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The RSA306B and RSA306B-SMA are USB real time spectrum analyzers that use your PC together with Tektronix SignalVu-PC software to provide real time spectrum analysis, streaming capture, and deep signal analysis for signals from 9 kHz to 6.2 GHz. The design separates signal acquisition from measurement: the acquisition hardware connects over USB while data analysis, storage, and replay run on your personal computer, tablet, or laptop. Managing the PC separately from the acquisition hardware makes computer upgrades easy and minimizes IT management issues, all in a low-cost, highly portable package intended for field, factory, or academic use.
A spectrum analyzer measures and characterizes signals in the frequency domain, showing where energy sits across a band and how it changes over time. The RSA306B is positioned for academics and education; maintenance, installation, and repair in the factory or field; value-conscious design and manufacturing; and interference hunting. The 40 MHz real-time bandwidth combined with the processing power of SignalVu-PC is built to reveal transient and intermittent events that conventional swept measurements can miss.
ValueTronics stocks test and measurement equipment directly from our own 20,000 sq ft secure warehouse at 1675 Cambridge Drive in Elgin, Illinois. Every pre-owned unit is inspected and functionally verified in-house by our technicians before it ships, while new units ship factory-sealed exactly as received from the manufacturer. That combination of real stock, real handling of used equipment, and authorized new distribution is what separates us from listings with no accountability for condition.
The RSA306B family pairs compact USB acquisition hardware with Tektronix SignalVu-PC software to deliver real time spectrum and deep signal analysis from 9 kHz to 6.2 GHz. By separating signal acquisition from measurement and performing analysis, storage, and replay on your PC, the design lowers hardware cost and keeps computer upgrades and IT management simple, in a package built for field, factory, or academic use.
The family includes the RSA306B with a Type-N RF input and the RSA306B-SMA, a derivative developed with customer-driven enhancements that enable convenient integration within custom systems and enclosures. Both models share the same 40 MHz acquisition bandwidth and 9 kHz to 6.2 GHz frequency range, differing chiefly in connector type and mechanical configuration.
Each pre-owned model below is its own dedicated product page with condition-matched pricing. Choose the configuration that matches your connector and integration requirements—the Type-N RSA306B or the Type-SMA RSA306B-SMA—and each pre-owned unit is stocked and priced individually.
The RSA306B uses a Type-N female RF input and includes the black protective outer case, under which it carries MIL-PRF-28800F Class 2 environmental, shock, and vibration ratings for use in harsh conditions. It weighs 750 g (1.65 lbs).
The primary difference across the family is the RF input connector and mechanical packaging. The RSA306B provides a Type-N female RF input, while the RSA306B-SMA replaces it with a Type-SMA female connector and is offered either with the black plastic outer shell (SHELL) or without it (NO SHELL) for mounting the bare chassis in custom enclosures. A mounting kit (MKIT) with standoffs is available for the NO SHELL configuration to customers in the US and Canada only.
These configuration choices also affect physical dimensions and weight, and the MIL-PRF-28800F Class 2 environmental, shock, and vibration specifications are not guaranteed when the plastic case is removed, as on the RSA306B-SMA NO SHELL. RF performance—frequency range, 40 MHz acquisition bandwidth, and measurement range—is common across the models. See the comparison table that follows for the connector type, shell options, dimensions, and weight of each model.
| Model | RF Connector | Protective Case | Weight |
|---|---|---|---|
| RSA306B | Type N, female | Yes | 750 g (1.65 lbs) |
| RSA306B-SMA | SMA, female | Yes | 701.5 g (1.55 lbs) |
| RSA306B-SMA | SMA, female | No | 571.5 g (1.26 lbs) |
Additional differences in specifications beyond the few shown above are not listed here — see each model's full specifications below.
| Specification | Value |
|---|---|
| Frequency | |
| RF input frequency range | 9 kHz to 6.2 GHz |
| Frequency reference initial accuracy at calibration | ±3 ppm + aging (after 20 minute warmup at 18 °C to 28 °C ambient) |
| Frequency reference accuracy, typical | ±20 ppm + aging (after 20 minute warm up at -10 °C to 55 °C ambient) |
| Aging, typical | ± 3 x 10-6 (1st year), ±1 x 10-6/year thereafter |
| External frequency reference input frequency range | 10 MHz ±10 Hz |
| External reference input level range | -10 dBm to +10 dBm sinusoid |
| External reference impedance | 50 Ω |
| Center frequency resolution, Block IQ samples | 1 Hz |
| Center frequency resolution, Streamed ADC samples | 500 kHz |
| Amplitude | |
| RF input impedance | 50 Ω |
| RF input VSWR (typical) | ≤ 1.8:1 (10 MHz to 6200 MHz, reference level ≥ +10 dBm) (Equivalent Return Loss: ≥11 dB) |
| Maximum RF input level without damage, DC voltage | ±40 VDC |
| Maximum RF input without damage, reference level ≥ –10 dBm | +23 dBm (continuous or peak) |
| Maximum RF input without damage, reference level < –10 dBm | +15 dBm (continuous or peak) |
| Maximum RF input operating level, center frequency < 22 MHz (low-frequency path) | +15 dBm |
| Maximum RF input operating level, center frequency ≥22 MHz (RF path) | +20 dBm |
| Amplitude accuracy, 9 kHz - < 3 GHz (Warranted, 18 °C to 28 °C) | ±1.2 dB |
| Amplitude accuracy, ≥ 3 GHz - 6.2 GHz (Warranted, 18 °C to 28 °C) | ±1.65 dB |
| Intermediate Frequency and Acquisition System | |
| IF bandwidth | 40 MHz |
| ADC sample rate and bit width | 112 Ms/s, 14 bits |
| Real-time IF acquisition data (uncorrected) | 112 Ms/s, 16-bit integer real samples |
| Block streaming data | average rate of 224 MB/s |
| Maximum acquisition time | 1 second |
| Bandwidths | ≤ 40 /( 2N) MHz, 0 Hz Digital IF, N ≥ 0 |
| Sample rates | ≤ 56 / (2N) Msps, 32-bit float complex samples, N ≥ 0 |
| Channel Amplitude Flatness (Warranted, 18 °C to 28 °C) | |
| 24 MHz to 6.2 GHz | ±1.0 dB |
| 22 MHz to 24 MHz | ±1.2 dB |
| Trigger | |
| Trigger/sync input voltage range | TTL, 0.0 V – 5.0 V |
| Trigger level, positive-going threshold voltage | 1.6 V minimum; 2.1 V maximum |
| Trigger level, negative-going threshold voltage | 1.0 V minimum; 1.35 V maximum |
| Trigger impedance | 10 kΩ |
| IF power trigger threshold range | 0 dB to -50 dB from reference level, for trigger levels > 30 dB above the noise floor |
| IF power trigger type | Rising or falling edge |
| Trigger re-arm time | ≤100 μs |
| Displayed Average Noise Level (DANL) | |
| < 22 MHz (LF path), 100 kHz - 42 MHz | ≤-130 dBm/Hz (typical -133) |
| ≥ 22 MHz (RF path), 2 MHz - <5 MHz | ≤-145 dBm/Hz (typical ≤-148) |
| 5 MHz - <1.0 GHz | ≤-161 dBm/Hz (typical ≤-163) |
| 1.0 GHz - <1.5 GHz | ≤-160 dBm/Hz (typical ≤-162) |
| 1.5 GHz - <2.5 GHz | ≤-157 dBm/Hz (typical ≤-159) |
| 2.5 GHz - <3.5 GHz | ≤-154 dBm/Hz (typical ≤-156) |
| 3.5 GHz - <4.5 GHz | ≤-152 dBm/Hz (typical ≤-155) |
| 4.5 GHz - 6.2 GHz | ≤-149 dBm/Hz (typical ≤-151) |
| Phase Noise (1 GHz CW at 0 dBm, dBc/Hz) | |
| 1 kHz offset | ≤-84 |
| 10 kHz offset | ≤-84 |
| 100 kHz offset | ≤-88 |
| 1 MHz offset | ≤-118 |
| Noise and Distortion | |
| Residual spurious response, typical, CF 9 kHz - < 1 GHz | < -100 dBm |
| Residual spurious response, typical, CF 1 GHz - < 3 GHz | < -95 dBm |
| Residual spurious response, typical, CF 3 GHz - 6.2 GHz | < -90 dBm |
| Residual FM | < 10 HzP-P (95% confidence) |
| 3rd order IM distortion (CF 2130 MHz) | ≤ -63 dBc at reference level -15 dBm, 18 °C to 28 °C |
| 3rd order intercept (TOI) (CF 2130 MHz) | ≥ +13 dBm at reference level -15 dBm, 18 °C to 28 °C |
| 2nd harmonic distortion, typical | < -55 dBc, 10 MHz to 300 MHz, reference level = 0 dBm |
| 2nd harmonic intercept (SHI) | +55 dBm, 10 MHz to 300 MHz, reference level = 0 dBm |
| Local oscillator feedthrough to input connector | < -75 dBm at reference level = -30 dBm |
| Audio Output | |
| Types | AM, FM |
| IF bandwidth range | Five selections, 8 kHz – 200 kHz |
| Audio output frequency range | 50 Hz – 10 kHz |
| PC audio output | 16 bits at 32 ks/s |
| Audio file output format | .wav format, 16 bit, 32 ks/s |
| SignalVu-PC Base Performance Summary | |
| Maximum span | 40 MHz real-time; 9 kHz - 6.2 GHz swept |
Important: Maximum RF input level without damage: +23 dBm (reference level ≥ -10 dBm) and +15 dBm (reference level < -10 dBm), with a maximum DC voltage of ±40 VDC.
Important: The RSA306B requires a host PC and is not a standalone instrument: a PC with Windows 7, Windows 8/8.1, or Windows 10 64-bit operating system and a USB 3.0 connection is required for operation. 8 GB RAM and 20 GB free drive space are required to install SignalVu-PC. The PC is not included.
Important: For full performance of the real time features of the RSA306B, an Intel Core i7 4th generation processor is required; processors of lower performance can be used, with reduced real-time performance.
Important: Storage of streaming data requires a drive capable of streaming storage rates of 300 MB/sec; playback of recorded files at live rates requires storage with read rates of 300 MB/sec.
Important: Environmental shock, vibration and handling specifications are not guaranteed when the plastic case is removed (e.g. RSA306B-SMA NO SHELL).
Important: The MKIT mounting kit (for the RSA306B-SMA NO SHELL option only) is available to customers in the US and Canada only.
Important: The Panasonic FZ-G1 Toughpad/Toughbook tablet controller recommended for portable field use is sold separately and is available for purchase from Panasonic and third-party vendors.
This pre-owned unit is inspected and functionally verified in-house before it ships and is backed by our pre-owned warranty. To confirm its exact condition, firmware revision, installed options, or included accessories for your application before ordering, contact our Test Architects.
ValueTronics supplies both new and used test and measurement equipment. New units ship factory-sealed, exactly as received from the manufacturer; every used unit is inspected and functionally verified in-house at our 20,000 sq ft secure facility in Elgin, Illinois before it ships. Our Test Architects can help you select the condition, calibration, and configuration that fit your application.
Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.
Model No
Tektronix
Condition
Pre-Owned
Manufacturer
Tektronix
Spec_ana_freq
9 kHz to 6.2 GHz
30+ Years in Business
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30+ Years in Business
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Sell Test Equipments
Knowledgeable Staff
On-site Lab
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