Standard Horizon HX270S User Manual
Page 18
HX270S
Page 16
5.2 RECEPTION
1. Turn the POWER/VOLUME CONTROL knob clockwise to turn the trans-
ceiver on.
2. Press the SQL key, then press the [
] key until the
SQL level is 00.
3. Turn up the POWER/VOLUME CONTROL knob until
the noise or audio from the speaker is at a comfort-
able level.
4. Select a channel that has no signal being received (no one is transmit-
ting on the channel) and where only noise is heard.
5. Press the SQL key, then press the [
] key and stop immediately after
the noise disappears. This condition is known as the “Squelch Thresh-
old.” If the squelch is set to a higher level, weak signals may not be
received.
6. To change channels, press the [
] or [
] key.
7. The LCD and keypad are illuminated for 5 seconds when any key is
pressed. The lamp automatically turns off in 5 seconds.
8. To “lock” the channel so that it is not accidentally changed, hold down
the H/L key for about one second. This locks the [
] and [
] buttons
and all the front panel controls except the H/L, PTT and SQL keys. The
“
” symbol will appear on the display to indicate
that the keypad is locked. Hold down the H/L key for
about one second to unlock the keys. The “
” sym-
bol will disappear from the display.