SECRET UNDERGROUND MESSAGING

Lilygo T-Deck (868Mhz for EU, 915Mhz for USA)
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[@PenryMMJ]

This is a security announcement: If you see a couple of suspicious looking Herberts messing around with strange looking Blackberry messengers on the tube, it's probably just Andy and Lewis

[@andykirby]

😅😅😅

[@DonzLockz]

What the hell is a Herbert?

[@cplcabs]

@@DonzLockz basically a mischievous kid verging on a scrote.

[@dennis8196]

​@@DonzLockzin some regions it can be used to mean nonce but most areas it's just a scruffy dodgy person.

[@mostlymessingabout]

​@@DonzLockz train spotting Northerners 😂😂😂

[@Dave64track]

These devices have some great potential especially if more and more people get into this sort of thing and setup a mesh around towns. This keyboard version looks pretty cool piece of kit keep up the great work.

[@laurahaaima1436]

If everybody used it, we would have global coverage.

[@andykirby]

There's lots using already😁

[@johnkoury1116]

@@andykirby That is fantastic !! Than you for bringing this information..

[@JRP80820]

Enjoyed this video reminded me of early 1990's, me and my mates used to go out on our bike's around Portsmouth and use CB radio handhelds to communicate and test out distances we could send radio messages. Good days.👍🎙️📡📻

[@OhYeah-qx9qn]

You guys in the UK have all the fun! 🙂Thanks for all your great videos, from Arizona, USA

[@CaptZenPetabyte]

The only thing I think would improve these (specific) units, is a history of the conversation so that you can have the functionality of the conversation the same as the mobile ... I know thats difficult with the memory size and processing etc. but it would make a huge difference to their practical use. Great video boys

[@TheKendalCrew]

There is a store and forward functionality in development - you do also get richer experience when using a paired smartphone app

[@yamez69]

When using with a Bluetooth connected device, conversation history is preserved, as well as confirmation of sent message. The T-Deck devices in this video are still under development.

[@floydlholt9829]

Storing messages create security issues.

[@BertRedd]

This device should have enough PSRAM to store recent convos. It also has an SD card slot.

[@stuartjohnston7364]

Ive not missed the sound of the northen line.... Christ that took me to some memories 😂 ace equipment Andy, loving this content!

[@andykirby]

I know, what a racket. Glad I'm not up there often!

[@justiceforall8574]

You guys really are the next level in radio communication so inspiring,You guys deserve the cult status following that you have earned.Thankyou so much.

[@andykirby]

🙏🏻🙏🏻🙏🏻

[@paulsengupta971]

@@andykirby Do people often call you a cult?

[@TheGrimDark]

⁠​⁠@@paulsengupta971 How dare you question our Lord Of The Radios (LOTR for short), praise be to our Meshtastic Messiah @andykirby 🙏

[@paulsengupta971]

@@TheGrimDark 🙂 I figured this Meshtastic stuff was being part of the Borg. Resistance is futile.

[@CalvinCarlo]

@@paulsengupta971Hope you don’t mine me asking; What are you referring to when saying “Borg”?

[@Hungry_Hunter]

So exciting... Meshtastic dogging up next... Coor blimy.

[@MyTube4Utoo]

Meshtastic - My latest addiction. 😆

[@alainbroekema5000]

Andy and Lewis you are the perfect duo for doing allkind of experiments !

[@TechWithMarc]

I remember ages ago Cybiko's were released that worked on a similar idea, if enough people had them it would create a massive mesh network, I LOVE the idea of anything like this

[@ch716]

I’m loving these radio videos. Not much Meshcom or Meshtastic in the states yet, but I’m intrigued and will be ordering some soon.

[@robertmeyer4744]

That was really good. love when you two play radio. love the spot at the end. nice spot to play radio. 73's from the USA !

[@64offsuiter]

Would love to see the same tests with bigger antennae.

[@tonyross7376]

Good stuff Andy 🤜. Tune is banging 👍

[@DonzLockz]

Awesome and glad that security didnt pull you in for questioning. 😊

[@marcuscoleman198]

Awesome testing thank you

[@FNUKSTER1366]

Another awesome video Andy and Lewis ❤

[@ka4dqe606]

Enjoying your channel. Thanks. Subscribed. Cheers

[@keekdachoseone7]

This was a great collaboration both are my favorite from Uk area thank you for the great content

[@p1366]

Awesome! interesting tests!

[@nigelsheridan6229]

Great video guys, Have a grand Christmas.

[@buckeyeblaster]

Great video! These little devices have plenty of potential.

[@JDT-19933]

Awesome content as always

[@topklassphotography]

nice tune Andy

[@W4TRI]

I think a ham club could take 10 of these with high gain antennas an cover a city with good placement. Hope to find out one day.

[@memediatek]

The networks slow down over 15 nodes or so unfortunately, but it sure is possible

[@robertburdoff1789]

Lewis looking genuinely happy - never seen that before, lol! Great job guys, keep up the good work.

[@RingwayManchester]

What’s that supposed to mean?! 😂😂😂😂😂

[@snakezdewiggle6084]

Andy. Antenna orientation, body / hand proximity. Christmas, yeah ! Cheerz.

[@stephendonkin5497]

Enjoyed this 👌

[@g-r-a-e-m-e-]

Cybikos had similar abilities. They allowed propagating messages through a network and also could allow access to the Internet if one was set up as a server. Or CB walkie talkies would work well.

[@anarchytelevision8445]

I love this out of the box thinking when it comes down to communications, we all need a way worldwide to communicate with each other through audio, text or video off of "their" infrastructure and system, we need our system.

[@EddieTheH]

We've had 2-way radios for many years now, this is a very niche device.

[@anarchytelevision8445]

@@EddieTheH I've been experimenting with television transceiver using analog television frequency

[@RiverMersey]

Last week, I received 6 of the much cheaper - and smaller - HelTec v3 units that can also run MeshTastic for experimental purposes. Most MeshTastic units can be paired to a cell-phone which in turn runs an app that can provide delivery notifications. All MeshTastic software is open source, however, the LoRa radio remains proprietary. At best, a mesh can be up to 80 units in size and provide a total data through-put of about 50kbps. For an underground station, that could be plenty-enough to provide a text data route from the platform to the surface for most users. Your video is a great demo of what can be achieved - and what should be provided - in an underground railway environment - especially if only for emergency services

[@JohnBaxendale]

Most places in the world have cellphone coverage on their underground systems, the UK is a bit of an oddity in that respect. Even the channel tunnel now has full cell coverage for the entire crossing :)

[@paulsradiohacks]

cant wait to get mine, looks so much fun.

[@skeveharvey]

“I sent him a dodgy msg.. now I’m just waiting for his to come through…” 😭🤣🤣🤣me w the homies

[@wisteela]

Absolutely awesome.

[@m7trsradio]

Great times had. I would like to see the delivery report too. Anyway Merry Christmas to you. 73

[@midclock]

I think that the 433Mhz version may reach further distances. I didn't test that, it's just an assumption. Btw the Lilygo T-deck is a cool device, not too expensive either (lcd, keyboard with trackball, battery ready). I think that I'll get one soon or later 😊 Cheers

[@DarrenPoulson]

Technically it will reach further (can go through walls, etc. easier), but as its used in so many commercial devices then the interference will be higher.

[@iambhav]

Great little test! Reminds me of the Blackberry devices and BBM

[@andykirby]

Yeah BBM... wow!

[@chrisultrabeatuk]

Love the music at the end 👀

[@WindyJAMiller]

Reminds me of my Cybico extreme back in the early 2000's

[@Trevvie70]

Merry Christmas Andy and Helen hope you have a good one and looking forward to new material in the new year,.

[@andykirby]

Thanks mate! Happy Christmas!👍🏼

[@nigelgunn322]

You're just having too much fun with this Meshtastic stuff.

[@ryank5tar]

Great experiment. now to drop repeaters through the tube

[@paleogeology9554]

I know to you guys its normal but I live in the Sonora desert of Arizona in one of the hottest places on earth. Today in only 6/3 its already well over 100 degrees. I was blown away to see how dark it was there with all that fog, Id imagine you guys spend alot of time in doors? Out here its sunny about 350 days a year, the only fog we get is during Monsoon season when these massive storms roll across the desert. Its really truly aww inspiring to see the sheer power of God. Ive been looking into trying lora devices to use as a com system in several of the Turquoise mines I own, ( My hobby and former career was engineering ) I was hoping lora could be used with repeaters in the tunnels so someone on the outside can still have comes with my workers down below but im not so sure this would work without a bunch of repeaters idk? I do know theres a similar system out there that uses wrist band coms for miners to keep track of them underground but they wanted 50K for each arm band for the men and 250k for my unit that acts as a sorta base station. Frankly small mine owners like myself cant afford these crazy prices however I see how valuable this could be during a cave in or someone lost underground which does happen so ive been trying to figure out a system like lora. Any suggestions would be MUCH appreciated!!!

[@NickoD]

I just came to say that Imparare is a complete banger! Also, a t-deck is for sure in my future purchases. 73 Andy!

[@andykirby]

Thanks mate👍🏼👍🏼😁

[@SVENY]

I know I'm watching some good shit when the amen break is playing in the background.

[@KarlHobson]

Looking forward to new devices coming along, be nice to see a rugged two way radio type device on 868mhz or a nice case for these devices that your using, looking forward to setting a repeater up in IO93HP utilising some of my Helium network equipment and antennas......really enjoyed your video Andy/Lewis Best Regards from Wakefield West Yorkshire

[@lecrab]

Nice one. I saw these for sale, I wonder, do they also connect to the other meshtastic reveivers?

[@chrissewell1608]

You two popped on and off the train, like Harry Potter. 😂

[@TechAirSpace]

I just made a video about T-Deck. I'm loving it! Meshtastic is amazing.

[@4X4-RADIO]

Made me think about the Motorola Talkabout I had in 2001/2 ~ 2 Way Paging with Mini Keyboard, not much bigger than regular pager

[@g1fsh]

Merry Christmas lads

[@spencereagle1118]

Great stuff. This tech must be driving the spooks at GCHQ potty.

[@wisteela]

I can see them setting up devices to intercept the messages.

[@barrylarryharry7183]

Andy, would you be able to post links to all the bits to make this please?

[@tech-rich]

Impressive range for non line of sight!

[@Bond2025]

Some frequencies behave differently in different ways in different locations. For example, UHF is better in built up areas for local communications, VHF better for out in the open. 4m 70MHz is outstanding when it comes to the way signals travel compared to 2m and 70cm! You also find that only certain frequencies work for cave rescue too, or certain frequencies can be heard underground better than others. RF is fascinating to experiment with as you can also try different types of aerials etc. In a tunnel the signal will bounce around and reflect off the walls. A bit more power would help.

[@outbackmotorcyclesandengin867]

Hi guys, that was very interesting. The fact that it worked at all was impressive. What units were you using? I think more people would be interested in getting something that just works instead of having to use a phone as the interface and have to set it up. It's OK for us radio ham types, but most people will struggle with it.

[@ThatMattWhite]

It's the Lilygo T-Deck. As you can tell, the firmware still has some work to be done, but the hardware is basically ready-to-go. Just needs a battery for power.

[@madcarew5168]

Ordered one a week ago,Bangood..thanks for demmo 73......

[@yamez69]

Surprised no cell/mobile coverage on a London line. In Australia, NSW we mostly have major city coverage on urban underground lines, via directional antennas. T-Deck is not fully functional yet. Long/Slow channel setting has had minimal testing. 3dBi dipoles antennas would be better perhaps. I'm assuming RX gain boost is on. Nice video. Merry Christmas!

[@The45thClown]

There is a bit, think currently 2/3 of platforms. About half the tube stations are actually above ground so always had service. Currently only 20% of the station platforms actually underground have coverage and this is expanding.

[@stewartstewartstewart]

There is EE wifi

[@Tmm42s]

Interesting, in Australia we have 3G 4G 5G in all our tunnels. Trains use GSM-R, And emergency services use P25 which is our “PSN” network in NSW and I believe trains also runs their own P25 or DMR network 6 types of networks in all the tunnels But the newest lines are driverless but still have GSM-R

[@barrieshepherd7694]

The Sydney Metro driverless trains don't use the GSM-R system they have TETRA. Note the Sydney GSM-R uses 1800 Mhz unlike the system in the EU and UK which is on 900 Mhz.

[@RGCbaseace]

NICE thoes are my next thing to try

[@meyemediauk]

intrigued

[@over-engineered]

you should build Heltek V3’s or similar into hats (maybe ex. WW2 tin helmets) with antennas on top, then use your phones as terminals, such fun!

[@4X4-RADIO]

There are so many different Technical developments going on, but like many of them, "Solutions" waiting for a "Problem" to solve. Bit like the 100's of Linux Distros, if only all these Devs had collaborated, on a few variants, Linux could have taken on Windows

[@jimbles5071]

Hi Andy. Could you make a video with the (Tr)uSDX and experiment with different anntenas?

[@PeterJavea]

HI Andy This is getting very interesting to me here in Belgium. I've searched for an answer but can't find anyone asking: why dont these units have some kind of back cover? Or am I just stupid...? The testing and videos are ready good. Thanks Do i understand that 433 and 863 Mhz are the legal EU frequency units i should buy Peter in Brussels Belgium

[@thefenrisianssweatshop]

That a T deck? I needs me a bucket of them.

[@Lugeix]

Are you going to test hilltop to hilltop? or hilltop to building?

[@AndrewJonesMcGuire]

Definitely want to get into meshtastic but that firmware would drive me crazy! That bit at the top saying when the message was received would frustrate the hell out of me, because I wouldn't know if the last message really was 29minutes ago, or as was often the case in this video 0m ago, but the timestamp just didn't update 😐

[@andykirby]

Yeah its early days, it's developing every day.

[@JohnBaxendale]

This is just the T-Deck, if you use the app or another device that's not the case - it's a fast developing project though.

[@ClickClack_Bam]

Why couldn't you just post the time sent in the message itself if that's important to you?

[@AndrewJonesMcGuire]

@@ClickClack_Bam first, that comment was a month ago, and the firmware has had multiple revisions since then. And second, I've been using meshtastic myself since that comment was posted. Third, I'd likely almost exclusively be using the app rather than the device itself, so what is being shown on the device's screen isn't that important to me and finally fourth, the entire interface is getting a massive upgrade sometime in the future - as the various sneak peek videos show.

[@0bscura]

All these video make me want to try meshtastic. Do they all have Bluetooth to connect to your phone?

[@gchengrpt]

This is awesome! I have tried using the T-Deck "simplex" to a second T-Deck with Meshtastic but I guess I keep getting the settings wrong. Love to know your setup.

[@andykirby]

Just default settings, see my setup video for meshtastc, it's a couple of videos back.

[@Sylvan_dB]

And if you stash a few little meshtastic boxes around in various trains and stations you might be able to get a signal thru the entire system. Of course, power and keeping the boxes from being nicked are a challenge.

[@Mcsqw]

I feel like stashing mysterious boxes of electronics in public places might be just a tad frowned upon by the police and security services...

[@ItsDeffoScott]

​@@McsqwMaybe being surrounded by armed officers on his knees is his kink

[@randygraham]

Are you using a super thin case or just holding the battery in back of the naked board ?

[@DaveF8]

Is the configuration of the T-Dec via smartphone the same process as used on the Heltec?

[@lbarnett748]

Looks like a new music production device. A Pollyend tracker micro version of the mini. Aha. 😂

[@carl6589]

The Stockholm tube have great reception so we don't actually need this but it is still cool.

[@125f8]

So the question is, can you get gps for it ? I have one on the way from aliexpress, is there more updates coming from Meshtastic?

[@NihilisticHatred]

Is that the standard t deck?

[@AliciaSykes]

Pretty cool! When the message hasn't yet delivered, does your device keep retrying until it's received? Does the other device need to respond with anything for it to know once it's received? (sorry if that's a n00b question, I'm just looking into Meshtastic for the first time now.)

[@SteveBerwick]

It seems like the answer is a 'no', however, there may be a setting to confirm messages sent.

[@AliciaSykes]

Thanks @@SteveBerwick :) If there's no way for the other device to confirm receipt, wouldn't your message just get lost to the void if you were temporarily out of range?

[@andykirby]

The protocol has delivery reports baked in, they retry if a message fails to deliver, these are the first kind of stand alone devices but The meshtasic app that works with these devices over Bluetooth has many many features.

[@ClickClack_Bam]

So the phone app integrates with all of the other Meshtastic devices that are set up to receive that message right?

[@HighWealder]

What are you two doing so far south? Have you got visas?

[@SteelWolf13]

Well at least we have some sort of range Ideas. AND... 2 months ago: Lilygo T-Deck and Meshtastic - Encrypted Comms- The Comms Channel kzbin.info/www/bejne/Z6DEiIWpZ9mYbJo

[@doingitmyself7168]

Try the same Experiment, with 5 watt uhf transcievers. So you can see how far the signal can travel 😉

[@AG-en5y]

Neat

[@Embassy_of_Jupiter]

I never do this. My local security agency can confirm this, as they have never caught me doing this. They are very mad about my apparent lack of transmissions, that is very real and radio silent.

[@ddouglas3687]

Excellent trial! Now, give it 4-5watts of power and encryption!

[@TheKendalCrew]

It is encrypted!

[@andykirby]

It has ~150db of link budget you don't need a lot of power. 1W at the very most.

[@garenkarapetian709]

Once they offer a more-or-less ready product (with switchable GPS, Telegram/WhatsApp like GUI and Contacts book) and a decent battery, I'm definitely getting one. Otherwise doesn't make sense to have that huge screen. I can see this becoming a thing in London. Next thing you'll know they'll stigmatise LiliGo users - kinda like cash users, antivaxers, crypto users, etc.

[@AndrewTSq]

I would love to see one of these devices but with a raspberry pi zero as the main computer, and using t he esp only for radio. would up the price with like $10, but would be so much worth it.

[@andykirby]

You can do it with a PICO but you need the LoRa radio board (waveshare)

[@26TM034]

with the new licence changes maybe hams could set up their own web... like the packet /aprs net of old... mesh frequency on say 144.850 /750 or and 70cms.. using milliwatts.. etc but with a nodes up high roof top nodes in a town.. maybe something for the future.

[@phillipsmiley5930]

theres a messenger mode available for modded Quanshang K5, use them on any of those frequencies

[@andykirby]

You don't need a license to do this like we were on 868Mhz, anyone can join in the fun.

[@paulsengupta971]

There are also 433MHz versions of these things.

[@lmaoroflcopter]

Hamnet exists already. It has done for yonks. Just do that.

[@mutestingray]

Only one can bring me down is the clerk at Moncler

[@Antney946]

Is that Lewis Ringway??

[@UnReal31337]

The Home Office is going to come knocking

[@benayers8622]

not if theres too many adopters

[@butterbean4195]

these are great new toys.. has anybody made over the pond contacts yet?

[@MyIronman8]

Good Lord that other guy is smart as hell that would be someone you would have want on your team

[@paulsengupta971]

Lewis? Of the RingwayManchester channel?

[@NatesRandomVideo]

Don’t UK cell carriers know what microcells and Radiax are? Lol.

[@straightsilver420]

Can you do a video of building a meshtastic repeater

[@andykirby]

All devices repeat, but yes you can put one in a box at the top of a mast with a larger antenna.

[@dredfxcustompaint]

👍

[@phil2768]

I don't know much about radio/mobile signals, but what is there to stop normal mobiles phones with Bluetooth, WiFi, 5g capabilities, etc. being utilised (hacked?) to work as a peer to peer based mesh network somehow. I guess the ranges might be smaller but everyone has a smartphone with these network capabilities so the mesh network could potentially be a lot more densely populated.

[@andykirby]

It's possible but bluetooth and wifi was never intended for super long range, fine if you have lots of devices close by you could use Bluetooth LE. LoRa is better for this purpose though, that's why it works so well.

[@gazzat5]

I've long considered spoofing the Wi-Fi they have at the stations on the train with a captive portal that plays Rick asterleys never gonna give you up and maybe some jokes and a chat board to make people smile (or hate me lol)

[@mostlymessingabout]

What's that Northern doin down Souf 😂

[@stevesummersell3068]

Pretty cool!