Tyco Electronics MM23772

MM23772, Rev. B

7.16 STEALTH MODE

For some users, it is important to be able to turn off the radio’s display lights and side tones, but not the

radio traffic. For example, in covert operations, lights and sounds could inadvertently expose an otherwise

unobservable radio user. For this purpose, the radio has a Stealth feature that disables the radio display

light, indicator light and audible side tones.

When stealth mode is on, the radio continues to scan the programmed list of talk groups and the user can

key-up on the selected talk group.

7.16.1 Enabling Stealth Mode

Press the  or  buttons to scroll through menus until “StealthMenu” appears in the display. To

immediately activate Stealth Mode press the  or  button once. This activates Stealth Mode, exits the

Stealth Menu, and returns to the Dwell Display.

The display lights, indicator lights, and side tones are disabled. The stealth mode icon is displayed.

7.16.2 Disabling Stealth Mode

To re-enable all lighting, side tones and exit Stealth Mode, press any key other than PTT or Emergency.

This returns to the Dwell Display.

The display lights, indicator lights, and side tones are re-enabled. The stealth mode icon disappears.

With stealth mode on, pressing any radio button (other than the mic’s PTT button

or the emergency button) on front panel will immediately turn stealth mode off. For

example, pressing the  button on the front panel will turn stealth mode off.

7.17 ADJUSTING SIDE TONE AUDIO LEVEL

The radio sounds confirming tones called “side tones” when its buttons are pressed. Most users find this

audible confirmation helpful when navigating the menus. Side tone audio level can be adjusted or turned

completely off using the “Side Menu.”

For covert operations, it may be necessary to turn off side tones. For safety’s sake, turning off the radio

during covert operations is not recommended.

If the radio is operating properly but side tones are not heard when the menu buttons are pressed, the side

tones are probably turned off. To turn them back on, access the “Side Tone” menu and select a setting

other than “off.”

Use the following procedure set side tone level:

1. Press the  or  buttons to cycle through the menu until “Side Menu” is displayed.

2. Press  or  to change to the desired level (Off, Low, Medium, and High). To turn side tones

completely off, use the “Off” setting.