CODAN
HF 2000 AIRBONE SYSTEM
Description of Control Functions
CHANNEL SELECTION is performed by means of a single knob. The intensity of the channel number display
varies automatically with ambient light level, such that maximum readability is maintained from darkness to full
sunlight.
The OFF/VOLUME control applies power to the system and controls the receiver audio gain.
The PULL TEST function can be used to override the muting circuit to check receiver operation (noise) in the
absence of an audio signal.
The TUNE/SSB/CLARIFY control selects either the TUNE mode in the fully counter clockwise switch position, or
the SSB mode over the full clockwise rotation of the potentiometer. When in the SSB mode, the potentiometer
action performs the clarify function, i.e. can improve intelligibility in SSB receive. The centre position of the
control corresponds to minimum clarifier effect.
The TUNE mode is only used to adjust “STINGER” type antennas and antenna tuners. There is no audio
transmitted in this mode.
PRESET CONTROLS are provided for mute adjustment, microphone gain and display intensity. Adjustment
should be done only by a technician.
Operating Instructions
1.
Turn the aircraft master power switch ON.
2.
Turn the OFF/VOLUME control clockwise, to turn the system ON.
3.
Select the desired channel.
4.
Select SSB (mid position initially).
5.
Pull out the PULL TEST knob and set the noise volume to the desired level. Then push in.
6.
Adjust the CLARIFY control if necessary during SSB reception.
7.
To transmit, select HF Com on the selector panel and press the microphone key.
Note
Under conditions of marginal reception, it may be desirable to leave the PULL TEST knob pulled out during all
periods communication.
Codan Pty. Ltd. Graves Street, Newtonm S.A. 5074 Australia
06-00550
Summary of Contents for HF2000
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