The G1OJS firmware hosted on this site provides the following key updates:

• Power meter mode (mV RMS and dBm)
• VFO mode with power level control
• New calibration routine
• Auto-step VSWR scan with 1kHz resolution
• Cable Length measurement video
• 0.1 ohm display resolution for values of R,X,Z below 10
• Revised capacitance and inductance calculations and displays

Please click on the menu buttons below the picture of the LCD display to explore the new features, or click on the links above it to read about the theory and the development of the firmware and to go to the downloads area.