AD9850 DDS Signal Generator 0-55MHz For HAM Radio SSB6.1 Transceiver VFO SSB

Features This is a 0 55MHz DDS Signal Generator It is based on AD9850 chip and is very easy to operate Supports 0 55MHz continual adjust at 1Hz step Input 12V Sellers Note We are also providing a simplified version with input 8 9V With direct digital input frequencyWith audio volume potentiometerWith amp gain potentiometerWith AGC potentiometerS LED displayStanding Wave LED displayKeysConnection interfaces ENC Encoder switchMEM Switch for memory modeVFO Transfer from VFO A to VFO B or from VFO B to VFO A SSB Working mode change circulate from USB LSB AM CW and on and on RIT Fine tuning to receiving frequencyCAL Set functionsKB 1 and KB 2 have common shared pin but is not GND How to operate Press CAL power on then we enter setting screen Let go release CAL A ENABLE 6XREFCLE setting chip clock mode adjust frequency encoding setting AD9851 set to 6 multiply frequency AD9850 set to 1multiply frequency Press CAL then quickly release to enter next step B B DDS SYSTEM CLK Chip working frequency setting Use encoder switch to adjust value Operate in accordance with STEP key AD9851 set at oscillator 6 multiply channel AD9850 set at actual output of oscillator Press CAL then quickly release to enter step C C MIN RX DDS FREQ Setting minimum working frequency Use encoder switch to adjust value and in accordance with STEP key Press CAL then quickly release to enter step D D MAX RX DDS FREQ Setting maximum working frequency Use encoder switch to