The antenna of the RC can be rotated in a vertical or horizontal position. When in Helicopter Mode, the vertical position will provide best signal quality; when in Airplane Mode, the horizontal position is more favourable.
For take-off and landing, antenna should be set to its vertical position. For regular flights, this position can be kept throughout the complete flight.
When flying far from the home point and requiring to control Marlyn using the RC, rotate the antenna to a horizontal position.