RG213 vs. LMR400 Coaxial Cable
RG213 vs. LMR400 Coaxial Cable: A Comprehensive Comparison
Introduction
When it comes to selecting the right coaxial cable, understanding the differences between RG213 and LMR400 is crucial. Both cables are widely used in telecommunications and RF applications, but they serve different purposes based on their characteristics. In this article, we’ll compare these two cables in terms of specifications, performance, and practical applications to help you make an informed choice.
Factors such as attenuation, durability, power handling, and cost-effectiveness play a significant role in determining which cable is better suited for your needs. Whether you’re setting up a wireless network or managing amateur radio communication, this guide has you covered.
Key Specifications of RG213 and LMR400
The following table highlights the key specifications of RG213 and LMR400 cables, providing a side-by-side comparison:
| Specification | RG213 | LMR400 |
|---|---|---|
| Impedance | 50 Ohms | 50 Ohms |
| Attenuation (30 MHz) | 1.5 dB/100 ft | 0.7 dB/100 ft |
| Frequency Range | Up to 1 GHz | Up to 6 GHz |
| Outer Diameter | 0.405 inches | 0.405 inches |
| Weight | 0.068 lbs/ft | 0.066 lbs/ft |
Attenuation and Signal Loss
Attenuation, or signal loss, is one of the most critical factors when choosing a coaxial cable. LMR400 significantly outperforms RG213 in this area, particularly at higher frequencies. For example, at 100 MHz, the attenuation for RG213 is approximately 2.5 dB/100 ft, while for LMR400, it is around 1.2 dB/100 ft.
This makes LMR400 an ideal choice for applications requiring long-distance transmission with minimal signal loss. Conversely, RG213 may suffice for lower-frequency applications or shorter cable runs where attenuation is less critical.
| Feature | RG 213 | LMR 400 |
|---|---|---|
| Impedance | 50 Ohms | 50 Ohms |
| Conductor Material | Solid Copper | Copper-Clad Aluminum |
| Dielectric Type | Polyethylene | Foam Polyethylene |
| Outer Jacket Material | PVC (Weather-resistant) | UV-resistant Polyethylene |
| Signal Loss (100 MHz) | ~3.0 dB per 100 ft | ~1.5 dB per 100 ft |
| Frequency Range | Up to 1 GHz | Up to 6 GHz |
| Durability | High mechanical durability | Superior UV and environmental resistance |
| Flexibility | Less flexible, more rigid | Highly flexible, easier to handle |
| Weight | Heavier due to solid copper conductor | Lighter due to copper-clad aluminum conductor |
| Typical Applications | Military, amateur radio, general RF communication | Wireless networks, cellular boosters, satellite systems |
| Cost per Foot | Lower cost | Higher cost |
| Attenuation at 500 MHz | ~7.5 dB per 100 ft | ~3.1 dB per 100 ft |
| Power Handling | Good for medium power applications | Excellent for high power over long distances |
| Installation Ease | Requires more effort in tight spaces | Easier to install in tight and confined spaces |
| Environmental Suitability | Good for general outdoor use | Best for high UV and extreme outdoor environments |
| Longevity | Durable for short to medium-term outdoor use | Long-lasting, especially in harsh conditions |
| Ideal Cable Lengths | Short to moderate runs | Long cable runs where low loss is critical |
| Budget Consideration | Affordable and cost-effective | Higher upfront cost but better long-term value |