 Hello and welcome and again this video is part of a series be sure to check out the full playlist there should be a link in the description and at the end of this video. And so far we have looked at doing Morse code, transmitting and encoding and decoding on our computer and we have also looked at using GUI interfaces for something called PSK31 which is useful but as I mentioned in the previous video I need something that is a shell application so I can pipe information into it and also pull information out of. So that's where this program comes in, Minimotem C. Morse code is just way too slow so we need something that does frequency shifting to send the information a little bit faster. PSK31 is an option I played within the past but again it's only GUI applications that I can find. But this program Minimotem which uses FSK, Frequency Shifting, I should have looked up before I did this video, something like that, Minimotem which is in your repository so I'm using Debian as I mentioned in the previous videos but I'm going to search for Minimotem and you can see I already have it installed because you can see this I right here. And that's what we're going to be playing with today. And again, I forgot to mention in the previous video with the Morse code I have example codes. Check out the link in the description which will bring you to my GitHub page which will have a few different example files that you can play around with. So let's go ahead and play with this Minimotem. And again, similar to the PSK this is going to sound like an old modem if you're like me and you live through the 90s you remember what the old modem sound like and that's basically what they were doing they were using audible tones to communicate with other computers and that's what we're going to be doing. So Minimotem and let's have a quick look at the man page here it tells you right here this is the command to transmit this is the command to receive and you can do different speeds and we're going to play around with this today. There's a lot of options in here we're just going to touch on the base of it. So what I'm going to say is I'm going to say echo hello world I'm going to pipe that into Minimotem dash dash TX and I'm just going to say 110 for our speed. Now you can change that and make it faster and definitely you can go faster than 110 and still get good results but the faster you go the more likely you are to get errors. So let's go ahead and give that a try it's kind of low let me turn up the volume a little bit on my computer here it's because it's playing through my headphones let me change that okay there we go there we go that's a good volume right there so you see we quickly transmitted hello world a lot faster than the Morris code and again you can pipe files into there let me see so here I can get out this address log which is just a list of addresses 30 or so of them and I can pipe that into our Minimotem command and we can say transmit 110 and it's going to go through and to go through this full list you know it isn't the fastest in the world but a lot faster than the Morris code so there you go that's a transmitting a file using a Minimotem so let's see how do you receive a file so basically the same thing we're going to use Minimotem let me clear the screen here modem and this time dash dash receive and we got to give it the same speed that we're transmitting at so there we go now it's listening and let me go ahead and open up my audio manager here you can see it listening here it's listening to my USB microphone I'm going to tell it to listen to my audio output on my machine that should be the right option there and now I should be able to transmit so basically I'm going to be playing this out through my speakers but this command up here is now being listening to my speakers so it's like it's I'm transmitting and receiving on the same machine but it's listening to it audio wise through my audio card let me go ahead and hit enter here so the first address got a little gargled there but the rest of the address that seems to be coming through fine and I think that's just you know the starting it just took a second for it to catch up there's a little static there at the beginning but you can count one two three four five so about five seconds per line here and again we can make it go faster but I find this being a reliable speed and again my original scenario here is as a firefighter in a pinch where we have no normal commutes means of communication through computers like we do during like a hurricane that we previously had we can get information out we can tell trucks this is the address this is the problem and send it out to all the computers and whoever's closest can pick it up or whatever but it's just you know three or four lines of information we can we need to send so in 20 seconds we get the information out and of course we can verbally send that to them but it'd be nice to have the computer output because that's what we have normally so you're not having to write everything down but as you can see this is very easily transmitted and in the first video in the series I showed doing that through walkie-talkies which will get more into that and other options in future videos so I'm just going to control see to kill that go up here and kill that so that's transmitting receiving get look in the link in the description this video bringing to a github page and so we have folders most for the Morse code right now and for the mini modem and so you can see we have some shell scripts here that basically just show you what I do so you can just go in here and say okay transmit run that and it's gonna start transmitted it's gonna tell you the command that it's running and it's gonna tell you some other options in here and same with the receive so go ahead check that out download that code download that program play with it and we're gonna get more into this in the next couple of videos so I do thank you for watching please visit filmsbychrist.com that's Chris of the K there should be a link in the description of this video and if you like my videos and want to support think about supporting me over at patreon.com forward slash melex 1000 there's a link to that in the description as well you can also support me through PayPal on my if you go to my films by Chris website there's a link there under support I do thank you for watching as always I hope that you have a great day