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The HAVOC firmware may be useful if you're feeling playful.

Use

Play dead

This mode is placed at the top of the main menu list to make it quickly operable in case of emergency (power on, select, select). The purpose of this mode is to fake a blocking error to prevent a suspecting person to inspect and guess what the other modes do. The Portapack will continue playing dead even after a power cycle, the only way to exit the mode is to enter the "secret" key combination entered in Setup -> Play dead and pressing select. It is also possible to exit the mode by reprogramming the device. The key combination has a max length of 10 directional key presses. When Amnesia is enabled, entering the play dead mode will erase the battery-backed RAM (last tune-in frequency, settings...). When Default start is enabled, play dead is always activated on power up (act as "login").

RDS TX

Basic Radio Data System transmitter in a silent FM multiplex. For now, only the Program Service Name can be set.

LCR TX

Basic Langage de Commande Routier frame generator and transmitter.

Whistle

Tone generator in AM or FM.

Moltonel

FM tone detector with sweep scan.

Bigfoot

Displays a graphical spectrum representation across a large frequency span.

Frequency manager

Todo.