PackTenna Mini In-Line RF Feedline Chokes are designed to suppress RF interference caused by common mode current flowing from the antenna feed point back to the radio. This type of current can disrupt radio performance and affect nearby equipment.

In-line chokes are recommended for all end-fed antennas when operating above 20 watts. While you may not experience issues immediately, RF interference can occur as you increase power, change bands, adjust coax length, or reposition the antenna.

Unlike simple ferrite bead solutions that typically provide 50–100 ohms of impedance, the PackTenna choke uses a ferrite core with multiple turns of coax to deliver thousands of ohms of impedance. It uses RG-316 coax with a PTFE dielectric and is safely operated at up to 100 watts. BNC connectors on both ends make it easy to integrate with PackTenna coax cables. For best results, place the choke midway between the antenna and the radio.

Key Features

- High Impedance: Ferrite core design delivers thousands of ohms of choking impedance, outperforming standard ferrite bead setups.

- Compact and Compatible: BNC connectors ensure easy integration with PackTenna systems and other portable antennas.

- Effective RF Interference Control: Minimizes common mode currents that can cause equipment malfunction, especially at higher power levels.

Additional Features and Specifications:

• Core Type: Ferrite with multiple coax turns

• Coax Type: RG-316 with PTFE dielectric

• Power Rating: 100W max (SSB/CW/Digital)

• Connector Type: BNC (male/female)

• Recommended Use: End-fed antennas above 20W RF power

• Choking Impedance: Thousands of ohms (varies by frequency)

• Placement: Midpoint between antenna and radio