Instruction manual

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c. Overload indicator
1) Microphone level (
transmission only
)
Lit when the microphone input is overloaded in transmitting voice.
A proper microphone input level will light the LED from time to time
when speaking into the microphone at a normal voice level. The
microphone level can be changed by adjusting the microphone level
controller.
Refer to the Presetting - Microphone Level chapter for details.
2) Input level indicator (for reception or standby)
To set the optimum level of audio from the transceiver (crucial for good
decoding of digital signals), this LED operates as an input level
indicator in receive mode, as follows:
LED flashing Input level too low
LED off Input level optimal
LED always on Input level too high
d. Mode Rotary Switch
There are 10 modes to chose from, as follows:
Position Mode Header Analog/digital switch
0 SSB 1.6 sec PTT->A
1 SSB 1.4 sec. PTT->A
2 SSB 1 sec. PTT->A
3 SSB 1.6 sec. PTT->B
4 SSB 1.4 sec. PTT->B
5 SSB 1 sec. PTT->B
6 FM (*) 1 sec. PTT->B Voice squelch
7 FM (*) 1 sec PTT->B All digital
8 FM (*) 0.5 sec PTT->B Voice squelch
9 FM (*) 0.5 sec PTT->B All digital
Details:
Header
stands for the header tone length. The ARD9000 synchronizes on
the header tones at the initial contact with other users.
PTT->A
allows to toggle between analog and digital transmission just by
shortly pushing the PTT button. The second press opens the microphone and
allows you to talk.
PTT->B
Pushing the PTT button half way through toggles the analog/digital
mode, continue and fully press the PTT to open the microphone and talk.
Voice squelch:
Allows you to hear both analog and digital transmissions.
All digital:
The only audio you will hear is when the ARD9000 detects and
decodes a digital transmission.
(*)
: In FM mode, the ARD9000 operates best when your transceiver squelch
is fully open.