PTFE is known to be the best dielectric for RF (Radio frequency)
coaxial cables. The essential function of coaxial cables is to
transmit high frequency energy and signals with low loss, with
reflection less matching and without Phase and Amplitude distortion.
We offer these cables as per USA **MIL-C-17** or Indian **JSS 51100** ranging
from subminiature 1.0 mm OD and standard miniature to high power
sizes. There is also a choice of flexible or semi-rigid
constructions, Characteristic Impedance (Z_{o}) of 50, 75 or
95 ohms (or as specified), solid or semi-air-spaced PTFE, and
Low-noise (anti-microphonic) cables.

The essential function of coaxial cables is to transmit high
frequency energy and signals with low loss, with reflectionless
matching and without Phase and Amplitude distortion. For such
transmission, Characteristic Impedance and Attenuation are important
concepts. Characteristic Impedance (Z_{o}) is determined by
the ratio of dielectric OD to conductor diameter, hence a large
cable and a very small cable can have the same Z_{o} but the
smaller cable will have higher losses.

The problem in high-energy transmission is the losses because of **i)**
cable dielectric, **ii)** cable construction, **iii)** radiation, and **iv)**
interference with adjoining circuits. The coaxial cable construction
has been invented to overcome these problems, in which signals and
energy are contained within an enclosed space. It consists of a core
conductor, surrounded by pure PTFE dielectric covered with a metal
shield, and finally encased in an overall jacket. The shield
provides the return path as well as the confinement for RF energy,
and is generally grounded.

Use with wave-guides.

Micro-wave transmission & delay lines.

High speed calculating machine.

Low noise amplifier circuit.

Perfectly screened connections.

Improvement of technology of internal module connections.

High stress resistance (Vibrations).

Good Phase stability.

Aerospace applications.

Nomenclature & equivalent | O.D. mm | Jacket type | Shields Outer/ Inner | Dielectric O.D.(mm)/ Type | Conductor No Strands/ strands dia mm | Capacitance pF/m | Z_{o} in ohms | Continous Working Voltage RMS | Max Oper freq GHz | Max at 25 deg C dB per 100 m /WatsCW | Weight Kg per 100 m | DC Resist. ohm/100m | ||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|

400 MHz | 3 MHz | 10 MHz | ||||||||||||

RG 196 A/U (Actual) | 1.82 | PTFE | -/S | 0.86/T | 7/0.10 SCW | 100 | 50 | 750 | 3 | 95 | ~ | ~ | 0.85 | 76 |

RG 196 A/U (MIL-SPEC) | 2.03 | PTFE | -/S | 0.86/T | 7/0.10 SCW | 105 | 50 | 750 | 3 | 108/115 | 308/35 | ~ | ~ | ~ |

RG 178 B/U | 1.82 | FEP | -/S | 0.86/T | 7/0.10 SCW | 105 | 50 | 1000 | 3 | 108/115 | 308/35 | ~ | 0.89 | 80.2 |

RG 188 A/U (Actual) | 2.54 | PTFE | -/S | 1.52/T | 7/0.17 SCW | 98 | 50 | 900 | 3 | 54 | ~ | ~ | 1.60 | 25 |

RG 188 A/U (MIL-SPEC) | 2.79 | PTFE | -/S | 1.52/T | 7/0.17 SCW | 105 | 50 | 900 | 3 | 69/210 | 190/75 | ~ | 1.60 | ~ |

RG 316/U | 2.45 | FEP | -/S | 1.52/T | 7/0.17 SCW | 105 | 50 | 1200 | 3 | 69/210 | 190/75 | ~ | 1.82 | 27.6 |

RG 141 A/U (Actual) | 4.57 | VFG | -/S | 2.95/T | 1/0.94 SCW | 95 | 50 | 1400 | 3 | 27.6 | ~ | ~ | 4.65 | 5.8 |

RG 141 A/U (MIL-SPEC) | 4.83 | VFG | -/S | 2.95/T | 1/0.94 SCW | 96 | 50 | 1400 | 3 | 28.2/1000 | 89/350 | ~ | ~ | ~ |

RG 303/U | 4.32 | FEP | -/S | 2.95/T | 1/0.94 SCW | 105 | 50 | 1900 | ~ | 28.2/1000 | 92/350 | ~ | 4.62 | 5.9 |

RG 142 A/U (Actual) | 5.00 | VFG | S/S | 2.95/T | 1/0.94 SCW | 95 | 50 | 1400 | 124 | 27.6 | ~ | ~ | 6.30 | 5.8 |

RG 142 A/U (MIL-SPEC) | 5.23 | VFG | S/S | 2.95/T | 1/0.94 SCW | 96 | 50 | 1400 | 124 | 31.2/1000 | 105/300 | 217/140 | ~ | ~ |

RG 142 B/U | 4.95 | FEP | S/S | 2.95/T | 1/0.94 SCW | 96 | 50 | 1900 | ~ | 38.4 | 115 | ~ | 6.40 | 5.9 |

RG 143 A/U (MIL-SPEC) | 8.25 | VFG | S/S | 4.70/T | 1/1.50 SCW | 96 | 50 | 2200 | 124 | 21/1450 | 72/420 | 144/190 | 14.00 | ~ |

RG 115 A/U (MIL-SPEC) | 10.50 | VFG-3 | S/S | 6.48/T | 7/0.71 S | 96 | 50 | 3700 | 124 | 18/2800 | 51/880 | 98/450 | 27.50 | 0.66 |

RG 225/U (Actual) | 10.70 | VFG-2 | S/S | 7.24/T | 7/0.79 S | 96 | 50 | 3700 | ~ | 14.5 | ~ | ~ | 25.00 | 0.54 |

RG 225/U (MIL-SPEC) | 10.90 | VFG-2 | S/S | 7.24/T | 7/0.79 S | 96 | 50 | 3700 | ~ | 16.4 | ~ | ~ | 29.05 | 0.57 |

RG 187 A/U (Actual) | 2.64 | PTFE | -/S | 1.52/T | 7/0.10 SCW | 67 | 75 | 900 | 3 | 53 | ~ | ~ | 1.60 | 76 |

RG 187 A/U (MIL-SPEC) | 2.79 | PTFE | -/S | 1.60/T | 7/0.10 SCW | 67 | 75 | 900 | 3 | 69/420 | 187/140 | ~ | ~ | ~ |

RG 179 B/U | 2.54 | FEP | -/S | 1.60/T | 7/0.10 SCW | 64 | 75 | 1200 | 3 | 69/420 | 187/140 | ~ | 1.49 | 80.2 |

RG 140/U (MIL-SPEC) | 5.91 | VFG | -/S | 3.71/T | 1/0.64 SCW | 64 | 75 | 1700 | 3 | 26/1600 | 85/350 | ~ | ~ | ~ |

RG 302/U (MIL-SPEC) | 5.13 | FEP | -/S | 3.71/T | 1/0.64 SCW | 64 | 75 | 1700 | 3 | 26/1600 | 85/350 | ~ | 5.96 | 13.6 |

RG 195 A/U (Actual) | 3.68 | PTFE | -/S | 2.59/T | 7/0.10 SCW | 51 | 95 | 1100 | 3 | 46 | ~ | ~ | 2.80 | 76 |

RG 195 A/U (MIL-SPEC) | 3.93 | PTFE | -/S | 2.59/T | 7/0.10 SCW | 51 | 95 | 1100 | 3 | 56/350 | 151/130 | ~ | ~ | ~ |

RG 180 B/U | 3.68 | FEP | -/S | 2.59/T | 7/0.10 SCW | 51 | 95 | 1500 | ~ | 56/350 | 151/130 | ~ | 2.95 | 80.2 |

**Abbreviations-**
**BC:** Bare Copper, **FEP**: Fluorinated Ethylene
Propylene,
**PTFE**: Poly Tetra Fluoro Ethylene, **S**: Silver Plated
Copper, **SCW**: Silvered Copper Weld (also known as **SCCS**:
Silvered Copper Coaled Steel),**T**: Solid PTFE, **TA**:
Airspaced PTFE, **TSC**: PTFE Semi Conductive coaled,
**VFG-2** Varnish fiber Glass Double braid.

**Note**- The cable types with FEP jacket are given
for equivalence purpose only and are not offered by us. Actuals are
listed to indicate superior performance in some respects.