ADI AR-446 - Transmitter Operation; Transmit Basics

Note
The frequencies shown above are the default frequencies after a
microprocessor reset. If the display shows incomplete data or you
think the displayed frequency is in error you should reset the
Microprocessor. The 10MHz digit “.” Wil flash if PLL is
unlocked.
3. Rotate the VOL control clockwise until a signal or noise is heard
coming from the speaker.
4. Rotate the tuning control or press the microphone UP/DN
switches to select an open channel. Then rotate the SQ control
clockwise until the noise just disappears and the BUSY indicator
turns off. This point is known as the Squelch Threshold point. The
squelch contro! must be adjusted to this setting for the Sean
functions to operate properly.
5. Select the desired operating frequency using the microphone or
tuning control. When a signal is received the S-meter will deflect
and the BUSY indicator will turn ON.
Caution
Turn off the transceivers POWER switch before you start or stop
your vehicles engine, or your home power supply.
5-2-2 Frequency Selection
You can change the dial frequency while in the VFO mode. The
frequency can then also be stored in memory, or in the call channel
using the techniques that will be described in this manual.
MA key VFO key VFO key CALL key
CALL key
MEMORY channel mode. CALL channel mode
MR key
@ VFO Mode Operation Frequency Selection
1. Press the VFO/MpbV key to select the VFO mode.
2. Rotate the tuning control or press the microphone UP/DN
switches to select the desired frequency.
@ Memory Channel Selection
1. Press the MR/M key.
2. Rotate the tuning control or press the microphone UP/DN
switches to select the desired memory channel.
@® CALL Channel Selection
Press the CALL key to select the Cail channel.
5-2-3 Frequency Step Selection
The frequency step is indicated in the chart below.
Channel step 521012 .5=15=20=25—50
To select the desired tuning or scan step size use the following
procedure:
1. Press the
2. Press the
light in t
3. Press the
The curre
amie
eY M D
4. Rotate th
microphc
display.
5. To comp
key on ti
seconds
normal fr
5-3 TRi
Caution
1. Ensure
(SWR)
to tran
damag:
2. Always
transm