What precaution should be taken to avoid inadvertent activation of the PRC 149?

The precaution of turning the switch only past the GPS position when ready to transmit is essential for preventing inadvertent activation of the PRC 149. This practice ensures that the device remains in a standby mode until it is intentionally activated for communication. By avoiding settings that allow for unintentional broadcasting or functionality, the user minimizes the risk of sending out signals without a purpose. This is especially important in sensitive operations where maintaining communication discretion is crucial.

While keeping the mode switch in the lowest position might seem like it would help prevent accidental use, it does not specifically address the potential for activation when the device is switched to a transmission-ready state. Ensuring the battery compartment is always closed is more of a measure for device integrity rather than preventing activation. Finally, using the device in extreme weather could pose other risks but is not directly related to the inadvertent activation of the device itself.