RG-142 cable design
constructively cable RG-142 consists of:
- central conductor: monocore of silver copper with a diameter of 0,94 mm
- dielectric made of fluoroplastic (PTFE) with a diameter of 2,95 mm
- first shielding layer: braiding of silver-plated copper with a diameter of 3,5 mm
- the second shielding layer: a braid of silver-plated copper with a diameter of 4,10
- outer protective shell made of FEP, brown, transparent, 4,8 mm in diameter
Electrical characteristics of the RG-142 cable
Wave resistance: 50 ohms
Linear capacitance: 95 pF/m
Relative speed: 70%
Shortening factor: 1,42
Nominal permissible alternating voltage: 1400 V DC
Nominal direct current: 29 A
Losses and allowable power for RG-142 cable
Frequency, MHz | Losses, dB/100 m* | Power, W** |
30 | 7 | 2373 |
100 | 13 | 1300 |
400 | 26 | 650 |
1000 | 42 | 411 |
2500 | 69 | 260 |
* Typical values for 20ºС and altitude above sea level
** The value of the permissible average power for an ambient temperature of 40ºC
Mechanical characteristics of the RG-142 cable
Linear weight: 80 g/m
Minimum bending radius: 30 mm
Re-bending radius: 120 mm
Compatibility and analogues
The RG-142 coaxial cable is included in the G5 cable group and is similar in size to the following widely used types of HF coaxial cables: RG-223/U, RG-400.
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