We are the exclusive manufacturer of both Welded type and Seamless type Al tube hardline trunk cable, and manufacture around 30% of the Chinese market supplies.
QR 540 JCA, QR 540 JCAM109, QR 540 JCASS Trunk Cable;
Both Welded type and Seamless type available:

1) Construction
Center Conductor:	3.15+0.01mm Solid Copper/Copper Clad Aluminum
Dielectric:	13.03+0.05mmFoam PE
Outer Conductor:	13.72mm Aluminum Tube
Outer Conductor Thickness:	0.343mm
Jacket:	15.49+0.05mm PVC / PE
Jacket Wall Thickness:	0.89mm
Messenger:	2.77mm Steel
Jelly/APD	Per Customer’ Special Requirement
2) Characteristics
Impedance: 75+3 Ohm Capacitance: 50+3nF/km, 15.3+1pF/ft Velocity of Propagation: 87%

3) Attenuation
Attenuation [@68o F. (20o C.)] Frequency (MHz) Maximum (dB/100 ft.) Maximum (dB/100 m) 5 0.13 0.43 50 0.43 1.41 108 0.63 2.07 150 0.74 2.43 193 0.87 2.85 250 0.99 3.25 300 1.08 3.54 350 1.17 3.84 400 1.26 4.13 450 1.35 4.44 500 1.41 4.63 550 1.51 4.95 600 1.59 5.23 750 1.80 5.02 1000 2.10 6.91