a Hytera company Quick Reference Guide SC21 series hand-portable radio
16 1 15 2 14 13 12 3 11 4 10 5 9 6 7 8 1 Emergency button 2 Antenna 3 Rugged Accessory Connector (sRAC) 4 Centre Context key (Groups, Status, Profiles) 9 Navigation keys 10 Green key (Select/Send) 11 Left Context key 12 Colour display with backlight 13 Earpiece for full-duplex calls.
25 17 24 18 23 22 19 21 20 17 Side buttons A/B (soft keys) 18 PTT button 19 Side button C (soft key) 20 Digital Accessory Connector (sDAC) 21 Battery 3 22 External Antenna Connector 23 RFID tag 24 Accessory attachment mounting points 25 Loudspeaker used for halfduplex calls
Power on Press and hold (2 seconds) the Red Power off From the Home screen, press and hold (2 seconds) the Red key, then follow the instructions to power off. Home screen The Home screen displays when the radio powers on and when it is idle. To quickly get back to the Home screen, press and hold (2 seconds) the Red key. Menu To enter the menu, from the Home screen press the Menu context key. Use the navigation keys to scroll through the menus and options.
Alarm Call WARNING! Do not hold the radio close to your ear. Press and hold (2 seconds) the Emergency button. Press the PTT button and speak into the top microphone. If your radio is customised for ‘live microphone’ you can speak with out holding the PTT button for a period of time. Make a Group call WARNING! Do not hold the radio close to your ear. Press and hold the PTT button and speak into the top microphone.
Change the talkgroup From the Home screen, press the Groups context key. The Talkgroup Selection box appears showing the current selected talkgroup and folder. Directional arrows displayed under the talkgroup name indicate that there are more talkgroups available in the current folder. Rotate the Navi-knob to scroll through the talkgroups. To attach to a talkgroup, press the Select context key. Change the talkgroup folder From the Home screen, press the Groups context key.
Send a Status message From the Home screen, press the Groups context key 2 times. Use the navigation keys to scroll through the status messages. To send the message, press the Send context key, select the Send to Default option (or choose another destination such as your talkgroup, a contact in your phone book or dial the number) and press the Green key. Switch between Day & Night modes From the Home screen, press the Menu context key. Select Options > Settings > Display Settings > Day/Night Mode.
Green: The radio is in a call and receiving. Red: The radio is in a call and transmitting. Red (flashing): You are receiving an Alarm call from another radio user or the radio is attempting to connect to the network or the battery charge level is low. Orange (flashing): Incoming telephone call or SDS/Status message. Orange (intermittent four flashes): Transmit Inhibit mode is active. The radio cannot transmit.
