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iPod FM Transmitter

2016-04-10 06:08  
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iPod FM Transmitter

 

iPod FM Transmitter

 


Here are instructions for building your own ipod FM radio transmitter. It works quite easy, there is a power switch on the bottom to turn it on and tune your radio and transmitter to the right frequency. For the antenna you can use a copper wire of 70 cm. The range of this FM transmitter is about 100 to 150 meters (500 feet). With R5 you can adjust the input signal and with C6 you can tune your frequency. Transmitter is supplied by 9V battery.


iPod FM Transmitter

iPod FM Transmitter parts list:

Transistor:
T3 ...............................2N2219a
Capacitor:
C3 ...............................1 μF/16 V
C4,C5 .........................1 nF ker.
C6 trimmer capacitor...4-40 pF
C7 ...............................10 pF ker.
Resistor:
R5 Trimmer.................10 kΩ
R6 .............................. 10 kΩ
R7 ...............................2,7 kΩ
R8................................1 kΩ

Spool L1:
Use a 10 cm long Silver wire.
The diameter inside the spool should be 3 mm.
7 winds total
Length of the spool should be 15 mm (f-g)
The antenna is connected to the spool at 3mm from f

a: 9volt
b: ground
c: audio in
Ground your audio input to b
For the antenna you can use a copper wire (70 cm)
With R5 you can adjust the input signal and with C6 you can tune your frequency.





































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