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Combined cables intended for the transmission of television signals in video surveillance systems with simultaneous connection of power and/or transmit control signals.

For the inner strip.

It consists of a radio frequency cable and power supply wires, united under a single sheath.

RF cable:

  • with solid copper inner conductor
  • with insulation of foamed polyethylene
  • with the external conductor in the form of a braid of copper wire

Cores power and a common cable sheath:

  • veins supply a cross section of 0.50 sq. mm
  • in the common sheath of PVC compound (for internal installation)

Features:

  • Brand radiocable - RK 75-3-32
  • Inner conductor - 1x0. 60 mm
  • Insulation diameter - 2.7 mm
  • The attenuation coefficient at f=6 MHz and 2.9 dB/100 m
  • Outer cable diameter - 10 mm
  • Cable weight is 69.5 g/m
  • Material outer sheath - PVC
  • Leads electric resistance to DC current at 20 °C and length 1 km, not more of 40.5 Ohm/km

The electrical characteristics of radiocable:

  • Impedance - 75 Ohm
  • Electric cable capacitance - 56 pF/m
  • Coefficient of shortening of the wave length of 1.22
  • The coupling resistance is 110 mOhm/m
  • The speed of propagation of the wavelength - 82%

Attenuation coefficient:

Frequency, MHz Coefficient attenuation, dB/100 m
6 2,7
10 3,5
50 7,9
100 11,4
200 16,3
470 25,5
862 35,3
1000 38,4
2150 58,7

Operating conditions - from -50°C to + 70°C.

Resistant to high humidity 98% at temperatures up to 35°C, under conditions of installation bending or minus 15°C.

Resistant to bends (not less than 10 bends at an angle of +/-90° if the radius of the bend, equal to ten maximal external diameter of the cable).

The service life of the cables is 25 years.

Cables - characteristics:

Cable sort
Combo