This cable is 50 ohm and 3 feet long double shielded with foil and braid and PL-259 connectors on each end. All the connections inside are soldered and the cable is made of copper conductors with coax having PVC jacket. RG400 is generally useful up to 5000 watts PEP at HF frequencies below 30 MHz. Greater power capability and frequency range than RG-8X, yet similar physical size.

Use for short jumper for Palomar Engineers Noise Filters like CMNF-500-50 or use with Simple Dipole Feed line Choke (SDFLC) to make a 10 turn high wattage feed line choke. Also useful between radio devices such as transceiver and amplifier, antenna tuner, SWR meter, etc.

** Our Customers also used this RG400 Coax to make ham radio common mode chokes up to 5KW PEP

Physical Specifications:

• Inner conductor: Silver Plated Copper, Diameter: 19x0.203mm

• Dielectric/Insulation: PTFE, Diameter: 2.95mm

• Outer Conductor/Double-Shield: silver plated copper double braid , Diameter: 3.95mm

• Jacket: FEP, Diameter: 4.95mm

Electrical Specifications:

• Nom. Capacitance Conductor to Shield: 105 pF/m

• Nom. Characteristic Impedance: 50 Ω(ohm)

• Nom. Velocity of Propagation: 70%

• Min. Bend Radius(Install): 25mm

• Voltage Rating: 1900 VMS

• Max. Operating Frequency: 12400 MHz

• Operating Temperature Rating: -55℃ ～ +200℃

Attenuation:

• 100 MHz : 0.144 dB/m

• 400 MHz : 0.295 dB/m

• 1,000 MHz : 0.482 dB/m

• 5,000 MHz : 1.184 dB/m

• 11,000 MHz : 1.899 dB/m