Specializing in
Long Distance
Wireless Networking.

CFD Coax Cables

Celled Foam Dielectric (CFD) cables are high quality, low-loss cables for commercial, high frequency applications.

FreeNet Antennas stocks the following CFD Cables, and the matching connectors.

Cable Type CFD200 CFD400
Physical Properties
Mechanically similar to

RG58/U

RG8/U JIS 8D
Conductor
Qty
Material
O.D.
One
Bare Copper Wire
1.12 mm
One
Copper Clad Aluminium
2.7 mm
Dielectric
Material
O.D.
Celled Foam
2.95 mm
Celled Foam
7.24 mm
Shield
Binder
 
Braid
Sealed Aluminum Mylar
Aluminum Tape
Tinned Copper Wire
(88% coverage)

Sealed Aluminum Mylar
Aluminum Tape

Tinned Copper Wire
(88% coverage)

Jacket
Material
O.D.
Polyethylene (PE)
4.95 mm
Polyethylene (PE)
10.3
Mass

0.037 kg/m

0.108 kg/m
Minimum Bend Radius

12.7 mm

25.4 mm
Electrical Properties
Nominal Impedance 50 ohms 50 ohms
Velocity of Propagation 83% 85 %
Capacitance 80.4 pF/m (24.5 pF/ft) 78.4 pF/m (24.0 pF/ft)
DC Resistance Inner Conductor 19.6 ohm/km 4.56 ohm/km
Outer Conductor 16.0 ohm/km 5.41 ohm/km
Attenuation
MHz
2400 (measured)
2000
1500
900
450 (70 cm band)
220
150 (2 m band)
50
30

dB/m

0.540
0.493
0.424
0.326
0.228
0.159
0.130
0.075
0.058
dB/m
0.220
0.196
0.168
0.128
0.089
0.061
0.050
0.029
0.022

Site Meter    Copyleft: Rob Clark 2003    Comments?: Webmaster     

FWD Number:
71950

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