5W Chinese PLL FM Transmitter With LCD Printed Circuit Board (PCB)

Posted on Jun 1, 2012

Here's PLL FM transmitter circuit from china. This circuit uses the familiar 2SC1971 for final power amplifier stage. The PLL controller of the FM transmitter use SAA1057 and PIC16F628 (download HEX file).

5W Chinese PLL FM Transmitter With LCD Printed Circuit Board (PCB)
Click here to download the full size of the above Circuit.

If want to change the active component, here's the list: 2SC2458 = BC547 2SA1048 = BC557 2SK192 = J310 2SB562 = BD136, BD138, BD140 2SC1923 = BF199 of BRF91 2SC1923 = BF199 or BRF91 2SC2053 = BRF96 2SB1135 = BD136, BD138, BD140 MV2105-09 = BB105, BB119 Printed Circuit Board (PCB) for this FM transmitter circuit is 155 mm x 120 mm. All coils are 0.8 mm copper wire with a 6 mm diameter. Please see parts used from schematic.

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