Advantages and Disadvantages
Advantages
- Lower loss than 50Ω cable of comparable diameter
- Often a better impedance match to common wire antennas (dipoles, loops)
- Significantly cheaper than equivalent 50Ω cable
- Excellent shielding available (quad-shield RG-6)
- Works fine with an antenna tuner
Disadvantages
- Higher SWR on antennas with naturally low feedpoint impedance (Yagis, verticals with horizontal radials)
- F connectors require adapters for amateur radio equipment
- SWR at the radio may vary with feedline length, since the line Z₀ differs from what the radio expects
- Not recommended at legal limit power with high SWR (voltage stress)