Tyco Electronics MM23772 - page 109

MM23772, Rev. B

109

10.17.3 Private Mode

Private Mode allows the radio to transmit encrypted messages and receive clear or private transmissions.

The radio transmits private if the group/channel is programmed for private operation and forced operation

is pre-programmed. If autoselect operation is pre-programmed and the radio is in the Private Mode, the

radio transmits in the mode of the received call if the hang time is active. If no hang time is active, the

radio transmits private.

Cryptographic keys are transferred to the radio using a cryptographic Keyloader. Up to seven (7) different

cryptographic keys, numbered 1-7, can be transferred from a Keyloader and stored in the radio. An

individual key is automatically selected on a per-group/channel basis according to the radio programming.

Groups and channels within the digital system can be programmed for keys 1-7 (private). Up to 8 banks

of 7 keys can be stored for private systems. The bank is specified per system.

When operating on a group or channel programmed for Private Mode, all transmissions are private

transmissions and the radio receives clear and private signals. The status icon is displayed when the

Private Mode is enabled. If the selected group or channel is programmed for auto-select capability, the

mode may be toggled between private and clear with the  key, then following the selection mode rules.

Radios programmed for forced private operation do not allow a change of the transmit mode.

10.17.3.1 Displaying the Currently Used Cryptographic Key Number

To Display the Currently Used Cryptographic Key Number for either the system encryption key (for

special call such as individual, phone, all, agency or fleet) or the group/channel key (for group or

conventional calls), perform the following procedure:

1. Press the  button.

2. Use the  or  button to select "DISP KEY."

3. Then use the  or  button to toggle between displaying the system key (Figure 10-8) or the

group/channel key (Figure 10-9).

Figure 10-8: System Encryption Key Display

Figure 10-9: Group/Channel Encryption Key Display

10.17.3.2 Key Zero

All cryptographic keys can be zeroed (erased from radio memory) by pressing the  button and while

still pressing this button, press and hold the  button. Press both buttons for 2 seconds. A series of beeps

Contents

Main MM23772, Rev. B Page Page Page Page Page Page Page 1 SAFETY CONVENTIONS MM23772, Rev. B 2 SAFETY TRAINING INFORMATION FCC OET Bulletin 65 Edition 97-01 Supplement C, Evaluating Compliance with FCC Guidelines for American National Standards Institute (C95.3 1992), IEEE Recommended Practice for the 2.1 RF EXPOSURE GUIDELINES DO NOT operate the radio without a proper antenna attached, as this may damage the radio and may 2.2 ELECTROMAGNETIC INTERFERENCE/COMPATIBILITY MM23772, Rev. B 3 OPERATING TIPS 3.1 EFFICIENT RADIO OPERATION 3.1.1 Antenna Care and Replacement 3.1.2 Electronic Devices MM23772, Rev. B 3.1.3 Aircraft 3.1.4 Electric Blasting Caps 3.1.5 Potentially Explosive Atmospheres MM23772, Rev. B 4 BATTERIES 4.1 CONDITIONING BATTERY PACKS 4.1.1 Conditioning NiMH battery packs 4.1.2 Conditioning NiCD Battery Packs 4.1.3 Additional Information 4.2 CHARGING BATTERY PACKS 4.3 BATTERY PACK USAGE MM23772, Rev. B 4.4 CHANGING THE BATTERY PACK 4.4.1 Removing the Battery Pack 4.4.2 Attaching the Battery Pack 4.5 BATTERY DISPOSAL MM23772, Rev. B 5 INTRODUCTION Page Page 6 OPTIONS AND ACCESSORIES MM23772, Rev. B 23 DESCRIPTION PART NUMBER 7 OPENSKY OPERATION 7.1 POWER ON/OFF AND VOLUME CONTROL 7.1.1 Power ON/OFF 7.1.2 Volume Control 7.2 CONTROLS MM23772, Rev. B 7.2.1 Buttons and Knobs Page 7.3 DISPLAY 7.4 RADIO STATUS ICONS 7.5 TRI-COLOR LED 7.6 LOG IN TO THE NETWORK MM23772, Rev. B 7.7 LOG OFF THE NETWORK 7.8 PERSONALITY 7.8.1 Profiles 7.8.2 Talk Groups MM23772, Rev. B 7.9 OPENSKY DISPLAY OVERVIEW 7.9.1 Displays Top Line 7.9.2 Displays Second Line 7.9.3 Dwell Display 7.10 ALERT TONES 7.11 BASIC MENU STRUCTURE Page Page Page Page Page MM23772, Rev. B 7.22 SCANNING 7.22.1 Selecting Scan Modes Page MM23772, Rev. B 7.23.1 Manually Dialing a Selective Call (P7270 Only) 7.23.2 Selective Call Using Speed Dial Page Page Page MM23772, Rev. B 7.26.1 Declaring an Emergency Call or Alert 7.26.2 Receiving an Emergency Call MM23772, Rev. B 7.26.3 Dismissing an Emergency 7.27 OPENSKY ENCRYPTION MM23772, Rev. B 7.27.1 Automatic Encryption 7.27.1.1 Using Automatic Encryption 7.27.2 Manual Encryption (P7270 Only) 7.27.2.1 Using Manual Encryption Page 8 EDACS OPERATION 8.1 TURNING ON THE RADIO 8.2 CONTROLS MM23772, Rev. B 8.2.1 Buttons and Knobs Page Page 8.3 DISPLAY 8.4 RADIO STATUS ICONS 8.5 TRI-COLOR LED 8.6 STATUS MESSAGES MM23772, Rev. B 8.7 ERROR MESSAGES DSP ERR ERR=XXXX ERR x 8.8 ALERT TONES Page Page Page Page MM23772, Rev. B 8.18.1 Menu Item Selection Process or to scroll nor is an additional press of the button required. 61 Table 8-4: Information Display MM23772, Rev. B 8.19 DIGITAL VOICE OPERATION 8.19.1 Clear Mode 8.19.2 Digital Mode 8.19.3 Private Mode Page MM23772, Rev. B 8.19.4.2 Transmitting an Encrypted Call 8.19.4.3 Scanned Group Calls 8.20 SCANNING TRUNKED GROUPS 8.20.1 Turning Scan On and Off Page Page 8.21 SCANNING TRUNKED SYSTEMS MM23772, Rev. B 8.22 EMERGENCY OPERATION 8.22.1 Receiving an Emergency Call 8.22.2 Declaring an Emergency Call 8.23 INDIVIDUAL CALLS 8.23.1 Receiving and Responding to an Individual Call Page Page Page MM23772, Rev. B 8.24.3 Dual-Tone Multi-Frequency: Overdial/Conventional Mode Page Page MM23772, Rev. B 8.29.1 Displays 8.29.2 DATA OFF Operation 8.29.3 DATA ON Operation 8.29.4 Exiting Data Calls MM23772, Rev. B 8.29.5 Scan Lockout Mode 8.29.6 Data Lockout Mode MM23772, Rev. B 9 PROJECT 25 (P25) CONVENTIONAL OPERATION 9.1 TURNING ON THE RADIO 9.2 CONTROLS MM23772, Rev. B 9.2.1 Buttons and Knobs MM23772, Rev. B 9.2.2 Keypad (P7250 Scan and P7270 System Models Only) Page 9.3 DISPLAY MM23772, Rev. B 9.3.1 Radio Status Icons 9.4 TRI-COLOR LED 9.5 STATUS MESSAGES MM23772, Rev. B 9.5.1 Error Messages DSP ERR ERR=XXXX 9.6 ALERT TONES 9.7 SYSTEM SELECTION Page Page Page Page 89 The TX POWER menu item, when selected, toggles LOW/HIGH power. It does not use or to scroll nor is an additional press of the button required. Table 9-3: Menu Item Information MM23772, Rev. B 9.17 DIGITAL VOICE OPERATION 9.17.1 Clear Mode 9.17.2 Digital Mode MM23772, Rev. B 9.17.3 Private Mode 9.17.3.1 Displaying the Currently Used Cryptographic Key Number 9.17.3.2 Key Zero MM23772, Rev. B 9.17.4 Private Operation 9.17.4.1 Receiving an Encrypted Call 9.17.4.2 Transmitting an Encrypted Call 9.17.4.3 Scanned Group Calls MM23772, Rev. B 9.18 GROUP CALLS IN P25 MODE 9.18.1 Transmitting a Group Call 9.18.2 Receiving a Group Call 9.19 INDIVIDUAL CALLS IN P25 MODE 9.19.1 Transmitting an Individual Call 9.20 EMERGENCY GROUP CALLS IN P25 MODE 9.20.1 Declaring an Emergency Group Call 9.20.2 Receiving an Emergency Group Call 10 CONVENTIONAL OPERATION 10.1 CONTROLS MM23772, Rev. B 10.1.1 Buttons and Knobs Page Page 10.2 DISPLAY MM23772, Rev. B 10.2.1 Radio Status Icons 10.3 TRI-COLOR LED 10.4 STATUS MESSAGES 10.5 ALERT TONES Page Page Page Page Page 107 Table 10-3: Menu Item Information MM23772, Rev. B 10.17 DIGITAL VOICE OPERATION 10.17.1 Clear Mode 10.17.2 Digital Mode Page MM23772, Rev. B 10.17.4 Private Operation 10.17.4.1 Receiving an Encrypted Call 10.17.4.2 Transmitting an Encrypted Call 10.17.4.3 Scanned Group Calls Page 11 TECHNICAL ASSISTANCE 11.1 IMMERSIBLE P7200 12 BASIC TROUBLESHOOTING BATTERY WARRANTY WARRANTY