SCRAMBLER (FM) <TK-5710/ TK-5710H/ TK-5810/ TK-5810H only>
/ ENCRYPTION (P25)
Note:
◆The Scrambler function can be used only in Conventional FM Operation. Additionally, the Voice Scrambler board must be installed before this function can be activated.
◆Ask your dealer for details concerning the Voice Scrambler board and the Encryption DES/AES settings.
Secure (Encrypted) Transmission
Press the key programmed as Scrambler/ Encryption to switch the transceiver to secure (encrypted) transmission.
• The 
•Pressing the microphone PTT switch after the Scrambler or Encryption function has been turned ON encrypts the transmitted signal.
•Each group member must activate their respective Scrambler/ Encryption functions to descramble the received signals.
Selecting the Scrambler Code (FM)
1Press the key programmed as Scrambler/ Encryption Code or press and hold the key programmed as Scrambler/ Encryption for 1 second, to enter Code Selection mode.
2Press the GRP 
and 
keys or rotate the CH control to increase or decrease the Scrambler code.
•There are 16 available Scrambler codes (1 ~ 16).
•Each group member must use the same code in order for the transceivers to descramble the received signals.
3Press the PF 1, PF 2, or PF 3 key to exit Code Selection mode.
Selecting the Encryption Key (P25)
1Press the key programmed as Scrambler/ Encryption Code or press and hold the key programmed as Scrambler/ Encryption for 1 second, to enter Key Selection mode.
2Press the GRP 
and 
keys or rotate the CH control to select the new Encryption key.
•There are 16 available Encryption keys (1 ~ 16).
•When a call is received, the transceiver will descramble the call as long as the received code is in the encryption list.
3Press the PF 1, PF 2, or PF 3 key to exit Key Selection mode.
Note: To return the transceiver to the default programmed Encryption key, select “PRESET”. However, if you delete the Encryption key {page 27}, it will not be recovered.
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