Coax Cable Loss Calculator
Calculate signal loss for LMR400, RG58, RG6, RG8, and other coax cables used in RF, LTE, WiFi, LoRa, ham radio, and 5G installations.
Why Coax Loss Matters
Even the best antenna can perform poorly if signal is lost through low-quality or excessively long coax cable.
This calculator helps estimate:
- Total cable loss
- Remaining signal strength
- Best cable type
- Installation optimization
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Total Loss:
Remaining Signal:
Cable Quality:
Recommendation:
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Common Coax Cable Types
| Cable | Loss | Best Use |
|---|---|---|
| LMR400 | Low | LTE / 5G / Outdoor |
| RG58 | High | Short Ham Radio Runs |
| RG8 | Medium | General RF Use |
| LMR600 | Very Low | Professional Towers |
Real-Life Example
A rural LTE installation originally used 100 feet of RG58 cable with a rooftop antenna.
Problems:
- Weak signal indoors
- Slow LTE speed
- High packet loss
After upgrading to LMR400:
- Signal improved by several dB
- Download speed increased
- Stable gaming and streaming
Coax Cable Diagram
[ ANTENNA ]
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LMR400 Cable
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[ LTE ROUTER ]
Signal Loss Occurs Along Cable Length
Recommended Product — LMR400 Cable
Professional low-loss coax cable ideal for:
- 5G antennas
- LTE routers
- Ham radio
- WiFi bridges
- Signal boosters
Recommended Product — N-Type Connectors
High-quality RF connectors for low-loss installations.
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Tutorial — How to Reduce Coax Loss
- Use low-loss cable like LMR400
- Keep cable runs short
- Avoid cheap connectors
- Minimize adapters
- Use proper grounding
- Install antenna closer to router if possible
Frequently Asked Questions
What is the best coax cable for LTE antennas?
LMR400 is one of the best choices for LTE and 5G because of its low signal loss.
Why is RG58 not ideal for long runs?
RG58 has higher attenuation, especially at high frequencies like LTE and WiFi.
Does cable length affect internet speed?
Yes. Longer cable runs increase attenuation and reduce signal quality.
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