Coaxial Cable Types (RG Series) vs. XLR 3-Pin
Comparing 2 standards across 13 specifications. 13 key differences identified.
Coaxial cables transmit high-frequency radio frequency (RF) and television signals under MIL-C-17 standards through a concentric center conductor, dielectric insulator, metallic shield, and outer jacket, categorized into 75-Ohm video/broadband series (RG-6, RG-59, RG-11) and 50-Ohm wireless/RF series (RG-58, RG-8X, LMR-400).
Standard 3-pin XLR audio connectors use Pin 1 for chassis ground/shield, Pin 2 for the positive (hot) signal, and Pin 3 for the negative (cold) signal. 48V phantom power is supplied equally across Pins 2 and 3 relative to Pin 1.
Specification Comparison Table
13 Parameters| Parameter / Spec | ||
|---|---|---|
|
Governing Standards
|
MIL-C-17 / SCTE (Society of Cable Telecom Engineers) / ANSI/TIA-568 | — |
|
RG-6 / RG-6 Quad Shield (75Ω)
|
Center Conductor: 18 AWG (1.02 mm) | Outer Dia: 6.86 mm (0.270") | Satellite TV, Cable DOCSIS 3.1, HDTV Antennas | — |
|
RG-59 (75Ω Legacy / CCTV)
|
Center Conductor: 20–22 AWG (0.81 mm) | Outer Dia: 6.15 mm (0.242") | Baseband analog CCTV, short-run composite video | — |
|
RG-11 (75Ω Long-Distance Drop)
|
Center Conductor: 14 AWG (1.63 mm) | Outer Dia: 10.3 mm (0.405") | Heavy low-loss underground long-run drops | — |
|
RG-58 (50Ω RF / Two-Way Radio)
|
Center Conductor: 20 AWG (0.90 mm) stranded | Outer Dia: 4.95 mm | CB Radio, amateur VHF/UHF, Wi-Fi pigtails | — |
|
LMR-400 (50Ω Ultra Low-Loss)
|
Center Conductor: 10 AWG (2.74 mm) solid copper-clad aluminum | Cellular towers, 2.4/5GHz Wi-Fi antenna masts | — |
|
Impedance Matching Rule
|
Never mix 50Ω and 75Ω systems; impedance mismatch causes high Standing Wave Ratio (SWR) and RF reflections | — |
|
Connector Family
|
— | Circular Audio Interconnect (Cannon XLR) |
|
Conductors / Contacts
|
— | 3 (Pins 1, 2, 3 + Shell) |
|
Signal Format
|
— | Balanced Analog Audio / AES3 Digital |
|
Standard Balanced Pinout
|
— | Pin 1: Ground/Shield | Pin 2: Hot (+) | Pin 3: Cold (-) |
|
Phantom Power Support
|
— | 48V DC (+/- 4V) IEC 61938 P48 |
|
Primary Applications
|
— | Professional studio microphones, PA live sound, mixer connections, stage snakes |