile radius around you. There is a map that shows which frequencies will currently work for NVIS as well as the Local Area Mobile Prediction tool to help you figure out what frequency to use for a given time and location.
    
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    einfach_orangensaft@sh.itjust.works ⁨3⁩ ⁨weeks⁩ ago
    
    NVIS propagation
    
    Is a interesting topic, basically what i am looking for. Problem being is that right now i am restricted to license free bands.
    
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  - MangoPenguin@lemmy.blahaj.zone ⁨3⁩ ⁨weeks⁩ ago
    Yeah sounds like a fun thing to try out
    
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