LoRa Meshtastic Range Test, Portable Relay & Your Questions - Off-Grid Communication

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Here we go! Follow-on video from last week. You want to know ranges? Lets talk about it. Also I'll answer many of your questions to get you started with Meshtastic.
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#HRCC #Meshtastic #LoRa
0:00 Intro
0:37 Range of LoRa and Meshtastic
2:20 Waterproof Relay Setup
5:16 Suburb Range Test
8:00 How to solder the screen on
10:48 Questions from the comments answered!

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14 июн 2024

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Комментарии : 508

@StripeyType 2 года назад

Once more, for the people in the back: "on grid" or "off grid" terms have nothing to do with any particular feature or capability. These terms are used *solely* to describe whether or not a system is integrated with public infrastructure. Solar power? OFF GRID - not because you can't get lots of electricity from solar, but because you are literally not required to be connected to the electrical supply grid. WiFi in Infrastructure mode? ON GRID (with the caveat that we mean an AP connected to the internet) You're connected to infrastructure! it's in the freaking name! WiFi in ad-hoc mode? OFF GRID - devices communicate directly with one another without the need for a router RAIN BARREL FOR DRINKING WATER? OFF GRID City Water Supply? ON GRID Texting over LoRa? IT'S DECENTRALIZED AND REQUIRES NO INFRASTRUCTURE YOU ABSOLUTE WALNUT IT IS OFF GRID BY DEFINITION REGARDLESS OF YOUR WIDDLE FEEFEES ABOUT TEXTING. SMDH

@HamRadioCrashCourse 2 года назад

Well said. 👍

@StripeyType 2 года назад

@@HamRadioCrashCourse sorry for getting a little heated in your comments.

@ultimatums1 2 года назад

@@StripeyType salty much?

@StripeyType 2 года назад

@@ultimatums1 I'm O.G. sea salt. Like I know and lived through the sequence of global events that brought the term "salty" into common parlance for English-speaking civilians and was salty before *that*. I was, once upon a time, *professionally* salty. It was my job.

@ultimatums1 2 года назад

@@StripeyType at least you are willing to admit your childish behavior.

@Meshtastic 2 года назад

Lots of good questions answered here! Happy to colab if there are other questions.

@BluestedSRT4 2 года назад

Next test, use 3 T-Beams, one at your home, one in your car, and one on a drone. Drive out until out of range, then fly the drone up 4 or 500 ft and try again. Keep going until out of range.

@audguy 2 года назад

400 AGL is the celing for drones in the U.S. (if you want to be leagle) But, yes that would be awesome!

@ChristopherScanlan88 2 года назад

I was thinking of doing something like this (using drone as antenna base), but I would like to keep the drone tethered to the ground with a super light weight power cable to keep the drone up indefinitely. It would depend on if I could find a 300ft power cable that isn't too heavy for the drone and can still handle the power.

@nickb9437 2 года назад

Was thinking of trying the same thing please try this!

@PrebleStreetRecords 2 года назад

I was thinking of trying the same thing today- a DJI Mini should be able to lift a t-beam and 18650

@JeffreyGordonTheTank 2 года назад

@@ChristopherScanlan88 why not just use a ballon at that point?

@frequencymanipulator 2 года назад

* Grabs popcorn. I love this LoRa stuff right now for some reason.

@veizour 2 года назад

Thanks for answering questions, providing a channel suggestion, and running a test. This is great! Really appreciated. +1 upvote

@djk8541 2 года назад

2 miles in a suburban environment seems pretty impressive for such a tiny little device. I live smack in the center of a roughly 4 mile by 4 mile town so I should be able to communicate from nearly anywhere in town except south of my home where the larger downtown buildings are located, and that's okay because no one goes there unless they're buying crack

@HamRadioCrashCourse 2 года назад

It did three miles.

@ancapftw9113 2 года назад

Interesting, because Meshtastic would work well for secretly contacting your dealer.

@djk8541 2 года назад

@@ancapftw9113 My weed guy is like 200 feet away. I could place an order with cans and string lol

@PatrickKQ4HBD 2 года назад

@@djk8541 🙄

@user-jt5vm3mi1w Год назад

whats the point though

@PrebleStreetRecords 2 года назад

I love that every time I find a new project to start, you’ve just made a video covering it in great detail. 73!

@HamRadioCrashCourse 2 года назад

Damn, am I that good?

@ricks4361 4 месяца назад

Once again knocking it outta the park w this info. Intriguing concept. Got solar so I’m all in on this off grid comms. And this info is already 2 yrs old. The growth potential is amazing. Thanks again.

@HamRadioCrashCourse 4 месяца назад

I hope you saw my last live stream with some of the devs!

@cam_DA_Hawkdriver 2 года назад

I’ve got two and just soldered them up before watching this video. Your answers on the iPhone app was very helpful. Thanks!

@elchainrash4569 2 года назад

Great videos on LoRa. You use basic language to describe the way it works which is great for someone like me who would definitely be considered ’green’. Sometimes too much information just causes me to lose interest because I don’t understand the jargon but thankfully you kept it simple which I personally appreciate. I’m not into HAM but am interested in RC planes/FPV and will watch out for new developments in this field.

@alaingoyette7103 10 месяцев назад

Thank you Josh and awesome videos from a Ham perspective introduction to LoRa. Just to add on to the conversation, we use LoRa(WAN) as an extension to the limited WiFi range on the devices we build using arduino and Pi to communicate. Some use cases are alerting of wandering cows beyond a limited area on farms by putting proximity tags on cows, humidity and temperature sensing in far away greenhouses from main building, etc the sky is the limit as to what can be developed and has very low energy consumption and very reliable all things considered. Thanks again Josh for very eloquently introducing this technology as a supplement to the Ham comms space.

@markdupuis879 2 года назад

Really cool stuff. Thank you Josh for yet another great and informative video.

@HamRadioCrashCourse 2 года назад

Thank you!

@Ronl53 2 года назад

Great video. I hope that everyone appreciates the effort you go to to make these videos. Well done.

@HamRadioCrashCourse 2 года назад

Thank you!

@m14v81 2 года назад

I was about to comment range on the first video then I saw this link. 😁 Freaking awsome. Definitely answered all my questions.

@Michael-im1vc Год назад

I'm still in the learning/ info gathering stage. This was quite helpful, thanks! 👍🏻

@MrBalinSuperTV Месяц назад

Amazing detail! I appreciate you.

@dukeofcrude5742 2 года назад

Great video! I have some T beams on order and am super excited to try them out. I’ve got a hunt on the north slope of Alaska planned for 2022 and hope to use them there.

@AKBUTCHER0 2 года назад

How you gunna use this tech for that? Seems like you should just get a in reach

@jjjjjjjjjjjjjjjjjjjjjjjjjjjjj0 2 года назад

Doing a large test with a similar set up here in the next week. Very excited 😊

@jimlahey5354 2 года назад

How'd it go?

@thomast8539 2 года назад

Not being a HAM user, this is all good stuff Josh. Thanks for the breakdowns in both videos and any future videos as well. Very interesting tech.

@CWGminer 2 года назад

FYI Ham is not an acronym, it's just a slang term for amateur radio.

@PatrickKQ4HBD 2 года назад

@@CWGminer High Antennas on Mountains. Horrible At Music. Happy to spend Any Money. 😁

@markmaker2488 2 года назад

FYI the 3v3 is the 3 volt rail, the next is GND which is ground. Then serial data pin : SDA (default is GPIO 21) serial clock pin : SCL (default is GPIO 22)

@ajdu5390 2 года назад

Thank you for these videos. I have no experience in radio/ lora comms, but am interested in trying it out now!!

@HamRadioCrashCourse 2 года назад

Nice! Give it a go!

@LoneWolf0648 2 года назад

a good way to put this is the lora device is acting like a modern version of CB radio... you can use anything with Bluetooth to access it (ancient laptop, super budget tablet, old smart phone... anything) a good use for this is in a power outage since everything needed can be run off solar and batteries so you can still talk to people. these can be strung together so for example, here he started having issues at 3miles from his home, if you have a friend the lives at 2.5 miles out and they have one, it can relay your signal so now you have closer to 5 miles in that direction... as more and more people get these devices they will slowly become a larger and larger network that is not tied to a company like cell phones and the internet. that youtuber with the world record also has a video showing how to make simple walkie talkies that us a mumble server, you can set up a mumble server on a raspberry pi and build your own private long range network.

@johnwest7993 2 года назад

I'm planning on just a wireless BLE keyboard to send the text to the LoRa transceiver. It uses far less energy than any of those other devices. The AA batteries in mine have run for 2 years, so far.

@Lugeix 2 года назад

If you're in Cerritos, we are practical neighbors. QTH is OC. 2 years ago, I built a lora telemetry transmitter for the Solar Cup boat race. I got about 3 miles with a ground plane at Skinner Lake, Temecula. In Huntington Beach, I put the Transmitter on the roof of HBHS, and could get the signal at the end of HB the pier. I was using 900mhz 3db antenna at both ends.

@6345788 Год назад

Great explanation of the grid 👍

@ThingEngineer 2 года назад

Now… GPS+RSSI+data logging+drive around for hours+google heat map. :) Great follow up video!

@Johnny-iy8bj 2 года назад

Great information, thanks. Although I don't understand everything yet I feel this technology has a great future.

@WaschyNumber1 2 года назад

Thank you for clarification 👍🖖

@JeffLatimer 2 года назад

I could see this being a very handy tool to use in a neighborhood if there was a grid down situation (hurricanes are a thing here in FL). You could at least check on your neighbors and make sure they are OK or their roof isn’t leaking or whatever…

@NelsonReyesJr 2 года назад

EXACTLY

@USAFWolf 5 месяцев назад

Great guide, thanks a ton for this!

@0megaJB 2 года назад

Thanks for doing these videos, I'm really interested in a LoRa network for a very rural area where cell service is very limited and not having to rely on radios for communications. The weatherproof box with a solar pannel looks very promising. I just wish these components are easier to find from US based sellers.

@edwardfletcher7790 2 года назад

They're never going to be common thru US sellers. They're made in China and open source so it's Shenzen, China. Just choose an AliExpress seller with a +95% rating and wait a month.

@zephsmith3499 2 года назад

For long range, remember that the data rate is slow!

@billbolen8115 2 года назад

Awesome, as always!

@scottwood1143 2 года назад

You have the patience of Jobe my friend 😁 Fun stuff!

@BenjaminHeyser 2 года назад

Great video. Since your first video on this I've been thinking of possible uses for staff communications at scouting events. Almost everyone has a smartphone today, but cell service is spotty at a lot of scout camps, so this offers a way to use a texting like service where there's no or limited cell service. The no license part makes it much easier to use when the majority of the group aren't hams. I had thought of trying to use APRS in this situation, but LoRa really looks like a much easier to implement solution. With APRS you need an HT, TNC (assuming you didn't go with a higher end HT with it built in) and most often cables to connect. LoRa is much simpler, just the LoRa device and Bluetooth to the phone, tablet, iPad, etc.

@PatrickKQ4HBD 2 года назад

That is a PERFECT use case. We're not trying to be super spies or talk around the world. Just trying to keep a bunch of kids alive. 😂

@dissmani 2 года назад

Another option would be that Motorola makes a FRS/GMRS radio that can send text and location data. They are like $50 each, and are also standard FRS radios so you can do voice. Not encrypted, but you shouldn't need that.

@madbroindustries 2 года назад

@@dissmani what model is that?

@dissmani 2 года назад

@@madbroindustries T800 series.

@thehealthpolicychannel1229 Год назад

There are iPhone and android apps that you can download and will use wifi direct to communicate with each other. Range will obviously be less than lora

@don_n5skt 2 года назад

I ordered a LORAWAN device and a couple of LORA devices just to see what this is about. Oddly, there is some crossover with Crypto currency and these things. Hmmmmm. Fascinating stuff.

@JamesNearn 2 года назад

I suspect you quickly discovered Helium mining?

@jjjjjjjjjjjjjjjjjjjjjjjjjjjjj0 2 года назад

YES! Finally this community is growing!

@jonathanleclerc2788 2 года назад

You mean blockchain?

@W9HJBill 2 года назад

In a future video can you PLEASE look into using LoRa and ATAK. I have 4 nodes incoming to me and can't wait to get them. I've already scoped out several high points to put nodes and 10W solar panels with 12Ah batteries to make them self contained. Having multiple ATAK devices using the mesh would be invaluable.

@TheDieselbutterfly 2 года назад

The atak device was destroyed....Roger Moore threw it over the mountainside in " for your eyes only "

@Kiroley 2 года назад

Let us know how you get on

@PrebleStreetRecords 2 года назад

I’m looking into the same, I was looking at building a “repeater” node into a micro pelican case with a small solar panel to place on a nearby mountain and use ATAK while hiking.

@madbroindustries 2 года назад

@@PrebleStreetRecords let me know if that works out for you. I am very interested.

@tannhausergate9915 2 года назад

Which band did you choose and how well is it working?

@esrevinu. 2 года назад

excellent videos,... The Last Ship, tv show on TnT, had a storyline where people were communicating using exactly this type of "service",... cool stuff to learn about. Could come in handy if shtf lol.

@Bianchi77 8 месяцев назад

Nice video, well done, thank you for sharing the knowledge with us :)

@TommyJordan 2 года назад

Going through all your videos. Great stuff. Thanks for taking the time to share. One question - Where did you get your project clamp/vise? I'd love one like that for some of the small work I do.

@HamRadioCrashCourse 2 года назад

It’s a cheap PCB vice off Amazon.

@k9gcpradio424 2 года назад

Many ham radio videos encourage me to buy more gear, now I have to buy some acreage to create a use case for LoRa.

@groberts1980 2 года назад

I definitely like the idea of LoRa. Especially being able to package this up in a waterproof box with a solar charger. I live in Albuquerque and we have mountains right near us. I'm wondering if I could place a setup on the mountain which has line of sight to the entire city and use the mountain peak like a repeater for other Lora boxes.

@PreparedOverlander Год назад

Yes you can. It would be a relay station instead of a repeater. You can bury the box with the LoRa device to keep it out of the sun, run a longer wire to an antenna in a tree, that would help to overcome any other obstacles in the way.

@joaquinoro6082 5 месяцев назад

Did you ever get it up and running ? L

@xtoorgaming3982 2 года назад

this is perfect for SARs operations to give out location quickly where signal is less than ideal

@mikerupe1642 2 года назад

Perfect to bring wifi and messaging and voice to supressed people

@WSallai 2 года назад

I have the same view of its usefulness in such a situation. Also for disaster recovery where the infrastructure is damaged/destroyed (e.g., hurricane, tornado or earthquake).

@volkerscheithauer9378 2 года назад

Great content ! Would like to see how to combine LoRa with Raspberry Pi / Compute Module.

@jdsr7423 2 года назад

Just found your channel and liking it thanks for your efforts sir. Maybe a differently worded answer for "Bob" would be to just say you're off primary grid's and operating your own private local communications grid. Maybe some kind of translation issues or something that's losing the point that the phrase "Off Grid" isn't so much no grid as it is completely independent and isolated grid. If you're in an "off grid" home with solar, wind or even standard generator and powering the home and a separate workshop and or a water well you're on an electrical grid of your own creation, same goes for water etc etc😉

@Siskiyous6 2 года назад

The essence of Liberty, and the key to prosperity, is to provide our own infrastrukture - it is time to end the crony rent seeking going on over spectrum, this is the bright future we have to claw our way into.

@mattheweburns 2 года назад

I always thought I was absolutely terrible at soldering, who needs that flux junk anyway… Well when I realized what happens when you use flux it was like magic! I did the exact same routine as when I failed many times previously, but using the flux it just worked like magic

@Sameer2762 2 года назад

I just wanted to know about encryption, thank you for clearing. Regards

@phillipalbert8918 2 года назад

Great content, thank you!

@HamRadioCrashCourse 2 года назад

Thank you for watching.

@NathanMazanec 2 года назад

Josh, thanks for the demo and the little bit different video. I am not 100% understanding this, but I plan to go back to the other video you did to see what this is all about. De K1MAZ

@awesomedee5421 2 года назад

Duct Tape solves everything. Regarding the question about encryption, In LoRaWAN, AES256 is the encryption for both signing/authentication from end node to network layer and encode/decode from end node to application layer. That is considered very strong encryption. It seems to have been implemented in either Meshtastic/RadioHead by someone who wasn't confident on his implementation of the AES256, so if you need ultra-secure, you might want to look over the implementation. But I'm sure the NSA could break it. They don't tell you, else they'd have to kill you.

@Georgiaguntraining 2 года назад

Very informative.

@Highlander.7 2 года назад

this is badass. I think folks were genuinely confused about the fact it does not use wifi or cell service besides when you initially download the app.

@HamRadioCrashCourse 2 года назад

Yep. That is right.

@yandan8 2 года назад

Hi Josh. Really appreciate your out and about driving tests. Adds a lot of practical information. LoRa T-beam seems to be a “do it yourself Gotenna”?

@HamRadioCrashCourse 2 года назад

Thanks! Yes. It’s a diy goTenna with greater functionality though.

@nickmad887 9 месяцев назад

Thank you.

@troy3456789 Год назад

Very interesting!

@mikeofborg2 8 месяцев назад

I am a ham myself (W8MLD), and I find these fascinating. I may give this a shot. I wonder if they can use tropo or are the frequencies too high? Plus being spread spectrum I guess it might not work all that well. I will check Andrias’ video for more information. Thanks

@markusk4959 2 года назад

Great Video. One question, just to make sure I got this right. Every T beam works as a repeater for others, too. If I place one on my roof I could use this for my network but it would also improve the network for others by working as a relay station? And how many relays in a row can be used? Is there any limitation? Thanks and best regards from Germany.

@elpookay 2 года назад

great video 👏

@sumacmt 2 года назад

Excellent !

@threeqtrthrottle 2 года назад

Food for thought: The European band for this LoRa device is 433 mhz. Here in the states, that's inside our 70cm amateur band (420-450mhz). Why then, other than the technicality about encryption, couldn't we use that device into a repeater or an amplifier? As I see it, it's a data signal, so why not?

@thehumblefactory 2 года назад

"This is not a permanent solution, obviously :)..." aside at 4:15 earned my sub. I love me a "good enough" DIY project. Keep em coming!

@HamRadioCrashCourse 2 года назад

Hah. Thanks!

@borriskarlov8140 2 года назад

"line-of-sight" explanation could use a bit of revamp. (wavelength vs physical composition/geometry in path. Antennae directivity, etc.) Might be another video. Great Job !!

@presidentelectjerryodom3889 2 года назад

So I've been tested these for quite some time, so one thing I noticed is even know that the cross says that it didn't deliver the message when I look on my receiving phone at home base the message was delivered. I was told by one of the developers that you can't always trust the delivery mechanism.

@HamRadioCrashCourse 2 года назад

Yes! That was what happened in my case. The three mile message went through!

@presidentelectjerryodom3889 2 года назад

@@HamRadioCrashCourse obviously the downside of that is that if you're do have an emergency situation you don't know if the people on the other side of the emergency got your message or not, however we put in place a simple simple response to confirm the message was received.

@PatrickKQ4HBD 2 года назад

@@presidentelectjerryodom3889 that's called The Hostile Valley Problem. Lots of academics have worked on it.

@coreyjohnson6002 2 года назад

@@presidentelectjerryodom3889 if they did receive your message whether you knew or not, the chances of their message returning to you would be good, wouldn't it?

@ashisroy101 2 года назад

Controlling home appliances with this is the best project.

@TheEmeraldNight 2 года назад

Looking at using this camping. What antenna would you recommend for at Camp, on 4x4 and in backpack? With battery, can you install a larger one to last say a week out bush or do you think the addition of a solar panel would be better? Thanks From Australia

@KillerSpud 2 года назад

I ordered a couple to use as a dog tracker. I was thinking of using aprs, but this looks a little easier, cheaper, and more secure to do.

@WSallai 2 года назад

Mount it in a plastic barrel attached to its collar like cartoon Saint Bernard!

@markplain2555 11 месяцев назад

Excellent - is it possible to connect a much bigger screen. Perhaps even additional power to the screen.

@tjjavery 3 месяца назад

Just patiently waiting for the t-echos to be back in stock

@nighthawk1079 Год назад

There’s a lot of value in using this as a primary form of comm for a local group in a grid down scenario as it has some level of encryption. Then switch over to VHF voice if this UHF method cannot reach the distant end.

@AD6DMDennis 2 года назад

Master soldering dexterity 👌

@HamRadioCrashCourse 2 года назад

Thanks!!

@ingmarm8858 9 месяцев назад

G'day at 12:24 you say that is a frequency hopping spread spectrum system. LoRa modulation is a spread spectrum like technology in that the transmission is swept across the channel bandwidth. This give it a unique appearance in a waterfall display. LoRa and as far as I can see Meshtastics implementation does not use frequency hopping. I'm new to Meshtastic but as far as I've seen the frequency is determined when the "channel" is created isn't it? I heard that there was a massive crash of devices at defcon this year when a bunch of nodes started up :-)

@AndrewHall08 2 года назад

Since it has a detachable antenna, rather than mounting the entire module on the roof would it not beneficial to mount an antenna on the roof and run the coax into the house just like you would a radio antenna? And on that note, have you come up with antenna solutions for a vehicle so that you could have one full time in a vehicle?

@monitanator 2 года назад

Any recommendations on antenna upgrades for this device??

@ratherbyexploring4898 2 года назад

Can you do a video with some outdoor antenna options with maybe longer length/ waterproofness

@MarauderCustomWorks 7 месяцев назад

To revive an old video, just got 8.7 miles out of our t-beams last night. No relay nodes, just the 2 nodes that my buddy and i had

@cliftonbrown911 2 года назад

How about building a solar powered unit. Great content and presentation. Thanks

@esquire9445 10 месяцев назад

What’s the best simple way to communicate with a family member in another state during a grid down situation?

@awesomedee5421 2 года назад

I have a question if you think that this could be used in the woods to create a connection back to your vehicle's mobile radio by dropping a line of Meshtastic nodes along your trail just in case you need to write an emergency "help, I've fallen and I can't get up" message or for forestry firefighters to extend their range to send info back to their command center. I'm wondering if the "line of sight" could tolerate a few trees in the way. Are you in the mood to go for a hike? I'd be interested in some test results.

@thekingsbondservant 2 месяца назад

Looking for advice, Got a 60’ tower, Hoping to find antennas for,,, 50 watt ham GMRS repeater And Meshtastic repeater.. I’d like to set up tower first,, Send me to a video if it’s easier! Thanks Learning a lot!!

@NatorDM 9 месяцев назад

I'm sorry I have literally zero experience with this stuff, but this is really cool and I'm really getting into it but I just wanted to be sure... So theoretically I could have hundreds or thousands of these things spread out between my house, families houses (with their permission of course) not connected to wifi but on solar panels and batteries and barring any obstacles I can text send gps data... I'm curious as to the future and phone calls or sending images... for instance would having a strong or multiple systems right next to each other be able to send images or do phone calls? Also are there other devices that are LoRA but can handle more connections? Or are all of these devices really small. Again I'm just curious... and I have no effing idea lol. Thanks!

@cxsey8587 Год назад

You should check out the Recticulum network, similar concept and has some cool features regarding encryption and protocols.

@Scout339th 11 месяцев назад

Im curious like with FPV that you can improve the versatility by adding a left handed or right handed polarized antenna to all of your nodes if they would become more robust?

@5roundsrapid263 2 года назад

I’d put one in a tethered helium balloon (non-metallic, obviously). You could raise and lower it for the best signal.

@pb6839 2 года назад

Thinking of setting up a network of these in my city on rooftops with solar panels. Only question I have is if they need a lot of maintenance or could they just always be on and always working?

@AaronAlso Год назад

Pro tip: If you really need electronics to be waterproof, remove the board, mask off any ports or jumpers, ect and spray the whole thing down with silicone conformal coating. There are some caveats, you won't have easy access to the components again. In areas where the coating is thicker there will be more heat build up.

@s9josh778 7 месяцев назад

I removed the board. What do I do with the all these tiny pieces now? :D

@dougfields23 2 года назад

can different users utilize the mesh network or do these things only work within their scope or body of local users?

@andytosso7460 2 года назад

Is communication only from your Meshtastic device to another of your units (simplex) or will your messages get repeated by strangers until they reach their destination? If repeated, does one have to set up specific repeaters or will all the devices act as repeaters?

@jdcrunchman999 2 года назад

I would be more interested in knowing what the DB signal level is. This is more important to me. Can you somehow get that information from this device, or will it take special programming to get it.

@ke8mattj 2 года назад

Thank you for doing the range test. I'm still concerned with the application I want to do it for, since the homes we want to link, one of them is deep in the valley. Even though it is only one mile away, there's lots of vegetation and rocky terrain between these two points. So I don't think LoRA will work. It would be better if they just wasn't scared of taking the Tech. license since I can reach there with just my HT's, but it is what it is. FRS won't reach. It might just be GMRS then.

@dongreeard.greearmw477 2 года назад

A MURS radio would probably work well for your terrain, much better than FRS. I use the Retevis RT21V with a Nagoya 771 antenna.

@arjovenzia 2 года назад

this is an ideal use case for a mesh network. another node at the top of the valley could be used as a repeater. a camo case and a solar panel, nail it to a tree or something. they are cheap enough you could spread a couple around to really get some coverage.

@D3M3NT3Dstrang3r 2 года назад

@@arjovenzia came to say exactly this, thats the beauty of mesh. You can go as far as you would like depending on what you wish to spend on your own infrastructure.

@mikiemojo 2 года назад

Funny. First thing that came to mind when you said "off grid" was exactly what you described. The haters are actually "off balance."

@JustifyJustin 6 месяцев назад

So in essence, Lora devices are low powered wifi repeaters for a closed off network and you use a special app as your messenger to communicate between devices attached to the access points?

@HeSavesMankind 2 года назад

Can you go from node to node to node to node to node to extend range even further without having androids in the middle devices, or does each node require an android device?

@maxwellspeedwell2585 2 года назад

Dispatch is about sixty miles away. There is a 2500’ pass between us. LoRa a good option? If not, maybe 2 Meter? Or? What would people here recommend. I have terrible cell service, and can’t get a landline (too remote). Any ideas?

@thomast8539 2 года назад

With the current supply chain issues from China, how likely are we to see these devices get shipped and received in the US? Or do they deliver stuff like this via aircraft instead of container ship? Seems to me that anything from overseas is gonna be a real problem to get right now.

@PaulieShortcuts 2 года назад

I wonder if there’s a way to get a PirateBox on the network? Ive seen Alfa antennas used to connect devices for PTT and pi zero cameras.

@joeglennaz Год назад

Hello, thank you for this. Great video and Laura. Many other links you listed don’t work though. Can you update them?

@wtmayhew Год назад

Plastic is a dielectric material and can have mild to significant affect antenna characteristics depending on the plastic type.

@84swoodworth Год назад

Where did you get the batteries from do you have a link? Trying to fine some good ones

@JNET_Reloaded 2 года назад

I have a Lora LilyGo Shield 20191223 LILYGO® TTGO T-Higrow LoRa Shield 868Mhz / 915Mhz Function Expansion Board how can i use that without the grow crap its developed for and instead use it with esp 8266 for meshtastic?

@digitaldreamer5481 2 года назад

Josh, I was wondering, is there a number of words limit for each text message you send? I’m the net controller for the Skywarn Program for the National Weather Service office at the University of Hawaii-Manoa Campus here in Honolulu but at the same time, due to Covid19 restrictions, I’m asked to operate from home during hurricane season last year and this year. I have line to sight to the NWS office, it seems that I could relay messages directly to that office from my high rise condo. Is it possible to incorporate a wall wort instead of a 18650 battery in their office for this device? I suppose I would need to know how many volts and amps that would be required. Please advise. 🤞🏻

@djk8541 2 года назад

I can't find a how to but I have seen people build them as base stations with no battery or gps and powered by USB

@lonewolf2017 2 года назад

Hello Josh new to the Ham world and learning from your videos. Does the antenna on these LoRa devices factor into the distance? It uses SMA so it could be swapped out for a different antenna.

@HamRadioCrashCourse 2 года назад

Yes and yes. There are better antennas for these. But at higher frequencies keep the feed lines very short.

@lonewolf2017 2 года назад

@@HamRadioCrashCourse thank you. I have been curious about this system for a while. Thanks for putting the information out there in a user friendly format. Helps those of us who are just getting into radio.

@markaphillips14 2 года назад

What kind of lag time between message sent to message received? I’d be curious to see how this would do in a camping/hunting situation. Thanks for all the info.

@HamRadioCrashCourse 2 года назад

Seconds to a few minutes. But that depends on if your node is sleeping or awake.