In this section, we are going to see how we can transmit and receive text messages using I got a phone
device, so the technology we are going to use is known as toxic, which is standard for Post Office
Code Standardization Advisory Group, also known as super toxic.
This technology is used in Radio Beijing to Beijing was a device which was very common before the cell
phones.
So these building devices were used to grassroot and receive text messages.
So we are going to use the same technology and we will transmit and receive data.
X data using had got it from device.
So Box X Support Zone numeric and alphanumeric data transmission boxes cannot transmit binary data.
So these are few important points which you can remember, and you can read further about boxing on
this beginning, which is provided over here.
And it has three speeds five one two beeps.
Twelve hundred beeps.
And twenty four hundred beeps.
So let's just keep that theory minimum.
And let's just focus on the practical of this thing, this technology.
So let me move into my dragon with machine.
We are going to use two different tools.
Jihad Mix-A-Lot and multi-model energy.
So these two tools are already available in Dragon with.
But if you are using Ubuntu or calisthenics, then you have to download these tools from GitHub and
also compile these tools for the compilation process is very easy.
All you have to do is you just have to run these commands to compile multi-month energy and the similar
process applied to John Mix-A-Lot.
So you have to compile these two tools.
But we are using Dragon with.
So we don't have to install or compile these tools, so let's just, uh, open these tools for let me
open my terminal.
Let me make it.
You can zoom and let me move into the directory, which is.
User SIRC.
Jia makes a lot.
And you have to go into examples.
And let's just who else.
So what are you going to see different examples, since this course is all about had got fun.
So our complete focus will be on out of one.
So we are going to use boxing.
V.X, underscore heck out of Dodge GRC to geography is the extension for going to radio, so we have
to open this file in going to radio.
So let me give you.
Your companion?
And then we have to give the name of.
The file.
So this is the cold which we will use to transmit data.
So first of all, let's just change the pager frequency, Woodhead.
So you can use the same frequency, but I'm just changing the frequency, so I'll make it.
Nine or eight guards, seven megahertz.
Right.
So this will be our transmitting frequency, and we are using the speed of light to what you can see.
So there are three different speed ratios, as I told you.
Five, one two.
Twelve hundred and twenty four hundred.
So we are going to use five one two.
And let's just take some message or what have?
So we will try.
Hello, world.
One.
And let's just do it right, Peter.
To.
Three.
For.
Let's just call it first message.
And Typekit will be starring.
All right.
That's just OK.
So this is our message, which we are going to transmit.
So we are going to transmit it on nine or 8.7 megahertz.
And this is our message which we are going to transmit.
So this is all about on prospect site and make sure your hat got in front devices also connected with
your with your dragon or this device on which you are transmitting that data.
Since I'm transmitting and receiving the data on a same system.
So my head got different device and ideal as the device is connected with the same system.
So for this particular practical, we need both the devices we need have got it fun as well.
As ideal as the two had got it, one will be used to transmit data and we will use it SDR to decode
and receive data.
Right to both of my devices, I connected with the same system.
You can use different systems as well.
But for the sake of this tutorial, I'm using the same system.
So this is all about on the transport side.
Let's just focus on the receiving side now.
So let me make it.
On the side, and let's just minimize it and to receive data, we will use GQ Ortex.
So let me open to you, Ortex.
And we will select the same frequency on which we are transmitting the data we are transmitting on nine
or eight point seven megahertz.
So I have just selected the same frequency over here.
All right.
Let me maximize it.
And the first thing which you have to do is you just have to go and configure the device.
So I'll just go.
And my ideal as they are dongle is already selected, so I'll just press, OK, and if you're using
some other device, then you have to select that device.
But I'm using so the ideal as they are dongle to receive data.
I'm just selecting this.
Okay.
And then you have to go into tools and remote controlled settings.
Overhead, you have to type a listening port, which is six double five three five.
You have to use the same board, which I'm providing over here, which is six five three five, right?
So this is the port on which we are going to listen to the data.
I'll explain it, this thing in a moment.
So right now, just you have to remember this old number on which you have to transmit the data from
GQ Ortex.
So you have to type the port number over here.
And all you have to do is you just have to add localhost over here, right?
So localhost is already added to let me delete this last option.
And all you have to do is you just have to press, OK.
And let's just select the correct frequency, which is nine, eight point seven zero zero zero.
Right.
And all they had on the right side in the.
Let me expand it.
In the and input control, you don't have to change anything.
And in the receiver's option, you have to select user and you have to create a filter bandwidth of
twelve point four.
Or you can select 13 as well.
Both work fine and then filter shape should be normal and more should be narrow FM band.
Right?
And then you have to click on UDP.
And you have to keep that after these settings similar.
You don't have to change anything in these settings.
So these are the settings.
On tactics, let me just again select the correct frequency, which is nine.
Eight seven zero zero zero.
So this is the frequency let in every way that you consume.
Thank.
And now all you have to do is you just have to open the terminal.
And let me make it a little song, and then you have to type this, come on.
So this is a complex.
Come on, let's just go this combined together.
It's not that hard, but you'll get this command in the in the resources files as well.
I'll provide this command, but let's just understand this command as well for what this command is
doing, we should know.
So we are starting get on our local host and we are using the port number six one five three five.
So this is the same port number which you provided over here.
And are remote control settings, right?
So we are listening the data which we are receiving in GQ, Ortex or this terminal.
Wait.
So we are using Typekit and we are using local host and this board, no to listen, and then we will
draft whatever the data we are getting and find this data.
Socks and socks will convert this raw audio data into some standard data.
What you can see, right and then pipe this data, this audio data into multi energy and then my team
on energy will decode this data using three different decoders, which is five one to twelve hundred
and twenty four hundred.
So these are three.
These are the three different speeds and decoders which we discussed in our slide, which is five one
to twelve hundred and twenty four hundred beeps, right?
So these are three different decoders, which multi energy values.
So this is the command.
So let's just start.
Uh, did you address first?
And we are listening to this, uh, frequency.
And let's just.
Run this command as well.
So this site is all set.
Now let's just Krasner data from our.
Gigantic, sorry from our radio.
So let's just play.
And let's just see this on our tech stop.
Call it.
New.
So you.
So we are listening to ninety eight point seven zero zero for let's just click on this play button to
crossword.
And what here we can see the frequency of major.
And here is our transmitted data.
So this was the string which we passed in our new radio, which is hello, one two three.
Hello, world.
Hello World one, Helloworld two, Helloworld three and Helloworld four four.
We received the same text message or here as you can see.
So this is how you transmit data and receive data using log SEG in heck out of one.