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PLL Synthesizer Module
Posted on Monday, April 14, 2008   •   Category: PLL Circuits


PLL Synthesizer module is an add-on based on SA1057 and PIC16F84 that converts any existing FM Transmitter into stable rock-solid PLL transmitter. Frequency is selected through 8-DIP switch. PLL Synthesizer board will also require a 100K resistor and varicap diode such as MV2105 or MV2109 to control the frequency of the transmitter's oscillator.


50MHz - 1400MHz PIC-PLL
Posted on Wednesday, April 2, 2008   •   Category: PLL Circuits


This circuit is a programmable synthesizer for various transmitters with PIC16F84, TSA5511 and 2x16 LCD display. Features of PLL module include generation of frequency from 50MHz to 1400MHz with 50KHz steps and viewing the display from 0 to 1900MHz for RX and TX modes.


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