Today I will show you how to make a TV transmitter. Some of them are already making FM transmitter but this is the first article on making the TV transmitter in Bengali blogging and you are 100 percent sure that you can make the TV transmitter.

More than 1 year ago, I tried to make a TV transmitter. But after several years of inconvenience and due to lack of time, I did not look any further. I got a lot of enthusiasm from April 30. Later on, I succeeded in last two days.

Keep in mind that we will not create new circuits. We will convert ourselves into a TV transmitter with a very large number of circuits used by ourselves to do the connection.

What is needed to produce TV transmitters:

• An RF BOX
• A 5-volt power supply.
• Need some wire.

Where to get RF BOX?

RF BOX: The function of the RF box is to convert the data received from the VCD player into a radio frequency. It is used on the VCD Player.

Where to get the RF BOX: RF box you will probably not get in the market. Because now it is not used anymore. It will have to manage you from an old VCD player. The next VCD player will be available in the Electronics Maker store or in the old market. Check out how to see the RF box.

This is the RF box. RF Circuit. But in VCD Player you can not see it in this situation. Because it is covered with a plate of tin. Run it in a VCD player.

This is the main circuit. You can see RF Circuit when the lid is drawn from the red mark space. The RF box is attached to the original circuit with 5 pins. You must carefully remove the circuits with the RF box from the original circuit with the help of sealing irons. There is a need to look at the circuit.

Let's see how to do the connection

Notice that there are 4 pins on the left side of the RF Circuit. Let's see if any of these works. 1st input of the input of the pin, the work of the second pin is 5 volt DC input, the input of the 3rd pin and the video 4 pin Ground. If you have trouble, see the image below.

Power Supply:

In the above image, you will be able to supply power in this circuit through some pins. You can use transformer or battery as a power supply. However, if you use a battery as a power supply, you will get better results than the transformer. For making 5 volt power supply, IC 7805 can be used.

Audio and Video Input:

You can use the DVD player to give audio and video input to this circuit, ie RF Circuit. I have used the DVD player. I can also use other devices which have video and audio out lines. Two of the video cable with it and you just use the signal tie. See the image below.

Antenna Connection :

On the right side of this circuit, you will see a pin that has been pulled out of a leg of 104pf. Adding some hands as an antenna will place it on the other end of the wire. See the image below.

If you can connect properly, your TV transmitter, your own TV channel will be ready. 😛

Television tuning:

Now tune your television. See VHF brand new channel. Let's talk about your channel. Now tell the neighbors, about the new channel you have created. 😛

Audio and Video Adjust:

If you see only the video playing on your television, the audio can not be heard or vice versa, then the RF Circut's blue color variant capacitor rotates with the screwdriver. When you get the audio and video in two, do not rotate the variable capacitor. .

Signal Transmeter Range :

I will not tell you how far your TV transmeter will deliver your broadcast. You will see it. However, how to broadcast your broadcast 1 kilometer distance and then write one day later.