RG-214U Coaxial Cable (per meter)

The RG-214U Coaxial Cable is a high-performance cable designed for high-frequency signal transmission applications that require low signal loss (low attenuation) and excellent shielding against electromagnetic interference (EMI). It is often sold by the meter, especially for custom installations.

Common Applications

Telecommunications and Data Transmission
Radio Frequency (RF) and Microwave Transmission
Radio (Amateur Radio, CB, Broadcast)
Connecting wireless communication systems and base stations
Test leads and quality installations (where low Passive Intermodulation (PIM) and crosstalk are critical)
Military and Aerospace Systems (often meets Mil-Spec M17/75-RG214

Technical Specification

Electrical Characteristics (Per Meter / Per Unit Length)

Characteristic	Typical Value	Note
Characteristic Impedance	$50 \pm 2 Ohms$	Standard for RF, microwave, and data communications.
Capacitance	$\approx 101 pF/m$ ( $\approx 30.8 pF/ft$ )	Low capacitance is desirable for high-frequency signal integrity.
Velocity of Propagation (VOP)	$\approx 66%$	The speed of the signal as a percentage of the speed of light in a vacuum.
Max Operating Voltage	Up to $5 kV_{rms}$ (at sea level)	Indicates high power handling capability.
Attenuation	Varies by frequency, e.g., $\approx 14.3 dB/100m$ at $400 MHz$	Low signal loss over distance is a key benefit.

Key Construction Features (Per Meter)

Component	Material/Specification (Typical per meter)	Purpose
Inner Conductor	Stranded, Silver-Plated Copper ( $\approx$ 2.25 mm / 0.089″ diameter)	Carries the RF signal; silver plating improves conductivity at high frequencies.
Dielectric (Insulation)	Solid Polyethylene (PE) ( $\approx$ 7.2 mm / 0.285″ diameter)	Maintains precise separation between the inner conductor and shields to ensure a constant 50 $Ω$ impedance.
Shields (Outer Conductor)	Double Braid of Silver-Plated Copper ( $\approx$ 95-98% coverage)	Provides superior shielding against external noise and minimizes signal leakage.
Jacket	PVC (Polyvinyl Chloride), typically black ( $\approx$ 10.8 mm / 0.425″ overall diameter)	Protects the internal components from abrasion, moisture, and environmental factors.