This website has the world's first verified walkie-talkie project that doesn't use a coil. A walkie-talkie is a project that any electronics hobbyist would find to be incredibly interesting and attention-grabbing. Communication can take place even in the absence of a physical connection and within a range of up to 500 meters for mobile networks. The use of coil, which is included in nearly all communication equipment, might be challenging for electronics hobbyists. Therefore, not a single coil is included in the design of this circuit. The entirety of the walkie-circuit talkies may be broken down into its two primary sections: the transmitter part and the receiver section. The frequency of roughly 30 KHz is generated by the transmitter portion using IC NE566 (IC4) as a VCO, which stands for voltage control oscillator. For the purpose of determining frequencies, the resistor R24 and the capacitor C24 are both employed as frequency components. The mike (MIC1) picks up the speaker's voice and converts it into an electrical signal of the same value. The signal from the microphone is amplified by transistor T4, and the amplified signal is then sent to pin no. 5 of

integrated circuit IC4. The output from pin 3 of IC3 is completed by the NAND gate N1, which is controlled by the crystal oscillator XT4. Finally, the signal from NAND N2 through N3 and N4 is passed on to antenna in order to be transmitted. The signal that is transmitted from one walkie-talkie to another is picked up by the same antenna that is used for transmission. This is the receiver part. The received signal is amplified and strengthened by the field effect transistor T1, which is followed by transmission to the amplifier section, which is comprised of the transistors T2 and T3 and crystal oscillators XT1 through XT3. The detector part consists of a diode called D1, a capacitor called C6, and a resistor called R12. The detector component provides the frequency of thirty thousand hertz. Capacitor C9, resistor R17, and variable resistor VR1 are the components that work together to alter the frequency of the phase-locked loop IC NE565 (IC1). The signal is amplified by the amplifier IC LM386 (IC2) before being distributed to the speaker.

Resistors (all of them are 14 watts, less than 5% carbon). R1 = 47 KΩ; R2 = 100 Ω; R3, R4, R11, R27 = 2.2 KΩ; R5 = 330 KΩ; R6, R10 = 560 Ω R7 = 1 KΩ; R8 = 220 KΩ; R9 = 100 Ω; R12, R15, R16 = 4.7 KΩ; R13, R31 = 10 KΩ R14 = 15 KΩ; R17 = 1.8 KΩ; R18 = 1.2 KΩ; R19 = 1 KΩ; R20 = 4.7 Ω; R21, R22 = 100 KΩ R23 = 120 KΩ; R24 = 5.6 KΩ; R25 = 22 KΩ; R26 = 150 KΩ; R28 = 330 Ω; R29 = 220 KΩ R30 = 47 KΩ; VR1 = 4.7 KΩ; VR2 = 22 KΩ Capacitors C1, C6, C10, C24 = 1 KpF; C2, C4, C5 = 47 KpF; C3 = 20 KpF; C7, C9, C23= 2.2 KpF C8 = 4.7 µF/16V; C11 = 22 KpF; C12, C16 = 0.1 µF; C13 = 2.2 µF/16 V; C14, C19, C25, C26 = 0.22 µF; C15 = 10 µF/16V; C17 = 220 µF/16V; C18, C20 = 10 KpF; C21, C22 = 68 pF C27 = 1000 µF/16V; C28 = 10 µF/16V Semiconductors IC1 is a Phase Lock IC with the value NE565, IC2 is an Amplifier IC with the value LM386, IC3 is a Quad 2-input NAND Gate IC with the value CD4011, IC4 is a Voltage Controlled Oscillator with the value LM566, IC5 is a Voltage Regulator with the value LM7812, T1 is a BFW10, T2, T3, and T Miscellaneous XT1–XT4 equals a crystal with a frequency of 10.7 MHz; SW1 is a switch with a single pole and double throws; LS1 is an 8 speaker. MIC1 refers to a condenser microphone, and Areal refers to an