Iridium Extreme - Charging, USB, Antenna Adapters – BlueCosmo

The Iridium Extreme® includes two interchangeable adapters that connect to the bottom of your phone. These adapters are required when charging, connecting the USB data cable, or attaching an external antenna. Each adapter is designed to provide a secure and reliable connection for external accessories while maintaining the phone’s rugged integrity.

Important: When an adapter is connected, the phone’s internal antenna is disabled. Do not leave an adapter attached unless you are charging or using an external antenna. Otherwise, the phone will not connect to the Iridium network.

1. Charging and USB Adapter

Use this adapter when:

Charging your Iridium Extreme
Connecting to a computer with the USB data cable

This adapter allows charging and data access while using the phone’s internal antenna.

(Image: Iridium Extreme Charging/USB Adapter attached to phone. Adapter used for charging or USB connection with internal antenna.)

2. Charging, USB, and Antenna Adapter

Use this adapter when:

Charging the phone
Connecting a wired external antenna

This adapter includes a TNC female connector, compatible with the 5-foot external antenna supplied with your phone. It allows charging and data connectivity while the phone is connected to an external antenna.

(Image: Iridium Extreme Charging/USB/Antenna Adapter with TNC connector. Adapter used for charging, USB data, and external antenna connection.)

Installing an Adapter

Follow these steps to install either adapter on your Iridium Extreme:

Open the accessory connector cover on the bottom of the phone and fold it back to the rear retaining clip.
Select the correct adapter and orient it so that the Iridium logo faces forward.
Press the adapter upward until the side clasps click into place and the connection feels secure.
Proceed with your chosen setup (charging, data, or antenna connection).

Tip: Ensure the adapter is fully locked before connecting any cables. A loose connection may prevent charging or data transfer.

Using the External Antenna Adapter

The Antenna Adapter enables you to connect the Iridium Extreme to an external antenna, improving signal reception in areas where the internal antenna is blocked, such as inside vehicles, vessels, or buildings.

Connection Steps

Confirm the Charging, USB, and Antenna Adapter (with the TNC female port) is installed on your phone.
Connect the external antenna cable (TNC male) to the adapter’s TNC female connector.
Tighten the connection until snug — do not overtighten.
Position the external antenna outdoors or in a location with a clear, unobstructed view of the sky.
Power on your Iridium Extreme and check the display for strong signal bars and registration on the Iridium network.

Best Practices

Always remove the adapter when not in use to protect the connector port.
Keep the accessory cover closed when no adapter is attached to prevent dust and moisture entry.
Ensure all connections are tight and secure, especially in mobile or marine installations.
Avoid bending or pulling on cables connected to the adapter.
Store the unused adapter in a dry, protected place.

Example of an Iridium Extreme device using the antenna adapter and a magnetic mount antenna:

(Image: Iridium Extreme connected to magnetic-mount external antenna. Iridium Extreme using external antenna via TNC connector for improved signal reception.)