Coaxial cable Kingsignal KSR400UF Ultra Flex 50 Ohm extremely flexible Ø10.1 mm buy in Ukraine AstreiaTactical

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Kingsignal KSR400UF Ultra Flex 50 Ohm Coaxial Cable Ø10.1 mm is an ultra-flexible professional-grade low-loss RF feeder designed for applications requiring exceptional flexibility, mechanical durability, and stable high-frequency signal transmission.

Kingsignal KSR400UF Ultra Flex is optimized for installation in confined spaces, moving assemblies, and complex routing paths where standard LMR-400 or Low Loss 400 cables lack sufficient flexibility. In terms of electrical characteristics and construction, it is a full equivalent of Low Loss 400 Flex Coax and LMR-400-Ultraflex (Amphenol Times Microwave Systems).

Thanks to its physically foamed dielectric, effective dual shielding, and thermoplastic elastomer (TPE) outer jacket, the cable provides low attenuation, high peak power handling, and stable operation over a wide temperature range.

🫡 We are a team of veterans

We are a team of veterans who select cable solutions based on real-world operating conditions, including vibration, frequent bending, complex installation, and high-power operation. That is why KSR400UF Ultra Flex is recommended for mission-critical RF systems.

⚙️ Specifications

Parameter	Value
Cable type	Kingsignal KSR400UF Ultra Flex
Characteristic impedance	50 ± 2 Ohm
Outer diameter	10.10 ± 0.30 mm
Inner conductor	Bare stranded copper Ø2.74 ± 0.05 mm
Dielectric	Physically foamed polyethylene (Foam PE) Ø7.24 ± 0.20 mm
First shield	Self-bonding aluminum-polymer foil (AL/PET/AL)
Second shield	Tinned copper braid, coverage ≥ 80 %, Ø8.13 mm
Outer jacket	Thermoplastic elastomer (TPE), black
Capacitance	78 pF/m
Velocity of propagation	83 %
Peak power	up to 16 kW
Maximum operating voltage	2500 V DC
Breakdown voltage	2000 V DC (1 min, no breakdown)
Insulation resistance	≥ 5000 MΩ·km
VSWR (30–3000 MHz)	≤ 1.28
Approximate weight	135 kg/km
Maximum tensile strength	726 N
Crush resistance	3.6 N/mm
Minimum bend radius (single)	25.4 mm
Minimum bend radius (repeated)	101.6 mm
Minimum installation temperature	–20 °C
Storage temperature	–55 °C … +85 °C
Operating temperature	–40 °C … +85 °C
Compliance	RoHS (2011/65/EU)

Attenuation (maximum values, 20 °C):

Frequency	dB / 100 m
30 MHz	3.02
50 MHz	3.97
150 MHz	6.03
220 MHz	7.35
450 MHz	11.06
700 MHz	13.78
900 MHz	15.72
1500 MHz	20.75
2000 MHz	24.11
2500 MHz	27.11
5800 MHz	43.48

💬 Comment / comments

KSR400UF Ultra Flex combines the electrical performance of classic low-loss feeders with exceptional flexibility. It is ideally suited for movable antenna assemblies and complex cable routing without signal degradation.

🎯 Who it is for

For military communication units and RF engineering teams. For telecommunications operators and system integrators. For RF engineers working with high-power transmitters and antenna systems in demanding installation environments.

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Coaxial cable Kingsignal KSR400UF Ultra Flex 50 Ohm extremely flexible Ø10.1 mm

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tel. +380993230988

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