2 Ports Handheld Vector Network Analyzer

KC901 J/K/R/T/B

Product Highlight

  • 5 kHz to 2/4/7/10/22 GHz
  • S-parameter (S11, S12, S21, S22)  and time domain measurement
  • RF/AF generator, dual-port comparator, field meter, spectrum function
  • 100 dB(typ.) transmission daynamic range and 42dB directionality
  • Temperature-compensated high-precision measurement
  • Ethernet and USB data connection

All-in-one RF measurement instrument

4th KC901x is a RF multi-meter based on the network analyzer architecture. Five models covering the frequency 5kHz to 22 GHz. The main feature of the KC901x is a full dual-port VNA, extend time domain(distance to fault point), simple spectrum display, field strength meter, RF source, AF source, and dual-port comparator utility functions based on the network analyzer architecture.

Document and files

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4th KC901 Overview

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4th KC901 Manual

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KC901x Program manual

Firmware update

S11/S21/S12/S22 Dual-port network analysis

4 Synchronous receivers and 24bit ADC

Phase/Loss/VSWR/SmithChart/Impedance display

Portable and User-Friendly

KC901 is made for portability, with minimal volume and weight advantages in the same class of instruments, very suitable for field experiments, on-site construction and other uses. With the built-in lithium battery and easy operating design, It can support a full day of intense measurements. With USB Type-C charge ability makes engineer do not need to carry a DC adapter.

No-compromise RF performance

Precision RF front-end circuitry coupled with a high-performance ADC, enabling it to achieve trace noise levels <0.005dB .  Anti-crosstalk circuit design and strict shielding allows the KC901 to obtain a better dynamic range of transmission measurements.

Expand Instruments with Free Software

Free KCSDI software makes it easy to expand the measurement capabilities in the lab and measure remotely via an Ethernet connection.

We also provide the programming manual, you can connect the KC901 via RJ45 or usb and integrate it into your test solution.

Distance-to-Fault (DTF) Function
The DTF function is a powerful tool for detecting and pinpointing faults, breaks, or impedance mismatches along RF transmission lines. Perfect for installation, maintenance, and troubleshooting, it allows users to quickly locate cable issues, reducing downtime and ensuring signal quality. This feature is ideal for telecom technicians, broadcast engineers, and RF field engineers who need precise, reliable fault detection in coaxial and other transmission cables.

Comparator Function
The Comparator function allows for accurate phase and level comparisons between two ports, making it ideal for tuning phased arrays and other phase-sensitive RF systems. When used with a directional coupler, it can monitor forward and reflected signal power, providing critical insights into system performance and ensuring optimal alignment and signal integrity.

Spectrum Function
The Spectrum function leverages the VNA’s architecture to provide basic spectrum analysis capabilities, suitable for stable signal measurements. While not as advanced as a dedicated spectrum analyzer, it effectively handles many standard spectrum measurements, making it a practical tool for identifying and assessing steady RF signals in various applications.

RF Source Function
The RF Source function generates reliable RF signals with support for continuous wave (CW) output and FM/ASK modulation, providing flexibility for various testing scenarios. It includes a 60 dB attenuation range, allowing precise control over signal strength, making it ideal for calibration, component testing, and system integration in RF applications.

AF Source Function
The AF Source function generates audio frequency signals with support for continuous wave (CW) and FM/ASK modulation. It provides flexible routing options through either the BNC or RF port, making it versatile for audio signal testing, modulation experiments, and other applications that require low-frequency signal generation.

KC901J

5kHz~2GHz

KC901K

5kHz~4GHz

KC901R

5kHz~7GHz

KC901T

5kHz~10GHz(Release soon)

Technical Parameters

    The technical specifications of KC901x are basically the same, with slightly different output levels for different models. This table is for selection reference only, subject to the parameters contained in the datasheet.

 

Obj Condition Typical value Note
KC901J KC901K KC901R KC901T KC901B
Sweep speed RBW=30kHz, per point 0.8ms When dual ports calibration is turned on, speed reduced to ½.
RBW=10kHz, per point 1ms
RBW=6kHz, per point 1.2ms
RBW=1kHz, per point 3ms
10kHz,201pt per screen 0.2s
Output level for all modes (set to maximum gain) 1MHz-4GHz 3dBm 13dBm
4GHz-6GHz 0dBm 0dBm 10dBm
6GHz-10GHz -3dBm 10dBm
10GHz-22GHz 6dBm
Output adj. range 60dB 45dB
Noise floor 1MHz-4GHz -107dBm -113 dBm RBW=1kHz
4GHz-6GHz -100dBm -100dBm -110 dBm
6GHz-22GHz -90dBm -100 dBm
Dynamic range for transmission measurements 1MHz-1GHz 100dB
1GHz-4GHz 93dB 110dB
4GHz-10GHz 90dB 80dB 100dB
10GHz-22GHz 80dB
Transmission uncertainty 1MHz-10GHz ± (0.2+0.02L) >Dynamic range+20dB
10GHz-22GHz ± (0.3 + 0.02 L)
S11 uncertainty 3dB<RL25dB ± (0.5 + 0.1 RL) <20dB
S11 directionality After calibration 42dB NA
Phase Uncertainty 100kHz-1GHz Return loss <20dB
1GHz-10GHz
10GHz-22GHz 15°
VSWR of the port 1MHz-10GHz 1.5 static
Tracer noise RMS value 0.005dB 0.01dB Loss <10dB
IF Feedthrough Suppression 30dB
Frequency stability, per year 1ppm
Supply voltage DC 11V-32V (charger socket), 5V (Type-C port)
AC Power Adapter 105V-230V
Battery 6.5V-8.4V
Damage level All Ports DC15V, +20dBm
LCD resolution 800×480px
Dimensions 200×114×46mm (L×W×T)
Weight Include battery 1.3kg
Package standard 2.5kg

NOTE: Unless otherwise noted, metrics are measured in medium speed mode, with an analytical bandwidth (RBW) of 10 kHz, output attenuation of 0, temperature of 25°C, and calibrated by the user. A few occasional or permanent anomalous data segments may be outside the range of the parameter.

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