LL240 Antenna Extension Cable
(CLF240, KRL240,®LMR240) – 50Ω Very Low Loss Double Shielded 6.1mm
Suitable for Mobile and Fixed-Wireless installations such as Vehicles, Caravanns, Offices Buildings and Homes.
Lower loss than the LL195 (®LMR195).
LL240 Coax has two SMA female connectors. Double shielded by one layer of Aluminium foil and one close-knit copper braid make for a low-loss coax with 6.1mm overall diameter. Its very-low signal attenuation figures make it well suited for use at Cell Phone frequencies.
LMR240 – Signal Loss – 10m cable length | Frequency (MHz): | | 850 | 900 | 1800 | 2100 | 2400 (WiFi) | Attenuation (dB): | | 2.4 | 2.5 | 3.6 | 3.8 | 4.1 |
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Outer Diameter: | | 6.1mm Impedance: 50Ω |
Inner Conductor: | | 1.42mm Solid Copper |
Outer Sheild: | | Bonded Aluminum Foil + Tinned Copper Braid |
Dielectric: | | Physical Foam Polyethylene |
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There are many suppliers that manufacture coax cables to the ®LMR series specification. Some suppliers cut corners, producing sub-standard coax which does not conform. Shown below is a comparison of the high quality coax we supply with our kits and a sub-standard version. |
Our High Quality Coax
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| Fully Tinned Copper Outer Braid
– Resist corrosion and electrolysis
– Strong mechanical connection
– Lower loss over long lengths | Greater than 90% Braid Coverage
– Lower signal loss | Bonded Foil Second Shield
– Consistent Impedance | Correct Inner & Outer Conductor Diameter
– Correct impedance. | Foam Polyethylene/Air Dielectric |
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Cheap Poor Quality Coax
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| Bare Copper Outer Braid
– No Corrosion resistance
– Weak mechanical connection | Less than 75% Braid Coverage
– Signal loss by radiation | Loose Foil Second Shield
– Inconsistent Impedance | Undersized Inner & Outer Conductor Diameter
– Loose fit to crimp connectors
– Poor impedance match | Solid Polyethylene Dielectric
– Higher signal loss |
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 ®LMR is a registered trademark of Times Mircowave Systems USA |
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Specification Data (LMR240A.pdf, 39 Kb) [Download]