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Walkie talkie

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Sumit Kumar
Sumit Kumar

In this ppt you will know about walkie - talkie and its uses , advantages ,why walkie talkie used ,block diagram of walkie - talkie and circuit description of walkie - talkie, which will helpful to you for presentation and also you can improve your knowledge.

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Walkie Talkie By Sumit kesharwani
fig. Walkie-Talkie
Block Diagram Of Walkie-Talkie
Need Of Walkie Talkie • Cell phone technology is advance but they are helpless without a network. • Speaker of walkie talkie is much louder than the speaker of cell phone. • In walkie talkie there is no need of dial a number each time. • By using walkie talkie two are even more people can talk even if the are miles apart from each
Simple FM Walkie-Talkie • The principle used in it is same as the walkie- talkie. • Each device contains one transmitter and one receiver. • Transmitter of one device will be sent in a low FM range (88-95 MHz) and the other will be tuned in high FM range (103-108 MHz).
FM Transmitter With a matching antenna, the FM transmitter circuit shown in fig. can transmit signals up to a range of 2 kilo meters. Using a battery for powering the circuit will reduce the noise.
Fig. circuit diagram of fm transmitter • Assemble the circuit on a good quality PCB. • Frequency can be adjusted by varying C9. • The circuit can be powered from anything between 9 to 24v. • L1 =10 turn/0.5mm SWG25 d=3mm, L2=12 turn/0.5mm SWG25 d=5mm, L3=4 turn/1.2mm
FM Receiver
Uses Of Walkie-Talkie • Walkie-talkies are used in traffic. • Walkie-talkies are used in military. • Walkie-talkies are used in sports. • Walkie-talkies are used in trips. • Walkie-talkies are used in office.

More Related Content

Walkie talkie

  • 3. Block Diagram Of Walkie-Talkie
  • 4. Need Of Walkie Talkie • Cell phone technology is advance but they are helpless without a network. • Speaker of walkie talkie is much louder than the speaker of cell phone. • In walkie talkie there is no need of dial a number each time. • By using walkie talkie two are even more people can talk even if the are miles apart from each
  • 5. Simple FM Walkie-Talkie • The principle used in it is same as the walkie- talkie. • Each device contains one transmitter and one receiver. • Transmitter of one device will be sent in a low FM range (88-95 MHz) and the other will be tuned in high FM range (103-108 MHz).
  • 6. FM Transmitter With a matching antenna, the FM transmitter circuit shown in fig. can transmit signals up to a range of 2 kilo meters. Using a battery for powering the circuit will reduce the noise.
  • 7. Fig. circuit diagram of fm transmitter • Assemble the circuit on a good quality PCB. • Frequency can be adjusted by varying C9. • The circuit can be powered from anything between 9 to 24v. • L1 =10 turn/0.5mm SWG25 d=3mm, L2=12 turn/0.5mm SWG25 d=5mm, L3=4 turn/1.2mm
  • 9. Uses Of Walkie-Talkie • Walkie-talkies are used in traffic. • Walkie-talkies are used in military. • Walkie-talkies are used in sports. • Walkie-talkies are used in trips. • Walkie-talkies are used in office.

Editor's Notes

  • #5: Tx freq-(89-85) Mhz, Rx –(103-107)Mhz