Is a digital display of the frequency readout useful?
The 300CD, 320CD, and 350CD provide a 5-digit digital readout of the frequency. Display resolution is reported in Hz with a 1 second update time, or in 1/10th Hz with a 10 second update time. With the 320CD, only the outermost frequency is reported. The 300C OEM systems do not come with the digital display, but it can be added to either version A (with the addition of several wires and a DPDT switch) or version B (no modifications or additional parts necessary). The part number for the display is 300F.