Aaronia SPECTRAN® V4-C Handheld Spectrum Analyser | 9 kHz–6 GHz

Aaronia SPECTRAN V4-C — Handheld Sweep Spectrum Analyser, 9 kHz to 6 GHz Key Specifications at a Glance Parameter Value Frequency Range 9 kHz to 6 GHz (1 Hz resolution) IF Bandwidth 20 MHz Frequency Accuracy ±1 ppm DANL (High Sensitivity Mode) −160 dBm/Hz @ 1 GHz Attenuator Range 0 to 50 dB (1 dB step) Internal Amplifier Gain ≥30 dB Maximum Safe Input Level +20 dBm (amplifier off) IIP3 +14 dBm (typical) Phase Noise −100 dBc/Hz @ 1 GHz, 100 kHz offset ADC 14-bit Dual ADC DSP 150 MIPS Hardware Filter DDC (Digital Down-Conversion) RF Connector N-type, 50 Ω USB Interface USB Type-C Display 5.5 inch, 720 × 1280 px Operating System Android Storage Approx. 10 GB GNSS & Compass Built-in (standard) Battery Lithium, 7.4 V / 5 Ah Operating Time Approx. 3 hours Operating Temperature −5°C to +50°C Dimensions 215 × 95 × 55 mm Weight Approx. 900 g Specifications from Aaronia Technical Datasheet dated 16 March 2026. Subject to change. Confirm with The Debug Store for the latest revision. Features and Functions Spectrum Analysis and Spectrogram The SPECTRAN V4-C delivers comprehensive spectrum analysis modes from a single handheld unit. Channel Power measures the total power within any user-defined spectral bandwidth. Occupied Bandwidth (OBW) measurement captures up to 99% of a signal's power. Adjacent Channel Leakage Ratio (ACLR) provides pass/fail data critical for cellular and wireless compliance testing. NdB Bandwidth displays resolution bandwidth on a logarithmic scale for accurate narrowband signal characterisation. The integrated spectrogram mode enables engineers to visualise frequency-versus-time history, making intermittent interference events clearly visible even when they are missed in a single sweep. In North American documentation, this mode is sometimes referred to as a waterfall display — the same function applies here. Digital Persistence Signal (DPS) DPS mode separates the desired signal transmission from underlying low-level interference with high clarity and without requiring service interruptions. By accumulating signal density over time, DPS reveals transient or low-duty-cycle signals that would be invisible in a standard max-hold or average trace, making it particularly effective for diagnosing sporadic interference in busy RF environments. High-Sensitivity Preamplifier The internal low-noise amplifier delivers a gain of ≥30 dB, reducing the displayed average noise level (DANL) to −160 dBm/Hz in high-sensitivity mode at 1 GHz. This enables reliable detection and measurement of very weak signals such as UAV telemetry, IoT uplinks, and spurious emissions that would be below the noise floor of a standard handheld instrument. The amplifier is disabled when measuring high-power inputs to protect the input stage; the maximum safe input is +20 dBm with the amplifier off. Interference Localisation (Optional) The optional direction-finding capability combines the built-in GNSS receiver, electronic compass, and angle-of-arrival (AoA) triangulation algorithm to pinpoint interference sources geographically. The user takes measurements from multiple test points; the instrument's AI algorithm automatically analyses direction-line reliability, excludes outliers, and converges the probable interference source location to an adaptive area of approximately 200–1,000 metres in diameter. An audible tone-approach search mode provides real-time audio feedback as the engineer moves towards the source, with pitch and level increasing as signal strength rises. Coverage Mapping and Spectrum Monitoring Using the integrated GPS module and the onboard electronic map, the SPECTRAN V4-C can perform outdoor signal coverage mapping and spectrum compliance surveys. Results are recorded with positional data for post-processing or reporting, making the instrument useful for cellular network audits, Wi-Fi planning, and regulatory compliance verification. Field Strength Measurement Connect an omnidirectional antenna, select the Field Strength mode, and set the target frequency. After automatic antenna factor (AF) compensation, the instrument displays spatial field strength in dBμV/m — the standard unit for EMC site survey and regulatory compliance work. This removes the need to manually apply correction tables in the field. Screen Recording and Replay The SPECTRAN V4-C includes onboard screen recording and measurement replay functionality, storing approximately 10 GB of captured data locally. This allows engineers to document test sessions fully and review or re-analyse captures at the office without requiring the instrument to be present. Connectivity and Integration The USB Type-C interface supports full API access and remote control, enabling the SPECTRAN V4-C to be integrated into automated test systems, custom Python or LabVIEW workflows, or third-party monitoring platforms. The Android operating system provides flexibility for installing operator-specific applications or interfacing directly with Aaronia's measurement software stack. GNSS data output can support geo-tagged measurement export. Note: The remote control functionality is currently in the final stages of testing. Please check for details. Typical Applications Application Benefit Interference hunting and localisation AoA triangulation and tone-approach search reduce hunt time from hours to minutes Cellular network audit (2G–5G) Coverage mapping and base station demodulation (optional) characterise real-world network performance EMC pre-compliance site survey Field strength measurement with AF compensation delivers calibrated dBμV/m readings on-site Wi-Fi and ISM band planning Spectrogram and DPS modes identify co-channel and adjacent-channel interference sources Spectrum compliance monitoring Outdoor coverage mapping with GPS tagging creates a verifiable record of spectrum use Security and defence RF monitoring −160 dBm/Hz DANL and AoA capability enable detection and tracking of low-probability-of-intercept signals IoT and LPWAN deployment testing 9 kHz lower frequency limit and high sensitivity support LoRa, Sigfox, and NB-IoT frequency verification What Is Included SPECTRAN V4-C analyser unit Car charger (for emergency outdoor battery charging) Product documentation Built-in GNSS receiver and compass (standard) Optional accessories and software licences — including interference localisation, AoA direction finding, tone-approach search, coverage mapping, and base station demodulation (2G/3G/4G/5G) — are available separately. Contact The Debug Store for a full options list. Technical Terms Explained DANL (Displayed Average Noise Level): The lowest signal level the instrument can reliably measure, expressed in dBm/Hz. Lower (more negative) is better. IIP3 (Third-Order Input Intercept Point): A measure of linearity. Higher IIP3 means the analyser handles strong signals alongside weak ones with less intermodulation distortion. DDC (Digital Down-Conversion) Hardware Filter: A technique that shifts an RF signal to a lower intermediate frequency digitally, improving selectivity and speed compared to analogue-only filtering. AoA (Angle of Arrival): A direction-finding method that calculates the compass bearing to a signal source by comparing signal levels from multiple measurement positions. DPS (Digital Persistence Signal): A display mode that maps signal density over time, making low-duty-cycle or transient signals visible that would be missed in a standard sweep. ACLR (Adjacent Channel Leakage Ratio): The ratio of signal power in the intended channel to the power leaked into adjacent channels — critical for cellular transmitter compliance. Spectrogram: A time-frequency-amplitude plot (also called a waterfall display) that scrolls historically, allowing engineers to spot intermittent events.