Introduction
The Metra 44-EC204 is a 204-inch (518 cm) antenna extension cable designed to extend the reach of your car's radio antenna. This cable ensures a secure connection and includes 150pf impedance matching capacitors to prevent signal loss, maintaining optimal audio reception in various vehicle environments. It is engineered for both indoor and outdoor use, providing a reliable solution for antenna relocation or extended reach requirements.
Safety Information
- Ensure all vehicle power is off before installation to prevent electrical hazards.
- Avoid routing the cable near moving parts, sharp edges, or high-heat sources within the vehicle.
- Do not expose the cable to excessive force, kinking, or crushing, as this can damage internal wiring and affect performance.
- Verify that all connections are secure and free from moisture to prevent signal interference or short circuits.
Package Contents
- 1 x Metra 44-EC204 204-Inch Antenna Extension Cable
Setup
Follow these steps for proper installation of your antenna extension cable:
- Identify Connections: Locate the existing antenna cable from your vehicle's antenna and the antenna input on your car radio or receiver.
- Connect Male End: Connect the male coaxial end of the Metra 44-EC204 extension cable to the female output of your vehicle's antenna cable. Ensure a firm and secure fit.
- Route Cable: Carefully route the 204-inch extension cable from the antenna connection point to the location of your car radio. Avoid sharp bends, kinks, or areas where the cable could be pinched or damaged. Utilize existing cable channels or secure with cable ties if necessary.
- Connect Female End: Connect the female coaxial end of the Metra 44-EC204 extension cable to the male antenna input on your car radio or receiver. Again, ensure a secure and snug connection.
- Test Functionality: Turn on your car radio and test various stations to confirm proper signal reception. The integrated 150pf impedance matching capacitors are designed to prevent signal loss, ensuring clear audio.

Operating
The Metra 44-EC204 antenna extension cable is a passive component. Once correctly installed, it functions by extending the physical reach of your vehicle's antenna to the radio unit. No active operation is required from the user. Optimal performance is achieved when all connections are secure and the cable is routed without damage or excessive interference from other electrical components.
Maintenance
To ensure the longevity and continued performance of your Metra 44-EC204 antenna extension cable:
- Inspect Connections: Periodically check that the coaxial connections remain tight and free from corrosion or debris.
- Cable Integrity: Avoid subjecting the cable to sharp bends, excessive pulling, or crushing forces. While designed to be durable and weatherproof, physical damage can impair signal quality.
- Cleanliness: Keep the cable and its connectors clean and dry. Use a soft, dry cloth to wipe away any dust or moisture.
- Environmental Protection: Although suitable for indoor and outdoor use, protecting the cable from extreme environmental conditions (e.g., prolonged direct sunlight, harsh chemicals) can extend its lifespan.
Troubleshooting
If you experience issues with your antenna signal after installing the Metra 44-EC204 cable, consider the following:
- Poor Signal Reception:
- Verify that both ends of the extension cable are securely connected to the antenna and the radio. A loose connection is a common cause of signal degradation.
- Inspect the entire length of the cable for any visible damage, such as cuts, pinches, or severe kinks. Replace the cable if damage is found.
- Ensure the cable is not routed too close to other electrical components that might cause interference.
- No Signal:
- Double-check all connections. Ensure the male and female connectors are fully engaged.
- Test the antenna and radio directly without the extension cable to confirm they are functioning correctly independently.
Specifications
| Feature | Detail |
|---|---|
| Model Name | 44-EC204 |
| Cable Length | 204 inches (518 cm) |
| Connector Type | Coaxial Male-to-Female |
| Cable Type | Coaxial |
| Special Features | Tangle Free, Weatherproof, 150pf Impedance Matching Capacitors |
| Color | Black |
| Item Weight | 4 ounces (0.25 Pounds) |
| Indoor/Outdoor Usage | Indoor, Outdoor |
| Maximum Voltage | 5 Volts (DC) |
| Outer Material | Rubber |
Warranty and Support
The Metra 44-EC204 Antenna Extension Cable is covered by a Manufacturer Warranty. For specific details regarding warranty terms, duration, and how to make a claim, please refer to the official Metra Electronics Corp website or contact their customer support directly. Keep your purchase receipt as proof of purchase.
For technical assistance or further inquiries, please visit the Metra website or consult your product retailer.





