RigExpert AA-170

RigExpert AA-170

Price: $455.00

Model: RIG-AA-170
Manufacturer: Rig Expert Ukraine
Availability: IN STOCK
Warranty: 2 years

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RigExpert AA-170 – HF/VHF Antenna Analyzer (0.1 to 170 MHz)

RigExpert AA-170 is a powerful antenna analyzer designed for testing, checking, tuning or repairing antennas and antenna feedlines.

Mainly, these are SWR (Standing Wave Ratio) and impedance measurement instruments (vector impedance analyzers).

Easy-to use measurement modes, as well as additional features such as connection to a personal computer (to plot Smith diagrams, etc.), make RigExpert AA-170 attractive for professionals and hobbyists. It is quite important that graphical display of various parameters over a wide frequency range is a key feature of these analyzers which significantly reduces the time required to adjust an antenna.

The following tasks are easily accomplished by using RigExpert AA-170:

  • Rapid check-out of an antenna
  • Tuning an antenna to resonance
  • Antenna SWR and impedance measurement and comparison before and after specific event (rain, hurricane, etc.)
  • Making coaxial lines or measuring their parameters
  • Cable testing and fault location
  • Measuring capacitance or inductance of reactive loads

For the latest software updates, please refer to the manufacturer’s website

The following items are included with each RigExpert AA-170 order:

  • RigExpert AA-170 analyzer
  • User’s manual
  • CD with drivers and software
  • 3 x 1.5 Volt, alkaline batteries Type AA

Certifications: RCM (C-Tick), CE, FCC

RigExpert AA-170 Specifications

Frequency range: AA-170: 0.1 to 170 MHz

Frequency entry: 1 kHz resolution

SWR measurement range: 1 to 10
SWR measurement for 50 and 75-Ohm systems
SWR display: numerical or easily-readable bar
R and X range: 0…1000, -1000…1000 in numerical mode, 0…200, -200…200 in graph mode

Display modes:

  • SWR at single or multiple frequencies
  • SWR, R, X, Z, L, C at single frequency
  • SWR graph, 100 points
  • R, X graph, 100 points

RF output:

  • Connector type: UHF (SO-239)
  • Output signal shape: rectangular, 0.1…30 MHz. For higher frequencies, third or fifth harmonics are used
  • Output power: about – 10 dBm (at 50 Ohm load)


  • Three 1.5V, alkaline batteries, type AA
  • Three 1.2V, 1800…2700 mA•h, Ni-MH batteries, type AA (not included)
  • Max. 3 hours of continuous measurement, max. 2 days in stand-by mode when fully charged batteries are used
  • When the analyzer is connected to a PC or a DC adapter with USB socket, it takes power from these sources


  • 128×64 graphical backlit LCD
  • 6×3 keys on the water-proof keypad
  • Multilingual menus and help screens
  • USB connection to a personal computer

Dimensions: 22•10•3.6 cm

Operating temperature: 0…40 °C

Weight (including batteries): 400g

Screen Shots

Main menu
First page of the Settings menu
Second page of the Settings menu
“Show all” screen
Help screen for one of measurement modes
Frequency entry
Single-point SWR measurement
“Save to memory” screen
SWR graph
Multi-point SWR measurement
R,X graph

AntScope software

LCD2Clipboard software

AntScope software

AntScope is a program which is shipped with every RigExpert antenna analyzer. You may also download the latest version from the Downloads page of the RigExpert website (the program is included in installation CD packages). The screenshots listed below illustrate how capable this program is when the analyzer is connected to a PC. SWR (Standing Wave Ratio) plot:

Phase display:

R (resistance), X (reactance) and Z (module of impedance) display, series mode:

R (resistance), X (reactance) and Z (module of impedance) display, parallel mode:

Time Domain Reflectometer mode (except AA-500 and AA-520):

Smith chart:

How it works?

Structure diagram

The structure diagram of the RigExpert AA-170 Antenna Analyzer is located below:

structure diagram of the RigExpert AA-170 Antenna Analyzer

The “brain” of the analyzer is Atmel 8-bit RISC microcontroller. It controls two AD9834 DDS chips running at 80 MHz and generating two sinusoidal signals. Both signals are low-pass filtered and then put through pulse shapers, producing two rectangular signals with CML levels. Resistive bridge was chosen to measure parameters of a load because of its simplicity and good frequency response. The switch commutates two outputs of the bridge. After the switch, the signal is mixed with the second channel output to produce audio frequency of 1.5 kHz. A variable attenuator is used to maintain the audio signal level in the desired range. This signal is then filtered and fed into the 10-bit ADC of the microcontroller. There is a simple relationship between the measurement frequency, DDS frequencies and attenuator division ratio:

SubbandMeasurement frequencyDDS1 frequencyDDS2 frequencyHarmonic numberAttenuator ratio
10.1 … 30 MHz0.1 … 30 MHzDDS1 + 1502 Hz1/25
230 … 100 MHz10 … 33.3 MHzDDS1 + 501 Hz3/3
3100 … 170 MHz20 … 34 MHzDDS1 + 300 Hz5/1

The 128×64 graphical LCD and the 6×3 keys keypad are connected directly to the CPU. Also, the AA-170 is equipped with 512K of external Flash memory to store measurement results. The USB interface chip allows connecting the analyzer to the PC.

Close look at the bridge

This is a diagram of the resistive bridge and its connection to the mixer:

diagram of the resistive bridge

The switch which is controlled by the CPU feeds the signal from the certain side of the bridge to the mixer chip. When the load is totally active and its resistance is 50 Ω, the bridge is balanced and the switch outputs the same signal in both positions. This eliminates the need of calibration of the analyzer, also giving very good precision near SWR=1.

Comparison table of RigExpert antenna analyzers

FunctionAA-30 .ZEROAA-30AA-35 ZOOMAA-54AA-55 ZOOMAA-170AA-230 ZOOMAA-600AA-1000AA-1400
Frequency range0.06-30 MHz0.1-30 MHz0.06-35 MHz0.1-54 MHz0.06-55 MHz0.1-170 MHz0.1-230 MHz0.1-600 MH0.1-1000 MHz0.1-1400 MHz
Frequency entry step size1 Hz1 kHz
Min. sweep range100 Hz10 kHz
SWR2AIR™ mode+++
MultiSWR™ mode+
Reactance sign measurement+
Antenna connector typeSMAUHF (SO-239)type N
Output power+13 dBm-10 dBm
Output amplifierCMOS logic chip
Output signal shapesquare
Reference impedance for SWR measurement25, 50, 75, 100 Ohm50, 75 Ohm25, 50, 75, 100 Ohm50, 75 Ohm25, 50, 75, 100 Ohm50, 75 Ohm25, 50, 75, 100 Ohm
Analog-to-digital converter10-bit12-bit10-bit12-bit10-bit16-bit
Batteriestwo AAthree AAfour AAAthree AA
Battery voltage sensor+
Operation with external power supply (without battery)Ext. 5Vfrom USB
LCDMonochrome, 128×64Color TFT, 320×240Monochrome, 128×64Color TFT, 320×240Monochrome, 128×64Color TFT, 290×220Color TFT, 320×240
Time Domain Reflectometer mode– *Built-in
Flash memory for storing graphs10 memory slots100 memory slots10 memory slots100 memory slots90 R/X or SWR memory slots, 10 TDR memory slots
Multilingual supportEnglish only+
Presets for radio amateur bands+

Make sure the latest firmware is uploaded to the analyzer. See the Downloads section.

* The AntScope software is able to plot graphs in Time Domain Reflectometer (TDR) mode when AA-30/AA-54/AA-170 is connected to the computer. Since the resolution of the TDR graph is proportional to the maximum operating frequency of an analyzer, much better results are obtained by using AA-230 ZOOM, AA-600, AA-1000 or AA-1400.

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