Vertex Standard VX-4000L, Service Manual, Page: 8 / 80

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VX-4000 VHF Low-band Service Manual
Operating Manual Reprint
SQL (Squelch Level)
You can manually adjust the squelch level using
this function:
1. Press the assigned
PF
button
of the “ SQL ”. A
tone sounds and SQL appears on the display
with the current squelch level.
2. Rotate the
CHANNEL
selector knob to select
the desired level.
3. Press the this key. A tone sounds and the dis-
play returns to the normal channel.
Encryption (Option)
When the Voice Scrambler feature is enabled,
pressing the assigned
PF
button
of the “ Encryp-
tion ” toggles the Scrambler on and off.
A
DVANCED
O
PERATION