FEDCON (Federal Employees and Contractors only)

security contractors

civilian employees security program

Federal Aviation Regulation (FAR)

Federal Bureau of Investigation (FBI)

Federal Emergency Management Agency (FEMA)

Federal Protective Service

Federal Security Service of the Russian Federation (FSB)

federal service

work in the mail room of Germany's Federal Intelligence Service

Federal Aviation Administration (FAA)

Federal Aviation Regulations (FARs)

active Federal service

Federal Communications Commission (FCC)

For Official Use Only (FOUO)

eyes only

night only computer generated image

double-action only

once-only approach

admittance by authorized credentials only

interact with character mode files only

Core Only

electrically erasable programmable read-only memory (EEPROM)

Failsafe only

Hexadecimal digits only, 0-9, A-F

Only arm after successfull EDT handshake

Only flash firmware if you are fully aware what you are doing.

Only MULTI mode currently supported

Return altitude (meters) - only applies in Fixed Altitude mode

RP (increment only)

RPY (increment only)

Heading are only shown when magnetometer is in use

This sets if the TX only beeps one-time versus playing a startup song