 This video is a disclaimer video. I recently just finished up a series on transmitting Information through the airwaves using mini modem and I want to point out because there was some concern in the comments One I am not a lawyer and I am also not a licensed ham radioist So take everything I've said And everything I'm about to say with a grain of salt so first off a lot of people are concerned about The the legality of me transmitting information like that over radio waves and it all depends on you know What frequency you're doing and what licenses you have now if you were to take a CB radio or most walkie-talkies and transmit from one To another using digital signals. Yes in the United States that would be illegal now in the case of one of my videos I use a little FM transmitter now I built a big FM radio tower and transmitted across the county that would be illegal You need to get a license for the frequency you're going to be transmitting on But the the little dongle I had the little transmitter Which transmits on FM channels that your car would pick up? Only transmits a couple of feet and although the FCC Regulates how that device is made it since it doesn't transmit more than a couple of feet You're allowed to transmit so I don't think there'd be any legalities Issues when I'm transmitting that information I'm only transmitting a couple feet which again is impractical for the scenario But it was just an example I gave just show that you can transmit over the airwaves now there are radio frequencies that you can transmit on up to a certain distance that you don't need a license for like 433 megahertz or 315 megahertz which is a lot of you little devices around your house may run on like all my lights are controlled on those Frequencies and you don't need a license for that. They don't go very far And you're I'm transmitting a digital signal through that but there's digital signals being transmitted through the airwaves all the time with a Little USB dongle you can pick up Signals coming from planes flying overhead that are just transmitting out So it all depends now in the scenario that I was giving I was giving an example of the fire department and a time of emergency Transmitting data like that and in the past there have been ham radios to have helped the fire departments I remember back in 15 years ago or so with Katrina and stuff that the fire department north of us I knew some guys who were licensed ham radios and they were helping You do radio stuff now. I don't know what they were doing But they had licenses and I'm sure that they would know legal ways to transmit during emergency times if we need to transmit digital audio digital information So yes, be very careful, but my example was just a theoretical scenario and to show you that you can transmit data Through audio waves, whether it's across the room with a microphone and speaker Or through a recording on a voicemail. It was all just examples of doing the same thing different ways Also, let me bring up a lot of people were bringing up different protocols I was using mini-mode and people were worried about error correction and using other protocols that allowed for error corrections such as Z modem or x modem or y modem. They were the problem with those with error correction is that in most those cases you have two-way Communications I send you a bit of information. You reply back. I go. Yeah. Yeah, that is what I said blah blah blah back and forth In my theoretical scenario, that's not practical What we're trying to do in my scenario is just blast out the information to everybody because you might have a hundred trucks driving around Trying to pick up the information and we don't have time enough frequencies or time to transmit back and forth Over and over again. So there is no real error correction I mean you could transmit everything twice and compare it, but even then if they don't match up There's no way to tell the server that sends it out that They didn't match up. So you just have to look at them both and go. Okay. This looks like the correct one We're not transmitting binary files like images or xcubal files. We were transmitting plain text ask key characters So if a character character gets dropped here or there, it's not a big deal Yes, we were talking about transmitting addresses if you drop a letter in the name of the street It may not be a big deal You drop a number a digit it may or may not because you know in your area If this road has four digit numbers and you're only getting a three-digit number that that may not be right Also, the error correction in my scenario is we're still going to be doing audible voice dispatch so I say Engine 24 you're being dispatched to one two three pine Street for a stroke, but we also send that out digitally The digital thing is just in case you missed something over the radio. It's like, okay Oh, they weren't what was the address so you're double checking So that is kind of your error correction there again It's a theoretical time of emergency Scenario so anyway, just want to touch on those things again Yeah, like I said there were concerns about transmitting through airwaves all depends on what you're transmitting the frequency Transmitting what licenses you have that sort of thing So definitely look into that thing more my main point of this was the software that allowed you to do that What how you transmit it is up to you. I do. Thank you for watching I hope you enjoyed that series and originally the whole Original thought on that series was to communicate through two cheap computers like a raspberry pi and something else I never did that I might do a follow-up video where I just basically redo what I did but just use a raspberry pi But I have a lot of other videos I need to get to so I do thank you for watching and I hope that you have a great day