05/23/2026 2:09 a.m.
https://cablematic.com/en/products/active-extender-long-range-tcp-ip-over-coaxial-1000-m-SJ009/

Active extender long range TCP / IP over coaxial 1000 m

REF: SJ009
Specifications
  • Active extender that transfers Ethernet signal up to a distance of 1000 m using 75 Ohms coaxial cable.
  • Transmission speed in BNC: 100Mbps (500m) and 10Mbps (1000m). Transmission speed in RJ45: 100Mbps (500m) and 10Mbps (800m) with IP09.
  • Each module has a female RJ45 connector, a female BNC connector and a DIP Switch.
  • RJ45 supports 10BASE-T, 100BASE-TX, 100BASE-T1 standard.
  • Supports Auto MDI / MDI-X.

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More info
PVP
195.30
Price including VAT: 195.30
PVD
176.09
2 years
warranty
14 days
returns
100%
safe


We will notify you when it is back in stock.
More info
Specifications
  • Active extender that transfers Ethernet signal up to a distance of 1000 m using 75 Ohms coaxial cable.
  • Transmission speed in BNC: 100Mbps (500m) and 10Mbps (1000m). Transmission speed in RJ45: 100Mbps (500m) and 10Mbps (800m) with IP09.
  • Each module has a female RJ45 connector, a female BNC connector and a DIP Switch.
  • RJ45 supports 10BASE-T, 100BASE-TX, 100BASE-T1 standard.
  • Supports Auto MDI / MDI-X.

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More info

Active Ethernet TCP / IP signal extender through coaxial cable. It consists of two modules that have a female RJ45 connector and a female BNC connector each. Both modules are interconnected by coaxial cable. The Ethernet cable signal for TCP / IP signal transmission is limited to 1000 m.

Specifications
  • Active extender that transfers Ethernet signal up to a distance of 1000 m using 75 Ohms coaxial cable.
  • Transmission speed in BNC: 100Mbps (500m) and 10Mbps (1000m). Transmission speed in RJ45: 100Mbps (500m) and 10Mbps (800m) with IP09.
  • Each module has a female RJ45 connector, a female BNC connector and a DIP Switch.
  • RJ45 supports 10BASE-T, 100BASE-TX, 100BASE-T1 standard.
  • Supports Auto MDI / MDI-X.
  • Active. Each module requires a power supply (DC12V, 0.5 mA). Two power supplies are included.
  • On / off indicator LEDs and status of each port.
  • Mounted in a black metal casing.
  • Size of each module: 49 x 98.7 x 25 mm.
  • It can be linked with cables from our references # RC01x and # TT006.

  • Gross Weight: 440 g
  • Product size (width x depth x height): 4.9 x 9.9 x 2.5 cm
  • Number of packages: 1
  • Packages size: 24.0 x 14.5 x 4.5 cm

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Technical terms

  • Impedance
  • Categories network cables
  • RJ45
  • BNC
Impedance

Impedance (Z) is the total opposition that a circuit offers to alternating current (AC) flow when a specific voltage is applied.

Unlike simple resistance, impedance is a complex quantity comprising resistance (the real part) and reactance (the imaginary part, representing inductive or capacitive effects). In the frequency domain, impedance is represented as a phasor, accounting for both magnitude and phase shift between voltage and current. In DC circuits, impedance reduces to pure resistance with zero phase angle.

ParameterTechnical Spec
SymbolZ
UnitOhm (Ω)

Impedance management is critical in high-speed hardware design and signal integrity. In modern PCB manufacturing, controlled impedance ensures that high-frequency signals reach their destination without reflections, which is vital for PCIe or DDR5 performance.

Complex Domain Analysis

Mathematical modeling of impedance using the j-operator allows engineers to optimize filter performance and resonance characteristics in electronic systems.

Key Advantages

  • Maximum power transfer through impedance matching.
  • Minimized signal reflections in high-frequency transmission lines.
  • Improved electromagnetic compatibility (EMC).

Note: Impedance is the cornerstone of modern AC circuit theory and high-frequency design.

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