Storing the Silvus StreamCaster

This section provides important information on how to properly store the Silvus StreamCaster 4240-EP.

When disassembling and storing the Silvus StreamCaster, it is best practice to detach the Silvus battery from the radio modem and store both items separately in their designated flight case compartments.

Important Guidelines for Storing the Silvus StreamCaster 4240-EP:

Never store the Silvus StreamCaster in the flight case while powered on and with the antennas detached. The high transmission power can cause significant damage to the radio module, particularly when the antennas are not installed.

Reflected Power and Overload: When a radio modem transmits, the energy must be radiated through the antenna. Without an antenna, the transmitted power has nowhere to go and reflects back into the radio’s circuitry, especially the transmitter. This can lead to overheating or damage to critical components, particularly the power amplifier.

Impedance Mismatch: Antennas are designed to match the radio modem's impedance. Without an antenna, a significant impedance mismatch occurs, preventing the efficient transfer of RF energy. This mismatch causes high voltage standing wave ratios (VSWR), which can result in damage to the modem.

The Silvus StreamCaster 4240-EP is equipped with advanced features like automatic power control, designed to protect the system in situations where the antennas are not properly connected. This feature, known as power throttling, reduces transmission power to prevent damage to internal components in the event of an antenna connection issue. Additionally, the device may issue warnings or errors if it detects that the antennas are not attached, further reducing the risk of damage due to reflected power.

However, even with these safeguards in place, it is still best practice to avoid powering on the radio without the antennas properly installed.

While power control features help protect the device, they are not a guarantee against potential damage if the issue persists.