VR1129 MRG179D is a double-screened coaxial cable, 75 Ohms radio frequency. This cable consists of S.P.C.C.S. conductor, P.T.F.E. insulation, double S.P.C.W. screen and FEP sheath.
The VR1129 MRG179D is a double‑screened coaxial cable designed for 75 Ω radio‑frequency applications. It features a solid‑core SPC‑CCS copper conductor, PTFE dielectric, and a double SPC‑W screen with 93 % coverage, all protected by an extruded FEP jacket.
The cable complies with MIL‑C‑17/94 and the double‑screened version of RG‑179. It is rated for a continuous working voltage of 900 V RMS, operates from –55 °C to +200 °C, and provides a characteristic impedance of 75 + 3 Ω with a capacitance of 75 pF/m and attenuation of 68.90 dB/100 m at 400 MHz.
| Cable type | MRG179DT double‑screened coaxial, 75 Ω RF |
|---|---|
| Conductor diameter | 0.004 in (0.102 mm) |
| Dielectric material | Extruded PTFE |
| Screen coverage | 93 % coverage, 0.004 in (0.102 mm) thickness |
| Jacket wall thickness | 0.25 mm |
| Continuous working voltage | 900 V RMS max |
| Temperature rating | -55 °C to +200 °C |
| Conductor resistance | 802 Ω/km max @ 20 °C |
| Final cable diameter | 2.90 mm min / 3.10 mm max |
| Capacitance | 75 pF/m max |
| Impedance | 75 + 3 Ω |
| Attenuation at 400 MHz | 68.90 dB/100 m max |
The cable is rated for a continuous working voltage of 900 V RMS maximum.
It can operate from –55 °C up to +200 °C.
The cable has a characteristic impedance of 75 + 3 Ω.
Attenuation is 68.90 dB per 100 m maximum at 400 MHz.