A FAST TUNING HF DDS SYNTHESIZER
The aim was to produce a DDS controller with minimum hardware, that would offer a good linear tuning rate at 10Hz steps.The project uses an AD 9850BRS from analog devices, an industry standard two line LCD display, two PIC16F84ย�processors to manage the DDS and display, an optical shaft encoder and a pair of MMIC amplifiers to generate up to +10dBm to drive a diode ring mixer.
   A FAST TUNING HF DDS SYNTHESIZER
Full details on www.g4gxo.cwc.net

 
 
 

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