© 1999 QRP2000 Design Team


VFO Hardware description

Written by Steve Farthing G0XAR

If you have a snails pace link to the Internet the circuit diagram may take a while to load

The VFO uses 2 AD9850 DDS Chips controlled by a PIC 16C84 microprocessor. Here is the circuit diagram (25KB) for the VFO..

and here is the parts list.

Hands Electronics will be providing kits and PCBs however you may wish to home brew your own VFO. We used VUCM for ours and it works OK.