User's Manual

6.2 Security mode (voice scrambler)

For additional security, a voice scrambler function is available

as an optional accessory. The scrambler uses frequency inver-

sion to encrypt the transmission and will allow secure trans-

mission between compatible radios.

To enable Security mode press Shift followed by 0 (Scrm). The

display will show “Sec” indicating that Security mode is on.

To exit Security mode, press Shift followed by 0 (Scrm) again,

or press On/C. Security mode will be cancelled if the RS87 is

placed into another mode that requires the use of the PTT key

(i.e Hailer/Intercom) or if a DSC call is made/received.

6.3 Editing Latitude, Longitude and UTC

Normally, position and time data should be supplied to the

RS87 via a GPS or other navigational device connected to the

radio. However, if this is not possible, the position and time

can be entered manually -

Press Shift then 8 (Lat/Lon). The display will show “Enter Lat”.

Enter the Latitude using the numeric keypad (Fig 6.2). Use the

Call and MSG keys to move the cursor to correct any

errors. The cursor position is indicated by the number ﬂashing.

Enter a new number to overwrite the incorrect number.

RS87 VHF

Part No. E04297

ENTER LA T A

LA 52-B---

INT

Fig 6.2 - Manually entering position

The ﬁnal digit speciﬁes whether the Latitude is north or south

of the Equator - press VOL or VOL to toggle between N

and S.

Press Ok to conﬁrm and move on to entering the Longitude -

the display will show “Enter Long” - or On/C to abort entry.

Enter the Longitude using the numeric keypad. Use the Call

and MSG keys to move the cursor to correct any errors. The

cursor position is indicated by the number ﬂashing. Enter a

new number to overwrite the incorrect number.