RSA306B USB Spectrum Analyzer

RSA306B USB Spectrum Analyzer

The RSA306B USB spectrum analyzer might be small but it packs a big punch. It’s loaded with features you’d expect from spectrum analyzers twice the size and twice the price. Perfect for everyday tasks.

Maximum Frequency Range

9 kHz to 6.2 GHz

Capture Bandwidth

40 MHz

Dynamic Range

-160 dBm to +20 dBm


See more with proprietary DPX® technology


Discover the most difficult, hard-to-find problems with the powerful real-time architecture of the RSA Series. With the advanced DPX® technology, you can see RF characteristics that are practically invisible to a conventional spectrum analyzer.

Powerful and intuitive. Measurement insight at your fingertips.


The RSA Series is powered by SignalVu® Essentials software – the same software used on the full-line of Tektronix Real-time Spectrum Analyzers. Delivering unlimited access to advanced measurement and analysis capabilities that you can save, customize or share with peers. Over 15 packages cover common wireless standards, spectrum management, pulse measurements and more.

Performance with no compromises.


The RSA Series provides performance to match conventional mid-range spectrum analyzers on the market. No compromises are required for even your toughest challenges.

Unequaled size. Unlimited flexibility. Unparalleled toughness.


At just 1.6 lbs., the RSA306B is conveniently sized for easy portability from your bench, the lab or even the field. It's powered by your laptop or tablet giving you the ultimate flexibility and convenience. You choose the display and connectivity that you prefer. Additionally, the RSA306B is tested to military standards and is field tough.

Watch the Extreme Test

Meet the Whole Family


The Tektronix family of Spectrum Analyzers are all made in the USA and have a 3 year warranty so you can count on our quality day in and day out. Choose the real-time spectrum analyzer that best suits your needs:

  • RSA500 Series: With a built-in tracking generator for antenna and cable test, and a GPS receiver to geo-locate and map signals, the RSA500 makes field test a lot easier.
    Learn More>>
  • RSA600 Series: With better dynamic range and phase noise for modulation analysis of wireless standards, and an optional tracking generator to characterize RF components, the RSA600 offers powerful tools for your bench.
    Learn More>>



Model Frequency Range Real-Time Bandwidth Minimum Event Duration for 100% POI SFDR (typical) List Price
RSA306B 9 kHz to 6.2 GHz 40 MHz 100 μs 60 dBc Configure & Quote
Frequency RangeReal-Time BandwidthMinimum Event Duration for 100% POI
9 kHz to 6.2 GHz40 MHz100 μs
SFDR (typical)
60 dBc

Spectrum Monitoring and Interference hunting

The migration to mobile communications is creating unprecedented pressure for more spectrum capacity in a complex and crowded signal environment. Tek’s Real-Time Spectrum Analyzers help you discover and examine sources of interference quickly so you can locate and identify unwanted activity. You can ensure your signal integrity and adherence to compliance standards using the RSA306B, RSA500, or RSA600 for real-time spectrum insights.


  • The RSA306B spectrum analyzer's proprietary DPX technology enables precise, real-time measurements packaged in a portable, rugged form factor and easy-to-use software interface.
  • The RSA306B spectrum analyzer covers up to 6.2 GHz, with 40 MHz bandwidth capture

Reduce manufacturing costs and test time with better test flexibility

The USB RSA’s are a great choice for manufacturers looking for greater throughput and product quality, all while controlling testing costs. The RSA 306B, 500, and 600 units offer support for major Internet of Things (IoT) standards in SignalVu-PC software, come with a complete offering of drivers and code examples, and include testing support for IoT technologies such as WiFi and the new Bluetooth 5.0.

Maximize your student’s learning

With our full featured and affordable Real-time Spectrum Analyzers, your students can capture results of experiments, perform analysis, and generate lab reports on their laptops, saving time and optimizing learning opportunities. It’s compact and portable size makes it easy to conduct experiments away from the lab in real world environments. 

EMI/EMC pre-compliance Testing

Save cost and precious time by performing pre-compliance testing in your lab with our Real-Time Spectrum Analyzers. You can use peak detection with a free version of SignalVu-PC. You also get more accurate results with quasi-peak and average detection.

Model Frequency Range Real-Time Bandwidth Minimum Event Duration for 100% POI SFDR (typical) List Price
RSA306B 9 kHz to 6.2 GHz 40 MHz 100 μs 60 dBc Configure & Quote
Frequency RangeReal-Time BandwidthMinimum Event Duration for 100% POI
9 kHz to 6.2 GHz40 MHz100 μs
SFDR (typical)
60 dBc
N9322C (BSA)
N9000-507 (CXA)
Maximum Frequency Range9 kHz - 6.2 GHz9 kHz to 7.5 GHz9 kHz to 7.5 GHz9 kHz - 7 GHz9 kHz - 7.5 GHz
Capture Bandwidth40 MHz40 MHz40 MHz1 MHzStandard: 10 MHz
Optional: 25 MHz
Dynamic Range
(DANL to Max Imput)
-160 dBm to +23 dBm-161 dBm to +33 dBm-161 dBm to +33 dBm-152 dBm to +20 dBm-148 dBm to + 15 dBm (Optional Pre-amp On)
Phase Noise (1 GHz CF, 10 kHz offset)-84 dBc/Hz-94 dBc/Hz-94 dBc/Hz-90 dBc/Hz (typ)-102 dBc/Hz
Real Time CapabilitiesYesYesYesNoNo
Base Measurements171717610
Country of OriginUSAUSAUSAMalaysiaMalaysia
Warranty3-year warranty3-year warranty3-year warranty3-year warranty3-year warranty
Weight1.6 lbs7.0 lbs6.35 lbs17.4 lbs34 lbs
Size (h, w, d)1.2" x 7.5" x 5"2.65'" x 11.78" x 10.68"2.95" x 14.12" x 8.75"5.2" x 15.7" x 12.6"7" x 16.8" x 14.5"

SignalVu-PC software brings benchtop and field features to the RSA306B


RSA306B operates with SignalVu-PC, a powerful program that is the basis of Tektronix performance signal analyzers. The software controls the spectrum analyzer acquisition and updates measurement displays continuously.

The base version ships free with the product; add options to configure the software for your application.


  • Free base version has 17 signal analysis and real-time spectrum analysis measurements
  • Paid add-on options for more than 15 advanced measurements including WLAN testing, P25 compliance testing, pulse analysis, modulation analysis and more



Panasonic instrument controller with SignalVu-PC


When combined with a Tektronix USB spectrum analyzer, the Panasonic FZ-G1, offered by Tektronix, transforms your view of the spectrum in the field. It provides the largest screen of any portable solution and weighs but a fraction of a traditional portable spectrum analyzer.


  • Pre-loaded with SignalVu-PC software
  • Custom-programmed display settings and front-panel buttons optimize the SignalVu-PC experience
  • Tektronix-tested to meet the real time performance of all USB spectrum analyzers


Smart antenna for interference hunting


When combined with a Tektronix USB spectrum analyzer, the Alaris DF-A0047 direction finding antenna, offered by Tektronix, makes interference hunting easy. Lines of bearing are automatically transmitted from the antenna to SignalVu-PC Map software, enabling fast triangulation on interference sources.


  • Multiple antennas and a user-selectable preamplifier cover a broad range of interference frequencies and levels
  • Integrated compass transmits angle information to SignalVu-PC for automatic creation of lines of bearing on the map
  • Powered by USB


Conducted and Radiated Emissions Testing

Literature number: 37W-61324-0
Application Note 02 Mar 2018
Spectrum Analyzer
RSA306B USB Real Time Spectrum Analyzer Datasheet The RSA306B uses your PC and Tektronix SignalVu-PC™ RF Signal Analysis Software to provide real time spectrum analysis, streaming capture and deep signal analysis capabilities for signals from 9 kHz to 6.2 GHz, all in a low-cost, highly portable package…
Literature number: 37W-60375-6
Datasheet 27 Feb 2018
SignalVu-PC Vector Signal Analysis Software - V3.13.0072
SignalVu-PC VSA software brings the analysis engine of the Tektronix Real-Time Signal Analyzer (RTSA) to your computer, enabling you to analyze live signals from RSA306, RSA500, RSA600, RSA7100A Spectrum Analyzers and MDO4000B/C Series oscilloscopes, and…
Part number: 066143417
Application 21 Feb 2018
How do I tell if my RSAxxx has successfully connecting to my computer?
Watch the USB status LED when you first plug in the USB cable. See actions below: Note: When you first connect the USB cable to a PC USB 3 port (for the first time) this light may be red for up to up to maybe one minute as the USB driver is installed on…
FAQ ID: 251136 02 Feb 2018
The Green LED on my RSAXXX is on, but I cannot connect to SignalVu-PC?
After installation of SignalVu-PC and the Tektronix USB driver, I cannot get the instrument to be found with SignalVu-PC. Note: The first time connecting to the instrument may require up to 30 seconds for SignalVu-PC to find the instrument. Subsequent…
FAQ ID: 251141 02 Feb 2018
How mobile Network Operators use Tektronix Real-Time Spectrum Analyzer
The tutorial describe more in detail how the RSA306 is being used in the field.
How-to Guide 01 Feb 2018
Low-cost EMI Pre-compliance Testing Using a Spectrum Analyzer
Learn about pre-compliance testing for the wireless standards and if you need it.
Literature number: 37A-60141-2
Application Note 29 Jan 2018
SignalVu-PC Error 1722 After Installing SignalVu-PC
There can be several reasons for the 1722 error.  The most common are:   1. In Dot Net 4.5 or greater installed?  If not try installing Dot Net 4.5 or higher.   2.  If you have Dot Net 4.5 or greater try repairing Dot Net Framework 4.5 on Windows 7 PC…
FAQ ID: 72236 25 Jan 2018
What PC should I get to work with the RSA306?
Any PC that meets the performance requirements should work.  Tektronix doesn’t make a specific recommendation, but a list of models we’ve evaluated is shown below.  In one case, we’ve found an Intel core i5-based tablet (Surface 3 Pro) that does meet…
FAQ ID: 69416 01 Dec 2017
Interference Hunting Application Note
In this application note we'll provide an overview of interference finding techniques and offer examples to help your interference hunting efforts to be more successful. 
Literature number: 37W_60877_0
Application Note 20 Oct 2017

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