Night Operations

Night removes the visual toolbox: mirrors, ground signals, and aircraft spotting are gone. The radio becomes the primary signal, and the beacon’s design suddenly makes full sense.

What changes at night

Tool	Day	Night
Beacon	One signal among many	The primary signal
Mirror	15 km	Useless
Ground signals	km (visual)	Useless
Whistle	Local	Local, but carries differently in cold air
Fire	Visible	More visible

The night radio picture

Radio propagation changes modestly at night (see Tropospheric Ducting for the atmospheric side), but the practical difference is quieter bands: fewer consumer devices, so the beacon’s channel is cleaner. The Scanning the Band sweep often finds clearer channels at night.

The audio cues

At night, listening replaces looking:

• The burst rhythm: regular timing means a beacon, not interference (see Firmware TX Scheduler).
• The tone’s loudness guides the last meters (see Homing Technique).
• The Whistle Signals reply becomes the confirmation that a human is near.

The battery note

Night missions run longer and colder. The Winter Pack rules apply double: spare cells against the body, conservative power settings, and the Battery Field Swap skill rehearsed.

Related pages

• Signaling Techniques for the toolbox
• Emergency Response Scenarios for the scenarios
• Whistle Signals for the close-range code