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ADMS-M3100 Radio Programming Software for the Yaesu FTM-3100 / U
ADMS-M3100 Radio Programming Software for the Yaesu FTM-3100 / U
LMR-240 UltraFlex (custom cut length) price per ft
LMR-240 UltraFlex (custom cut length) price per ft

LMR®-240 UltraFlex Flexible Low Loss Communications Coax Ideal for…

  • Jumper Assemblies in Wireless Communications Systems
  • Short Antenna Feeder runs (e.g. WLL, GPS, LMR, Mobile Antennas)
  • Any application requires periodic/repeated flexing

LMR-240 Ultra coaxial cable provides excellent performance, but yet is under 0.25 inch in diameter. It is the same size as RG-8X, but with better specifications. Because of its stranded center conductor, it is very flexible. We also carry the regular LMR-240.

LMR® standard is a UV Resistant Polyethylene jacketed cable designed for 20-year service outdoor use. The bending and handling characteristics are significantly better than air-dielectric and corrugated hard-line cables.

Flexibility and bendability are hallmarks of the LMR- 240 cable design. The flexible outer conductor enables the tightest bend radius available for any cable of similar size and performance.

Low Loss is another hallmark feature of LMR-240. Size for size LMR has the lowest loss of any flexible cable and comparable loss to semirigid hard-line cables.

RF Shielding is 50 dB greater than typical single shielded coax (40 dB). The multi-ply bonded foil outer conductor is rated conservatively at > 90 dB (i.e. >180 dB between two adjacent cables).

Weatherability: LMR-240 cables designed for outdoor exposure incorporate the best materials for UV resistance and have life expectancy in excess of 20 years.

LMR Coaxial Cable Attenuation Ratings
Nominal attenuation db/100 feet at (MHz)

LMR CABLE30501502204509001500180020002500

Construction Specifications
Description Material In. (mm)
Inner Conductor Stranded BC 0.056 (1.42)
Dielectric Foam PE 0.150 (3.81)
Outer Conductor Aluminum Tape 0.155 (3.94)
Overall Braid Tinned Copper 0.178 (4.52)

Mechanical Specifications
Performance Property Units US (metric)
Bend Radius: installation in. (mm) 0.75 (19.1)
Bend Radius: repeated in. (mm) 2.5 (63.5)
Bending Moment ft-lb (N-m) 0.125 (0.17)
Weight lb/ft (kg/m) 0.034 (0.05)
Tensile Strength lb (kg) 80 (36.3)
Flat Plate Crush lb/in. (kg/mm) 13 (0.23)

Electrical Specifications
Performance Property Units US (metric)
Cutoff Frequency GHz 31
Velocity of Propagation % 84
Dielectric Constant NA 1.42
Time Delay nS/ft (nS/m) 1.21 (3.97)
Impedance ohms 50
Capacitance pF/ft (pF/m) 24.2 (79.4)
Inductance uH/ft (uH/m) 0.060 (0.20)
Shielding Effectiveness dB >90
DC Resistance
Inner Conductor ohms/1000ft (/km) 4.28 (14.1)
Outer Conductor ohms/1000ft (/km) 3.89 (12.8)
Voltage Withstand Volts DC 1500
Jacket Spark Volts RMS 5000
Peak Power kW 5.6

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This product was added to our catalog on Monday 14 August, 2006.
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