JEFA Tech CA-400F-NM-SMA-35 coaxial cable 421.3" (10.7 m) N-type Black

Cable signal loss / attenuation
Not all cable is made the same! Our cable is industry leading with the lowest signal loss available. Signal loss is approximately 5db per 100ft of cable (1.6dB per 10m). Lower numbers are better. To determine your break-even point for cable length divide your antenna gain by 0.05. Example 5dBi antenna = 5 / 0.05 = 100ft. This means with a 100ft cable, you are now at zero net gain for your 5dB gain antenna. In situations where the signal outside is good (3-5 bars), you can typically increase the cable length past the break even without a problem. If the signal outside is poor (1 bar), it is recommended to keep the cable length as short as possible.

 

• 50 ohm impedance
• .405" outer diameter (same as RG-8, RG-213, LMR-400, etc)
• Lightweight, Flexible
• Thermoplastic Elastomer Jacket - softer, more flexible than polyethelene - full waterproofing and UV Protection
• Stranded Copper (7 x 0.036") Center Conductor
• Double Shielded for low loss and interference rejection
• First Shield: Bonded aluminum foil with 100% coverage
• Second Shield: Tinned copper braid with 98% coverage
• Foam Dieletric - adds to flexibility and performance