Ramsey Electronics AR2WT Manual page 15

being "imposed" on the VCO. It also provides some amplification to give the
VCO 0-12V of tuning from a 5V PLL part.
Block K. The microcontroller is the "brains" of the entire project. This device
programs the PLL to get the frequencies desired, handles the jog dial by
interpreting it's pulses, and then writes the data to the displays. Quite a bit of
coding is required to handle the scanning functions and the user interface, so
don't underestimate what goes on inside this little device!
Block L. This is the display and the user control devices.
Block M. Power supply section.
AR2 • 15