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Product

industrial data rf cable series50 Ω · Ø 10.29 mm (.405")85 % VoP · > 90 dB Double Shield12.8 dB/100m @ 1 GHz

LMR-400 Low-Loss 50 Ohm Double-Shielded Flexible RF Coaxial Cable50 Ω Ø 10.29 mm (.405") low-loss 85 % VoP double-shielded flexible RF coaxial cable

50 Ω flexible low-loss RF coaxial cable (LMR-400) Drop-in RG-8/U and 9913 upgrade with a 2.74 mm BCCAI inner conductor, gas-injected foam PE dielectric (85 % VoP, 78.4 pF/m), bonded aluminum tape plus tinned copper braid (> 90 dB shielding), and UV PE jacket.

Low-EMC design
EMC screen
Outdoor & humid
Ozone, UV & moisture
Order designation
LMR-400 Standard PE
Outer Ø ≈
10.29 mm
Wall thickness
1.08 mm
Total weight ≈
101.0 kg/km
Min. bend R (fixed)
25 mm
All sizes (8)
Request a quoteDatasheetWhatsApp
Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum
Impedance
50 Ω ± 2 Ω
DC to 6 GHz wireless RF band
Velocity (VoP)
85 %
78.4 pF/m gas-injected foam PE
Attenuation
12.8 dB/100m
At 900 MHz · 22.2 dB @ 2.4 GHz
Shielding
> 90 dB
Bonded Al tape + Sn-Cu braid
Outer diameter
10.29 mm (.405")
Fits RG-8 / RG-213 N/TNC/SMA
Min bend radius
25.4 mm (1.0")
Installation · 101.6 mm repeated

Typical values for this cable type, based on IEC 61196-1 / MIL-DTL-17 RG-8/213 Footprint (50 Ω Low-Loss Flexible Coax) — confirmed in the datasheet and quotation for your order.

Application fit

Is LMR-400 right for your machine?

Deploy LMR-400 for 4G/5G/Wi-Fi 6E outdoor antenna jumpers, LoRaWAN/SCADA telemetry masts, GPS/GNSS timing rooftops, WISP backhaul, and land-mobile base stations replacing lossy RG-213.

Fixed installation

Suitable

Delivers < 50 % of the RF attenuation of solid-PE RG-213/U at 1–6 GHz while maintaining the same 10.29 mm (0.405 in) connector footprint.

Immersion & wet locations

Suitable

Closed-cell foam core resists moisture; LMR-400-DB adds polyisobutylene flooding compound under the braid for burial.

VFD inverter to AC motor screened feeder

Suitable

100 % bonded aluminum tape plus tinned copper braid provides > 90 dB RF shielding (> 30 dB better than single-braid RG-213).

Energy chain / drag chain

With conditions

Standard solid-BCCAI LMR-400 is for fixed routing; select LMR-400-UF (stranded bare Cu + TPE jacket) for flexing antenna rotators.

Use LMR-400-UF UltraFlex
Typical machinesCellular, Wi-Fi 6E & Private 5G JumpersSCADA, LoRaWAN & Utility TelemetryGNSS / GPS Rooftop Timing AntennasMarine & Port VTS / AIS TranspondersAmateur Radio & Defense Field Masts

Construction

Layer by layer

Double-shielded .405" low-loss coax: Ø 2.74 mm BCCAI center conductor (or stranded Cu on UF), Ø 7.24 mm gas-injected foam PE, bonded Al tape, tinned Cu braid, and UV PE jacket.

12345
Schematic, not to scale — generated from the layer data
#LayerMaterial & reference
1Copper-clad aluminum (BCCAI) center conductorSolid bare copper-clad aluminum Ø 2.74 mm (0.108 in) or 7-strand bare copper (LMR-400-UF)Full copper skin-depth conductivity above 5 MHz with low cable weight
2Gas-injected closed-cell foam PE dielectricPhysical nitrogen-foamed closed-cell polyethylene (Ø 7.24 mm, 85 % VoP, 78.4 pF/m)Cuts microwave dielectric loss and prevents longitudinal water ingress
3100 % bonded aluminum/polyester/aluminum tapeAluminum tape bonded directly to the foam PE core (Ø 7.39 mm)Eliminates tape buckling on tight 25.4 mm bends and ensures 100 % RF coverage
4Tinned copper wire outer braidASTM B33 tinned copper wire braid (Ø 8.13 mm, ≥ 85 % coverage; flooded on -DB)Provides > 90 dB shielding effectiveness and low-resistance crimp termination
5UV-resistant PE, FR-LSZH or TPE outer jacketBlack UV-stabilized PE (Ø 10.29 mm, 20-yr outdoor life), FR-LSZH (-FR), or TPE (-UF)Weatherproof outdoor protection across -40 °C to +85 °C

LMR-400 / LMR-400-DB (Outdoor / Flooded)

Solid Ø 2.74 mm BCCAI center + UV-black PE jacket (with water-blocking gel on -DB)

LMR-400-UF (UltraFlex) / LMR-400-FR (LSZH)

7-strand bare copper + TPE jacket for flexing (-UF) or flame-retardant LSZH indoor riser (-FR)

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on IEC 61196-1 / MIL-DTL-17 RG-8/213 Footprint (50 Ω Low-Loss Flexible Coax). Values for your order are confirmed in the datasheet and quotation.

Electrical

Characteristic impedance
50 Ω ± 2 Ω
Velocity of propagation
85 % nominal (capacitance 78.4 pF/m, 3.92 ns/m)
Cutoff / max frequency
16.2 GHz cutoff · DC to 6 GHz operating
Attenuation @ 150 / 450 / 900 MHz
4.9 / 8.9 / 12.8 dB/100m
Attenuation @ 1.5 / 2.4 / 5.8 GHz
16.8 / 22.2 / 35.5 dB/100m
Conductor / shield DC resistance
4.56 Ω/km inner · 5.41 Ω/km outer shield

Thermal

Operating temperature range
-40 °C to +85 °C
Peak RF power / voltage rating
16.0 kW peak · 2,500 V DC
Avg power @ 900 MHz / 2.4 GHz
0.58 kW / 0.33 kW CW at +40 °C

Mechanical

Inner / dielectric / braid Ø
2.74 mm / 7.24 mm / 8.13 mm
Overall jacket diameter
10.29 mm (0.405 in)
Min. bending radius
25.4 mm (1.0 in) single · 101.6 mm (4.0 in) repeated
Max. pulling tension
712 N (160 lbf) · Crush 0.71 kg/mm

Resistance

Shielding effectiveness
> 90 dB (bonded Al tape + Sn-Cu braid)
Outdoor UV & water blocking
20-yr UV PE jacket · Flooded -DB water-blocked
Flame rating (-FR / -LLPL)
UL CMR / NEC Riser (-FR) · UL CMP Plenum (-LLPL)

Reference standards

Coaxial test standard
IEC 61196-1 / MIL-DTL-17 (.405" footprint)
Connector compatibility
Type N, TNC, SMA, RP-SMA, UHF (PL-259), 7-16, 4.3-10
RoHS & REACH
RoHS 3 (2015/863/EU) & REACH compliant

Identification

Outer jacket colour
Black (RAL 9005)
Surface legend
TEBAOFLEX LMR-400 50 OHM LOW LOSS FLEXIBLE RF COAXIAL CABLE
Customs tariff (HS)
8544.20

Sizes

8 standard configurations (LMR-400)

Engineering dimensions, impedance, propagation velocity, and electrical ratings for LMR-400 per IEC 61196-1 / MIL-DTL-17 RG-8/213 Footprint (50 Ω Low-Loss Flexible Coax).

Dimensions & weights
Order designationImpedance / sizeConductor & dielectricWall ≈
mm		Outer Ø ≈
mm		Metal
kg/km		Weight ≈
kg/km		Min. bend R
fixed mm		Enquiry
Standard LMR-400 configurations
LMR-19550 Ω · Ø 4.95 mm (.195")Cu Ø 0.94 + Foam PE0.644.9518.030.013
LMR-20050 Ω · Ø 4.95 mm (.195")Cu Ø 1.12 + Foam PE0.644.9520.033.013
LMR-24050 Ω · Ø 6.10 mm (.240")Cu Ø 1.42 + Foam PE0.846.1029.050.019
LMR-400 Standard PE50 Ω · Ø 10.29 mm (.405")BCCAI Ø 2.74 + Foam PE1.0810.2952.0101.025
LMR-400-DB Flooded50 Ω · Ø 10.29 mm (DB)BCCAI Ø 2.74 + Gel/PE1.0810.2952.0108.025
LMR-400-UF UltraFlex50 Ω · Ø 10.29 mm (TPE)Stranded Cu Ø 2.74 + TPE1.0810.2972.0130.025
LMR-400-FR LSZH Riser50 Ω · Ø 10.29 mm (LSZH)BCCAI Ø 2.74 + LSZH1.0810.2952.0115.025
LMR-60050 Ω · Ø 14.99 mm (.590")BCCAI Ø 4.47 + Foam PE1.5214.99110.0195.038
  • Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
  • Outer diameters and weights are nominal engineering values for LMR-400 subject to standard manufacturing tolerances per IEC 61196-1 / MIL-DTL-17 RG-8/213 Footprint (50 Ω Low-Loss Flexible Coax).

Quality & approvals

Testing & inspection

Routine tests on every production length, sample and type tests per batch — documented on an EN 10204 3.1 inspection certificate.

  1. ConductorClass 5 stranding
  2. Spark test100 % in-line
  3. Lay-upCores, earth, fillers
  4. SheathingInner, braid / screen, outer
  5. Electrical testsAC voltage, resistance
  6. DimensionsOD, wall thickness
  7. Inspection documents & dispatchDrum & dispatch
Testing & inspectionTest value / referenceFrequency
Routine tests
Characteristic impedance, return loss (VSWR) & TDR sweep100 % frequency-domain return loss and TDR impedance verification per IEC 61196-1 / MIL-DTL-17 RG-8/213 Footprint (50 Ω Low-Loss Flexible Coax)Every manufactured length
Dielectric spark & high-voltage withstand test100 % in-line spark and AC/DC dielectric withstand per IEC 61196-1 / MIL-DTL-17 RG-8/213 Footprint (50 Ω Low-Loss Flexible Coax)Every spool or drum length
Sample tests
Insertion loss (attenuation), velocity & capacitance checkAttenuation (dB/100m), VoP (%), and capacitance within IEC 61196-1 / MIL-DTL-17 RG-8/213 Footprint (50 Ω Low-Loss Flexible Coax) limitsPer production batch
Screening attenuation, transfer impedance & environmental qualificationQualified to IEC 61196-1 / MIL-DTL-17 RG-8/213 Footprint (50 Ω Low-Loss Flexible Coax) EMC shielding, thermal, and flame/fluid criteriaType qualification

Inspection certificate

Issued with every drum, listing the routine test results for that length.

Product approvals

IEC 61196-1 / MIL-DTL-17 RG-8/213 Footprint (50 Ω Low-Loss Flexible Coax)CE (2014/35/EU) & RoHS 3 (2015/863/EU) CompliantREACH SVHC Compliance Verified

Company certificates

ISO 9001ISO 14001ISO 45001VDE marks approvalUL / cULCE · LVD / EMC

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX LMR-400 50 OHM LOW-LOSS DOUBLE-SHIELDED RF COAXIAL CABLE
Delivery form
Export wooden drums, flange reels or precision coils
Standard lengths
100 m · 305 m · 500 m · 1000 m (or custom cut lengths)
MOQ
100 m (stock sizes) · 300–500 m (custom build)
Lead time
2–4 weeks ex-works
Incoterms
EXW, FOB, CIF, DAP

Technical documents

Downloads

PDFLMR-400 Low-Loss 50 Ohm Double-Shielded Flexible RF Coaxial Cable – technical datasheet8 sizes · construction, technical data, approvalsXLSXLMR-400 spec data (Excel)All 8 sizes with dimensions and data, for your BOM or quotation
Revision
2026-10-20
Updated
2026-10-20

FAQ

Questions engineers ask first

Not covered here? Send your drawing — an engineer replies within 2 business hours.

How does LMR-400 improve upon legacy RG-213/U and RG-8/U coaxial cables?
While sharing the same 10.29 mm (0.405 in) outer diameter as RG-213/U, LMR-400 replaces the lossy 66 % VoP solid PE core and single copper braid with an 85 % VoP nitrogen-foamed PE core and a 100 % bonded aluminum tape + tinned copper braid, cutting 1 GHz attenuation from ~26 dB/100m down to 12.8 dB/100m and raising shielding from ~55 dB to > 90 dB.
What is the difference between LMR-400, LMR-400-DB, LMR-400-UF, and LMR-400-FR?
Standard LMR-400 uses a UV-black PE jacket for outdoor runs; LMR-400-DB adds a watertight flooding compound for direct burial or wet conduits; LMR-400-UF substitutes a 7-strand bare copper center conductor and flexible TPE jacket for repeated flexing (with 20 % higher attenuation); and LMR-400-FR uses a flame-retardant LSZH jacket for indoor building risers.
Why is the aluminum foil tape bonded directly to the foam dielectric?
Bonding the 100 % aluminum tape to the closed-cell foam PE keeps the inner shield concentric during tight 25.4 mm bends and allows quick, clean strip-and-crimp termination without loose foil slivers shorting to the center pin.
Does the copper-clad aluminum (BCCAI) center conductor reduce RF performance?
No. Due to the RF skin effect, all high-frequency current above 5 MHz flows within the outer pure-copper cladding layer, delivering identical RF attenuation to solid copper while reducing cable weight by ~30 %.

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LMR-400 Low-Loss 50 Ohm Double-Shielded Flexible RF Coaxial Cable

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