Product Specification · Built in America · Ships Today
Generated 2026-11-14
Generated 2026-11-14
CABLE
123-142-50
RG-142 bulk RF coaxial cable
Public-safety LTE · 4G/5G FR1 (sub-3 GHz) · 5G mid-band
Manufacturer: 123eWireless · MPN: 123-142-50 · Legacy PN: M4251
Details
RG-142 is a 50-ohm RF coaxial cable engineered for reliable, durable RF interconnect. Rated to 8 GHz.
Construction: Solid Silver-Plated Copper-Clad Steel inner conductor, PTFE (Polytetrafluoroethylene) dielectric, Double Silver-Plated Copper Wire Braid outer conductor (shield), FEP, Brown jacket.
Operating range -55 to 200 °C. Sold by the foot from continuous reels; cut to length on order.
Why this part
RG-142 50-ohm RF coaxial cable, engineered for durable, reliable RF interconnect.
I.Electrical Characteristics
| Nominal Impedance (Ω) | 50 |
| Frequency Range | DC – 8 GHz |
| — Cable Attenuation Chart (Standard Test Frequencies) — | |
| Cable Attenuation @ 600 MHz (dB/100 ft) | 9.90 |
| Cable Attenuation @ 1.9 GHz (dB/100 ft) | 18.63 |
| Cable Attenuation @ 2.6 GHz (dB/100 ft) | 22.25 |
| Cable Attenuation @ 3.5 GHz (dB/100 ft) | 26.41 |
| Cable Attenuation @ 6 GHz (dB/100 ft) | 36.31 |
| Velocity of Propagation (Vp) (%) | 69 |
| Dielectric Constant (εr) | 2.10 (derived from Vp) |
| Time Delay (ns/ft) | 1.47 (derived) |
| Capacitance (pF/ft) | 29.3 |
| Inductance (µH/ft) | 0.074 |
| DC Resistance — Inner Conductor (Ω/1000 ft) | 19.20 |
| DC Resistance — Outer Conductor (Ω/1000 ft) | 2.29 |
| Proof Voltage (V) | 1900 |
| PIM Rating (dBc) |
II.Construction & Dimensions
| — Identification — | |
| Cable Family / Trim Code | RG142 |
| Commercial Name | RG-142 |
| Cable OD — Overall | 0.193 in / 4.90 mm |
| Cable Weight | 0.050 lb/ft / 74 g/m |
| — Inner Conductor — | |
| Inner Conductor — Material | Solid Silver-Plated Copper-Clad Steel |
| Inner Conductor — Diameter (in) | 0.0370 |
| Inner Conductor — Construction | Solid |
| — Dielectric — | |
| Dielectric — Material | PTFE (Polytetrafluoroethylene) |
| Dielectric — Diameter (in) | 0.1161 |
| Dielectric — Construction | Solid |
| — Outer Conductor / Shield — | |
| Outer Conductor — Type | Braid |
| Outer Conductor — Material | Double Silver-Plated Copper Wire Braid |
| Outer Conductor — Diameter (in) | 0.1620 |
| — Jacket — | |
| Jacket — Material | FEP, Brown |
III.Mechanical
| Bend Radius — Single / Installation | 1.93 in / 49.0 mm |
| Cold Bend Temperature (operating min) (°C) | -55 |
IV.Environmental
| Operating Temperature Range (°C) | -55 to +200 |
| Flame Rating | CMP (plenum) — FEP (derived from jacket) |
| UV / Outdoor Rating | Outdoor (FEP is UV-stable) (derived) |