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  Heliax Cables
LMR Series Cables
 
   
Connecting People, Through Technology

Ground Plane Antennas
 
LDF 4-50A Cables  
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LDF 4-50 Cable
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Frequency
MHz
Attenuation
dB /100 ft
Attenuation
dB/100 m
Average Power, kW  
         
0.5 0.045 0.149 40.0
1 0.064 0.211 35.8
1.5 0.079 0.259 29.2
2 0.091 0.299 25.3
10 0.205 0.672 11.3
20 0.291 0.954 7.93
30 0.357 1.17 6.46
50 0.463 1.52 4.98
88 0.619 2.03 3.73
100 0.661 2.17 3.49
108 0.688 2.26 3.36
150 0.815 2.67 2.83
174 0.880 2.89 2.62
200 0.946 3.10 2.44
300 1.17 3.83 1.97
400 1.36 4.46 1.70
450 1.45 4.75 1.59
500 1.53 5.02 1.51
512 1.55 5.08 1.49
600 1.69 5.53 1.37
700 1.83 6.01 1.26
800 1.97 6.46 1.17
824 2.00 6.56 1.15
894 2.09 6.85 1.10
960 2.17 7.12 1.06
1000 2.22 7.28 1.04
1250 2.51 8.23 0.921
1500 2.77 9.09 0.833
1700 2.97 9.74 0.777
1800 3.07 10.1 0.753
2000 3.25 10.7 0.710
2100 3.34 11.0 0.691
2200 3.43 11.2 0.673
2300 3.52 11.5 0.657
3000 4.09 13.4 0.565
3400 4.39 14.4 0.526
4000 4.82 15.8 0.479
5000 5.49 18.0 0.421
6000 6.11 20.1 0.378
8000 7.26 23.8 0.318
8800 7.69 25.2 0.300
       
 
Description
 
Cable Ordering Information Standard Cable 1/2" Standard Cable, Standard JACKET fire Retardant Cables 1/2" Fire Retardant Jacket(CATVX) 3/8" Fire Retardant Jacket(CATVR) Low VSWR and Specialized cables 1/2" LowVSWR, specify operating band phase Stabilized and Phase Meassured cable Jumper Cable Assemblies

LDF4-50

LDF4RN-50A
LDF4RN-50A

LDF4P-50-A(**)
Characteristics
Electrical
Impedance, ohms
Maximum Frequency, GHz
Velocity,
percent Peak Power Rating, Kw
Dc Resistance, ohms/1000ft(1000m)
Inner
Outer
Dc Breakdown, volts
Jacket Spark, volts
Capacitance, Pf/ ft(m)
Inductance, Ph/ ft(m)

50 +- 1
8.8
88
40

1.45(1.48)
0.58(1.90)
4000
8000
23.1(75.8)
0.058(0.19)

 
Mechanical
 
Outer conductor
Inner Conductor
Diameter over Jacket, in (mm)
Diameter over Copper outer Conductor, in(mm) Diameter Inner Conductor, in (mm)
Minimum Bending Radius, in(mm)
Number of Bends, minimum (typical)
Bending Moment, lb-ft (N.m)
Cable Weight, lb/ft(kg/m)
Tesile strength, lb(kg)
Flat Plate Crush Strength, lb/in(kg/mm)
Copper
Copper- Clad Aluminium 0.63(161)
0.55(14)
0.189(4.6)
1.11
15(50)
2.8(3.8)
0.15(0.22)
250(113)
110(2.0)
 
 
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Standard conditions: For attenuation. VSWR 1.0, ambient temperature 20’C (68’F) For Average power. VSWR 1.0 ambient temperature 40’C (104’F) Inner conductor temperature 100’C(212’F), no solar loading
     
Cables : RF Coaxial & Microwaves Cables : Heliax Cable : LDF 1-50 Cable: LDF 2-50 Cable : LDF 4-50 Cable:
LDF 4-5.50 Cable: LDF 5-50A Cable: VXL 5-50A Cable : FSJ Series Cables: FSJ 1-50A Cable: FSJ 2-50A Cable: FSJ 4-50B Cable:
     
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