Standard Horizon HX-471S - Manual (Page 25)

HX471S Page 23
6.2 RECEPTION
1. Turn the POWER/VOLUME CONTROL knob clockwise to turn the trans-
ceiver on.
2. Turn the SQUELCH CONTROL knob fully counterclockwise. This state
is known as “Squelch Off.”
3. Turn up the POWER/VOLUME CONTROL knob until the noise or audio
from the speaker is at a comfortable level.
4. Select the desired operating band among the VHF
Marine band, FRS band, MURS band, FM band,
AM band, and AIR band by pressing the [BAND]
key repetitively to switch between the bands.
5. Turn the squelch control fully to the left so au-
dio is heard.
6. Press the [
p] or [q] key to select a channel or
frequency that has no signal being received
(no one is transmitting on the channel)
7. Slowly turn the SQUELCH CONTROL knob clockwise and stop immedi-
ately after the noise disappears. This condition is known as the “Squelch
Threshold.” If the knob is turned clockwise past this point, weak signals
may not be received. No noise or no signal is heard until a signal is
received that exceeds the squelch threshold. Sometimes, a slight ad-
justment of the squelch threshold is needed, as some channels have a
higher noise level than others.
8. Press the [SCAN] key momentarily; the HX471S will begin scanning to-
ward a higher channel or frequency and will stop when it receives a
signal strong enough to break through the squelch threshold. Press the
[SCAN] key momentarily to channel the scanning. Refer to section 7.2
for programming channels into scan memory.
9. Please refer to section 16 for VHF Marine and section 3 for FRS and
MURS channel assignments.
10. If necessary, press the LAMP key to turn on the display illumination. The
lamp automatically turns off in about 5 seconds.
11. To “lock” the channel so that it is not accidentally changed, hold down
the LAMP key for about three seconds. This locks the [
p] and [q] keys
and all the front panel controls except the [H/L], PTT and LAMP keys.
The “
” symbol will appear on the display to indicate that the keypad
is locked. Hold down the LAMP key for about one second to unlock the
keys. The “
” symbol will disappear from the display..