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.

1. Walkie Talkie
By
Sumit kesharwani

2. fig. 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

8. FM Receiver

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.