Belden 9258 is a 50-ohm RG-8X coaxial cable designed for wireless transmission applications. Its key specifications are:

• Conductor: 16 AWG stranded bare copper (19 strands of 29 AWG), with a diameter of 0.057 inches.
• Insulation: Gas-injected foam polyethylene (FPE) with a diameter of 0.155 inches.
• Shielding: 95% coverage bare copper braid.
• Jacket: Polyvinyl chloride (PVC) with an overall diameter of 0.242 inches.
• Impedance: 50 ohms.
• Capacitance: Approximately 25.3 pF/ft.
• Velocity of Propagation: 82%.
• Attenuation:
  • 1 MHz: 0.3 dB/100 ft
  • 10 MHz: 0.9 dB/100 ft
  • 50 MHz: 2.1 dB/100 ft
  • 100 MHz: 3.1 dB/100 ft
  • 200 MHz: 4.5 dB/100 ft
  • 400 MHz: 6.6 dB/100 ft
  • 700 MHz: 9.1 dB/100 ft
  • 900 MHz: 10.7 dB/100 ft
  • 1000 MHz: 11.2 dB/100 ft
• Maximum Power Rating:
  • 10 MHz: 1,000 W
  • 50 MHz: 370 W
  • 100 MHz: 250 W
  • 200 MHz: 190 W
  • 400 MHz: 110 W
  • 700 MHz: 75 W
  • 1000 MHz: 60 W
• Operating Temperature Range: -40°C to +80°C.
• Minimum Bend Radius: 2.4 inches.
• Maximum Pulling Tension: 61 lbs.

This cable is suitable for applications such as point-to-point and point-to-multipoint wireless antenna communication, wireless microphones, two-way radios, amateur (Ham) radio, low-power FM, GPS, and RFID systems