VXA-300 P
ILOT
III
O
PERATING
M
ANUAL
5
C
ONTROLS
& C
ONNECTORS
(
S
IDE
P
ANEL
)
PTT
(Push To Talk) Switch
Press this button to transmit when you are operating
in the COM band. Release this button to return to the
“Receive” mode. See page 14 for details.
MONITOR
Switch
This button may be pressed to “open” the squelch
manually, allowing you to listen for very weak sig-
nals. Press and hold this button for 2 seconds to “open”
the squelch continuously. Press this button again to
resume normal (quiet) monitoring. See page 13 for
details.
EXT DC
Jack
When an external 12-Volt DC power source is avail-
able, you may connect the (optional)
E-DC-5B
Ex-
ternal DC Cable here.
1) Do not allow the
VXA-300
to become sub-
merged in water while the rubber cover is
removed.
2) Do not connect any wire to this jack if that wire is
connected directly to a 28-Volt DC source. Connect-
ing the
VXA-300
directly to a source which exceeds
15.0 Volts DC will result in damage to the unit, and
this type of damage is not covered by the Limited
warranty on this product.