Introduction

RG11 coaxial cable is a low-loss, long-distance RF transmission wire that is commonly used in CATV, satellite, broadband, and antenna applications. Compared to smaller coaxial cables such as RG6 or RG59, RG11 has lower signal attenuation, making it excellent for high-frequency and long-run installations.

This blog describes the various varieties of RG11 cable, their characteristics, specs, and applications, as well as a step-by-step instruction to building RG11 cable for antenna setup.

What is RG11 cable?

RG11 is a 75-ohm coaxial cable designed to transmit high-frequency RF signals over long distances with low loss. Its greater diameter and thicker dielectric offer better shielding and lower attenuation.

Types of RG11 Cables

1. RG11/U (standard RG11).

Solid copper or copper-clad steel center conductor.

Foamed polyethylene dielectric.

Aluminum foil plus braided shield.

Ideal for both indoor and outdoor use.

2. RG11 Quad Shield.

Two layers of foil, plus two layers of braid

Excellent EMI and RFI protection.

Used in heavy interference conditions.

3. RG 11 Direct Burial Cable

Gel-filled or waterproof jacket.

UV-resistant outer sheath.

Designed for underground installation.

4. RG11 Plenum Rated (CMP)

Fire-resistant jacket

Low smoke and toxicity.

Used in commercial buildings and air-handling areas.

5. RG11 CCS vs Solid Copper

CCS (Copper-Clad Steel): stronger, cost-effective, commonly used in CATV.

Solid Copper: Lower DC resistance, ideal for RF and antenna systems.

Key Features of the RG11 Cable

Low Signal Loss: Suitable for lengthy wire runs

High Frequency Support: Works well up to 3 GHz.

Excellent shielding: Reduces noise and interference.

Durable construction, suitable for severe conditions.

75-Ohm impedance is optimized for television, broadband, and RF systems.

RG11 Cable Specifications

Applications for RG11 Cable

1. Antenna Systems.

VHF and UHF antennas

GNSS/GPS antenna extensions

Base station feeder cables

2. CATV/Broadband

Long-distance cable television distribution

Internet backbone links

3. Satellite Communications

LNB-receiver connections

Outdoor antenna installations

4. RF and Telecommunications Infrastructure

Signal dispersal in industrial settings.

RF Test Setups

5. CCTV and Video Transmission

Long-distance analog and HD video streams.

How to Assemble RG11 Cable for Antenna Configuration

Required Components.

RG 11 coaxial cable

Compatible connector (F-Type, N-Type, or SMA with an adaptor)

RG11 compression or crimping tool

Cable stripper

Antenna with 75-Ohm input

Weatherproof tape or heat shrink

Step-by-step Assembly Process

Step 1: measure and cut.

Measure the required cable length.

Cut cleanly with a coaxial cable cutter.

Step 2: Strip the cable.

Strip approximately 20 mm of the outer jacket.

Fold back the braided shield evenly.

Expose the dielectric without harming the conductor.

Step 3: Prepare the Center Conductor.

Ensure that the central conductor is straight and tidy.

Trim the dielectric to the manufacturer's specified length.

Step 4: Attach the Connector.

Insert the cord completely into the connector.

Ensure that the conductor reaches the connector pin.

Use a compression or crimp tool to fasten.

Step 5: Connect to the antenna.

Connect the connector to the antenna RF port.

Maintain impedance matching for 75 Ω systems.

Avoid making severe curves near the junction.

Step 6: Weatherproofing (for Outdoor Use)

Use self-amalgamating tape.

Add heat-shrink tubing.

Seal connectors to prevent moisture intrusion.

Match antenna and equipment impedance.

Best Practices for RG11 Antenna Installation

Keep cables as short as feasible.

Avoid tight bends (minimum bend radius = 10× cable diameter).

Use adequate grounding for outside antennas.

Select solid copper RG11 for RF-critical applications.

Match antenna and equipment impedance.

RG11 and RG6 (Quick Comparison)

Conclusion

RG11 coaxial cable is an excellent choice for long-distance, low-loss RF and antenna installations. RG11 enables dependable signal transmission in challenging settings thanks to its high shielding, excellent frequency performance, and sturdy construction. When properly built and connected with the appropriate connectors, RG11 dramatically improves antenna system efficiency and signal integrity.

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