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 Amateur Radio RF Measurements: Antenna Analyzer
 3-60MHZ Antenna Analyzer: AAZ-0217A: USB and BT

A Project by:

Tony / I2TZKFrank / K7SFN , Dinesh / VU2FD

This project is upgraded to AAZ-0217MX


AAZ-0217A: 3 to 60MHZ Antenna Analyzer

AAZ-0217A is a simple single board USB Antenna Analyzer using Si5351 signal source generator chip and a return loss bridge, for measurement by a Log Amplifier AD8307

This Revision :

1. Uses Si5351 as a signal Generator. Lower freq limit to 3MHZ as strong harmonics below 3MHZ may not be suitable for measurement. Upper limit of 60MHZ restricted by LPF.

2. Dual, auto power select option: PC use or Portable use

3. Optional Bluetooth module (HC05): Activation function auto selected when module  inserted into FRC16 Socket.

4. Project uses Si5351 chip on a plug in module which is supplied fully assembled and tested for kits.

5. Technically restricted to upper limit of 60MHZ but FW/SW is capable of generating 160MHZ. Similarly, lower than 3MHZ available but with poor results. 

6. Expansion socket (FRC16) is for future use of a Bluetooth add-on module or a WiFi Module, with necessary changes in FW. Supports RX/TX and I2C + External Power input.

A PC program for WIN7/XP is available for AAZ-0217A. Works well with WIN10 too but may require user to set necessary permissions for WIN10 OS. Latest dotnet update is essential for your WIN OS. 

Firmware V1.02 and Software V 1.02 for AAZ-0217A is developed by  Tony/I2TZK.

A free metal case is supplied with kits/assembled.

USB Antenna Analyzer AAZ-0217A:

Click to enlarge

  Si5351 Module:( Details )

Click to enlarge

 AAZ-0217A:  Tech Information Documents


AAZ-0217A Tech info document 0-500MHZ RF Sensor Document
AAZ-0217A Schematic   
Schematic B: PIC18F2550 JPG
Schematic A: Gen+RLBridge  JPG
AAZ-0217A Kit Parts List 0-500MHZ RF Sensor Document
AAZ-0217A FAQ 0-500MHZ RF Sensor Document
 Previous AAZ docs useful for this version too

AAZ Troubleshooting Guide by Frank/K7SFN 0-500MHZ RF Sensor Document
Kit Building Guide by Frank/K7SFN 0-500MHZ RF Sensor Document
AAZ Testing Guide by Tony/I2TZK 0-500MHZ RF Sensor Document
 AAZ-0217A Firmware, Software and  Update Document
PIC18F2550 V1.02 FW


Android APK V1.08 for BT- Not implemented in FW yet


 Active AAZ Kits
Antenna Analyzers



1:1 RF Transformer AD9850
AMS1117 AMS1117
AO4405/AO4407 AO4405
PIC18F2550 PIC18F2550
BFG541 0-500MHZ RF Sensor Document
2N7000 2N7000
Si5351 AD9850
PCA9306 AD9850

  Visit I2TZK Website for Firmware and Software

Visit I2TZK Web Site

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