Piper SEMINOLE 2013 Pilot Operating Handbook page 332

SEcTION 9
SUPPLEMENT 4
SEcTION 7 - DEScRIPTION AND OPERATION (continued)
Legend - figure 1
1. Mode Annunciation - Antenna (ANT) is selected by the "out" position of
the ADF button. This mode improves the aural reception and is usually
used for station identification. The bearing pointer is deactivated and
will park in the 90° relative position. Automatic Direction Finder (ADF)
mode is selected by the depressed position of the ADF button. This
mode activates the bearing pointer. The bearing pointer will point in the
direction of the station relative to the aircraft heading.
2. Active Frequency Display - The frequency to which the ADF is tuned is
displayed here. The active ADF frequency can be changed directly when
either of the timer functions are selected.
3. Beat Frequency Oscillator (BFO) - The BFO mode, activated and
annunciated when the "BFO" button is depressed, permits the carrier
wave and associated morse code identifier broadcast on the carrier wave
to be heard.
CW signals (Morse Code) are unmodulated and
no audio will be heard without use of BFO. This
type of signal is not used in the United States
air navigation. It is used in some foreign countries
and marine beacons.
4. Standby Frequency Annunciation (FRQ) - When FRQ is displayed, the
STANDBY frequency is displayed in the right display. The STANDBY
frequency is selected using the frequency select knobs. The selected
STANDBY frequency is put into the ACTIVE frequency window by
pressing the frequency transfer button.
5. Standby Frequency Display - Either the standby frequency, the flight
timer, or the elapsed time is displayed in this position. The flight timer
and elapsed timer are displayed replacing the standby frequency which
goes into "blind" memory to be called back at any time by depressing
the FRQ button. Flight time or elapsed time are displayed and
annunciated alternatively by depressing the FLT/ET button.
REPORT: VB-2307
9-32, 8 of 10
NOTE
PA-44-180, SEMINOLE
ISSUED: June 5, 2013