Transmitter of FM
This transmitter of FM owns an exit near 1 W with feeding of 12 V, which allows us to transmit to field abierto until approximately 1 km with a suitable antenna that can be a by telescope one.
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Resistance |
Capacitores | Semiconductors | Several |
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- R1 - 8.2 K ohms - R2 - 6.8 K ohms - R3 - 100 ohms - R4 - 4.7 K ohms - R5 - 22 ohms |
- C1, C6 - 100 nF - C2 - 10 nF - C3 - 220 nF - C4 - 10 pF - C5 - 22 nF - C7, C8 - Capacitores variable |
- Q1, Q2, Q3 - Transistor 2N2218 |
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The coils are all done with wire common, or varnished of 1 mm, in diameter of 1 cm. L1: 4 turns; L2: 5 turns with central and put in taking to L1; L3: 8 turns with central taking; L4: 4 turns.
Note: Legal restrictions with respect to the use of this type of apparatuses exist. Because this transmitter has relative a great reach recommends the mounters to consider these restrictions.
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