Heading-hold gyro: gyro that specifically measures the unwanted deflection angle and compensates until a corresponding angle
has been returned. See Gyros.
HELI: model type, rotary wing. See MODEL TYPE.
Helicopter radio: transmitter that includes helicopter-friendly switch and control layout and sufficient programming to
at least support a 5-channel helicopter. The 7CA and 7CH radios both contain all needed programming. The 7CH has a
more heli-friendly layout (through switch positioning and no ratchet on throttle for easier hovering)
High band: 72MHz equipment on a channel from 36 to 60. Receiver channel may be changed to any channel within the
high band without needing retuning. Transmitter must not be changed except by certified technician. . . . . . . . . . . . . .8
High Rate: See D/R,EXP.
Hover: to maintain a stationary position relative to a point on the ground.
HOVERING PITCH:seeHovering setups.
HOVERING THROTTLE:seeHovering setups.
Hovering setups: in-flight adjustments to pitch and throttle curves around center THROTTLE STICK position (the ideal
hovering point). .............................................................................71
IDLE-UP: separate condition created to allow inverted and other types of flight with a helicopter not easily achieved in
the normal condition. Note: the idle-ups are activated by activating their throttle curves. Also note that OFFSET is
available to create separate trims within each condition. ...............................................69
INH: makes a feature inactive/unable to be used. When a function is inhibited, it cannot be used even if the assigned
switch is ON. Turns off functionality without losing any settings. Only visible in specific features.
Inhibit: see INH.
Installation: radio installation and setup. ...........................................................16
Inverted: to fly a model upside-down.
Inverted flight control programming: not available in the 7C. Most modelers no longer use this "crutch" to fly inverted,
instead learning to recognize the model's behaviors when inverted and compensate appropriately.
Kill switch: (1) throttle cut switch to close carburetor (see THR-CUT, p. 33). (2) gasoline ignition engine kill switch
which removes spark to the plugs to stop the engine. .................................................56
78
