详情
Coaxial cable is a cable type used to carry radio signals, video
signals, measurement signals and data signals. Coaxial cables
exist because we can\'t run open-wire line near metallic
objects (such as ducting) or bury it. We trade signal loss for
convenience and flexibility. Coaxial cable consists of an
insulated center conductor which is covered with a shield. The
signal is carried between the cable shield and the center
conductor. This arrangement give quite good shielding against
noise from outside cable, keeps the signal well inside the cable
and keeps cable characteristics stable.
Coaxial Cables
M*7/***-RG **4 (RG **4 A/U)
Construction
Inner conductor
Tinned copper
7 x 0.*6 mm
Dielectric
Low density PE
Φ1.*0 ± 0.*8 mm
Outer conductor (shield)
Tinned copper
*4 x 0.*0 mm
Shield coverage
*8%
Sheath
PVC or LSZH
Φ2.*0 ± 0.*3 mm
Electrical & Mechanical Characteristics
Impedance *3±3 Ohm0
Nominal capacitance **0pF/m
Velocity of propagation *6%
Insulation resistance >***0 Mohm.Km
Inner conductor resistance **0 Ohm/Km
Outer conductor resistance
*9.0 Ohm/Km
Test/Operatig Voltage(max)
4.5KV/1.6KV
Operating temperature range
**0 °C - **0 °C
Copper Weight
5.9 Kg/Km
Cable weight (approx.)
*2.5 Kg/Km
Screening effectiveness
******0 MHz
>*0dB
Attenuation
Frequency (MHz)
Attenuation (dB/**0 m)
Attenuation (dB/**0ft)
*0
*7.5
5.*4
**0
*5.8
7.*7
**0
*8.2
*1.*5
**0
*4.9
*6.*4
**0
*3.1
*9.*4
**0
*8.6
*0.*1
**0
*1.2
*4.*6
***0
*7.5
*6.*8
Return Loss
*****0 MHz
>*6dB
******0 MHz
>*3dB
******0 MHz
>*0dB
