RG59 vs RG6: Attenuation Decides
Both cables are 75 ohm and both use F connectors. The difference is attenuation, which grows with frequency and length.
Quick Answer
| Attribute | RG59 | RG6 |
|---|---|---|
| Centre conductor | Thinner, often stranded | Thicker, copper clad steel or solid |
| Attenuation at high frequency | Higher | Lower |
| Flexibility | More flexible | Stiffer |
| Best for | Short analogue video, CCTV | Satellite, cable, broadband, long runs |
| Typical connectors | F, BNC | F, compression |
Where Each Wins
RG6
Satellite dishes, cable broadband, terrestrial aerial distribution and any long run. The modern default.
RG59
Short analogue video runs, older CCTV installations and patch cords where flexibility matters.
Either works
Subwoofer line level connections at short lengths, though RG6 shielding is preferable.
Neither suits
Ethernet or any data application requiring different impedance.
Choosing by Frequency and Length
- Estimate the highest frequency in use.
- Estimate the run length.
- If either is high, choose RG6.
- Use compression fittings for outdoor or permanent installs.
- Match shielding to the environment.
Real-World Applications
- Satellite and cable television.
- Broadband entry cabling.
- CCTV camera runs.
- Audio line level distribution.
Related Guides
For the standard cable, read RG6 coaxial cable. For subwoofer use, see subwoofer RCA cables. For conversion, start with coaxial to HDMI adapter.
FAQ
Is RG6 always better?
For high frequency and long runs, yes. For short flexible runs, RG59 is fine.
Can I use RG59 for satellite?
Not recommended. Satellite frequencies need RG6.
Does the connector matter?
Yes. Compression fittings outperform twist on ones.
Can they be joined?
With F couplers, but each joint adds loss.