User guide

ASTRO Digital Spectra and Digital Spectra Plus Model W4, W5, W7, and W9 123
Secure Operation
Transmit a Private Message
System Considerations
• Trunked Systems only: If you press the PTT button when no
secure-voice channel is available, the display shows
NO SEC (W4,
W5, W7) or
NO SECURE (W9), and a continuous talk-prohibit tone
sounds until you release the PTT button.
• Analog trunking systems: You are not allowed to change from
a secure transmission to a clear transmission during a secure
trunked call. If you attempt to change from a secure to a clear
1 Press the D button to turn on
the coded mode.
Some radio modes may have
secure automatically set on
or off if the mode-strapped
Secure feature is enabled.
The current key is displayed
if multi-key has been
enabled.
Note: If the coded mode is selected, the D is on. If the standard
(clear) mode is selected, the
D indicator is off.
2 Monitor the mode to be sure
it is not in use.
3 Press and hold the PTT
button to transmit.
The XMIT indicator lights,
and the display shows the
current key selected when
transmitting in the coded
mode, if multikey and Display
on PTT are enabled.