#776 RF Demo Kit

Using the NWDZ Rev-01-10 RF Test Board with the NanoVNA.

Notes

The NWDZ Rev-01-10 RF Test Board is widely available from many sellers; I got mine from aliexpress for SGD$7.64 (April 2025).

It is designed for primarily for testing and learning how to use a vector network analyzer, such as the NanoVNA - see LEAP#767 for more on the NanoVNA.

RF Demo Kit Product Description

Package List:

• 1 x RF Demo Kit Board
• 2 x UFL Patch Cord

Test circuits:

• Pad 1: 30MHz low-pass filter
• Pad 2: 100MHz high-pass filter
• Pad 3: 433MHz band-pass filter (BPF)
• Pad 4: 6.5MHz notch/band-stop filter (BSF)
• Pad 5: 33Ω load SWR=1.5
• Pad 6: 75Ω load SWR=1.5
• Pad 7: Capacitor (C) circuit
• Pad 8: Inductor (L) circuit
• Pad 9: resistor-capacitor (RC) series circuit
• Pad 10: inductor-capacitor (LC) series circuit
• Pad 11: capacitor in series with parallel resistor-inductor (RLC) circuit
• Pad 12: resistor in parallel with series capacitor-inductor (RLC) circuit
• Pad 13: short
• Pad 14: open
• Pad 15: load (50Ω)
• Pad 16: through connection
• Pad 17: -5dB attenuation circuit
• Pad 18: -10dB attenuation circuit

Board front and rear:

Calibration

To calibrate the NanoVNA with the RF Board and connectors, I used the following procedure:

• set START to 10kHz, END to 500MHz
• choose CAL from the main menu
• choose RESET
• choose CALIBRATE
• connect S11 to the “14: Open” pad, press OPEN
• connect S11 to the “13: Short” pad, press SHORT
• connect S11 to the “15: Load” pad, press LOAD
• connect S21 to the “15: Load” pad, press ISOLN
• connect S11 and S21 via the “16: Thru” pad, press THRU
• press DONE

Tests

For the following tests, I am capturing the result with NanoVNASaver

Testing Pad 1: 30MHz low-pass filter

Testing Pad 2: 100MHz high-pass filter

Testing Pad 3: 433MHz band-pass filter (BPF)

Testing Pad 4: 6.5MHz notch/band-stop filter (BSF)

Testing Pad 5: 33Ω load SWR=1.5

Testing Pad 6: 75Ω load SWR=1.5

Testing Pad 7: Capacitor (C) circuit

Testing Pad 8: Inductor (L) circuit

Testing Pad 9: resistor-capacitor (RC) series circuit

Testing Pad 10: inductor-capacitor (LC) series circuit

Testing Pad 11: capacitor in series with parallel resistor-inductor (RLC) circuit

Testing Pad 12: resistor in parallel with series capacitor-inductor (RLC) circuit

Testing Pad 17: -5dB attenuation circuit

Testing Pad 18: -10dB attenuation circuit

Credits and References

• NanoVNA Filter Attenuator VNA RF Test Board Tester Demo Kit Module Breadboard Network Analyzer Universal Tool - aliexpress
• LEAP#767 NanoVNA
• NanoVNASaver

Video References

#517 NANOVNA RF Demo Board - IMSAI Guy

NanoVNA RF Test Board - RF Demos Kit - HAMTech RADIO SCANNER M0FXB CB DRONE HOBBY Diary