SECTION 9
PA-28-181, ARCHER III SUPPLEMENT 15
ISSUED: JULY 12, 1995 REPORT: VB-1611
REVISED: JANUARY 2, 2001 5 of 6, 9-87
SECTION 9
PA-28-181, ARCHER III SUPPLEMENT 15
ISSUED: JULY 12, 1995 REPORT: VB-1611
REVISED: JANUARY 2, 2001 5 of 6, 9-87
SECTION 7 - DESCRIPTION AND OPERATION (continued)
ANT (Antenna) Mode
The ANT (antenna) mode cannot be used for navigation; this mode enhances
audio reception clarity and is normally used for station identification.
ADF Mode
Automatic Direction Finder (ADF) mode is used for navigation. This mode
activates the bearing pointer. The bearing pointer will point in the direction of
the station relative to the aircraft heading.
Frequency Selector Controls
Three controls are used to select the system operating frequency. The right
hand control selects 1 - kHz increments, the center control 10 - kHz
increments, and the left hand control 100 - kHz increments.
Self Test Switch
Pressing and holding the spring loaded self test switch while in the ADF mode
will cause the bearing pointer to rotate 90 degrees from its prior position if the
ADF-650 system is operating properly. When the test switch is released, the
bearing pointer should promptly return to its starting point. At this time,
normal operation is restored.
ON/OFF/VOL/ID Control
This control performs three independent functions. In full ccw position, no
power is applied to the system; rotating the control cw applies power and
continued rotation increases volume. Pulling the knob out enhances the Morse
code station identifier when background noise is present; push the knob to hear
voice transmissions. A good operating practice is to pull the knob out for
station identification purposes and then push it back in after positive
identification has been made.
SECTION 7 - DESCRIPTION AND OPERATION (continued)
ANT (Antenna) Mode
The ANT (antenna) mode cannot be used for navigation; this mode enhances
audio reception clarity and is normally used for station identification.
ADF Mode
Automatic Direction Finder (ADF) mode is used for navigation. This mode
activates the bearing pointer. The bearing pointer will point in the direction of
the station relative to the aircraft heading.
Frequency Selector Controls
Three controls are used to select the system operating frequency. The right
hand control selects 1 - kHz increments, the center control 10 - kHz
increments, and the left hand control 100 - kHz increments.
Self Test Switch
Pressing and holding the spring loaded self test switch while in the ADF mode
will cause the bearing pointer to rotate 90 degrees from its prior position if the
ADF-650 system is operating properly. When the test switch is released, the
bearing pointer should promptly return to its starting point. At this time,
normal operation is restored.
ON/OFF/VOL/ID Control
This control performs three independent functions. In full ccw position, no
power is applied to the system; rotating the control cw applies power and
continued rotation increases volume. Pulling the knob out enhances the Morse
code station identifier when background noise is present; push the knob to hear
voice transmissions. A good operating practice is to pull the knob out for
station identification purposes and then push it back in after positive
identification has been made.
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