Jump to content

Blaise

Members
  • Posts

    249
  • Joined

  • Last visited

1 Follower

About Blaise

Profile Information

  • Name
    Blaise
  • Unit Number
    0
  • Location
    NYS Capital Region

Recent Profile Visitors

The recent visitors block is disabled and is not being shown to other users.

Blaise's Achievements

  1. OK, here's one for the folks that actually understand how EM propagation works in practice: A couple of years ago, the current distance record was set for LoRa at more than 800 miles. The communication was between a fishing boat and one of the buoys in its fishery across open ocean. https://www.thethingsnetwork.org/article/new-lora-world-record-1336-km-830-mi Frankly, I'm confused as to how that happened when, by my best guestimates, the unit on the buoy has a horizon at around 4 miles. The one on the boat, due to its greater height, had a horizon at more like 15 miles, but that still doesn't make it better! Now, I was under the impression that signals in the 800-1000 MHz range sere strictly line of site, with neither ground nor sky propagation. Nonetheless, this event would imply that either I'm completely wrong about how EM propagation works, or somebody's fibbing...
  2. I believe bubble-gum is the standard...
  3. I spent a decade in this Asia too. The one thing I never understood was why they would sometimes do both, using a spelling of their westernized Chinese (etc.) name with such bad phonics that westerners couldn't help but pronounce it wrong. So now they had the 'westernized' name they introduced themselves to you with, the name everyone who hadn't spoken closely with them or been corrected used for them based upon spelling, and their original Asian name. Somehow, we survived the 90s...
  4. You need to look out for those krakens...
  5. This man governments!
  6. What about the protestors? Are they using GMRS too?
  7. *Proving* it is an entirely different matter...
  8. Just because lots of people are mistaken at once, doesn't mean they're right!
  9. You know, after I posted that glib reply, I started thinking (which is always super-dangerous, according to some people: People like my wife and closest friends!)... Because of the broadcast nature of LoRa technology, where every transmission is just put out there with the hope someone will help you get it where it's going, I actually don't think it *does* technically fit the definition of a network!
  10. The little handheld power bricks OP was talking about can often have minimal BMS, if any. Especially if you got it from Ali Express! She's a hard lady to find, that Miss Conception.
  11. FYI, anyone following this: Walmart has a 2 ridiculously cheap power stations perfect for running a radio/charging your gear/lighting your campsite/etc... https://www.walmart.com/ip/EF-EcoFlow-Portable-Power-Station-RIVER-2-240-243wh-LiFePO4-Battery-1-Hour-Fast-Charging-600W-Output-Solar-Generator-Solar-Panel-Optional-Outdoor-Cam/5478283286?adsRedirect=true https://www.walmart.com/ip/Flashfish-Portable-Power-Station-Mini-Solar-Generator-98Wh-26400mAh-Lithium-Battery-120W-110V-AC-Outlets-LED-Light-Backup-Battery-Camping-Outdoor/371451213?classType=REGULAR Note: the $149 one is marked in watt-hours, and the $69 one is in amp-hours. LifePo cells are about 3.7 volts, so multiply the Amp-hours by 3.7 for a rough(very) comparison. Whether the numbers listed are true? Well, Walmart's better than Temu, but marketing departments are ubiquitous...
  12. It's most true of straight lithium ion. LiPo is much better. I've seen them run down to 10% or less numerous times and still retain most of their capacity. They don't like it if you *leave* them uncharged, though. More than day or two sub-10% can easily do them in...
  13. If you use the libraries, you can get it to do a whole lot more, I'm told. I'm not afraid of a compiler! Every packet has a 237 byte payload, so you'd have to spend a lot of effort hacking the voice data into chunks, then reassembling them. It might work, it might not, but it sure would be fun trying! Also, GMRS data is likely only about 2 kbps, so there'd be plenty of room for at least that.
  14. Well, as long as we keep in mind that Meshtastic is a mesh technology, not a network technology, I'm sure it will be fine...
  15. Hey, so My friends and I are building out a Meshtastic network with a bunch of cheap nodes built out of LoRa dev boards, solar panels, 18650 batteries, and Walmart plastic boxes. They don't have the best antennae or the best chips, but you can build them for about $20 each, and scatter them *everywhere* (with permission, of course). I had a thought about using this mesh, or one like it, to link GMRS repeaters to get around the hills and mountains we deal with here. The data rates theoretically top out at about 5kbps, but that should be fine for raggedy old HT voice communications, and data is, well, data... Anyone given any thought (or practice) to building a LoRa/GMRS modem?
×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use and Guidelines.