INSTRUCTION MANUAL SC- 580, SC- 581 UHF TRUNKING / CONVENTIONAL TRANSCEIVER SC- 280, SC- 281 VHF TRUNKING / CONVENTIONAL TRANSCEIVER Page 1/11
- FCC NOTICE SAFETY INFORMATION This radio is restricted to occupational use, work related operations only where the radio operator must have the knowledge to control its RF exposure conditions. When the Push-to-Talk (PTT) button is pushed, the transceiver sends out radio frequency (RF) signals. In August 1996, the Federal Communications Commission adopted RF exposure guidelines with safety levels for hand-held wireless devices. The device is authorized to operate at a duty factor not to exceed 50%.
CONTENTS GENERAL INFORMATION................................................................................ 4 SUPPLIED ACCESSORIES ............................................................................................. 4 ACCESSORY ATTACHMENTS ......................................................................... 4 INSTALLING THE ANTENNA....................................................................................... 4 INSTALLING / REMOVING THE BATTERY PACK ..................................
GENERAL INFORMATION The SC-580 series and SC-280 series transceiver is a combination conventional and trunking radio. As the trunking radio, the radio is capable of operating on up to 32 trunking system, and it can operate on E.F.Johnson LTR ® trunking protocol. LTR® is a registered trademark of E. F. Johnson Company. As the conventional radio, the radio is capable of operating on up to 250 channels. Simplex (talk around) and semi-duplex operation are allowed on any system.
INSTALLING / REMOVING THE BATTERY PACK 1. Turn of the power off. 2. Remove the battery pack from the transceiver; Pull the battery lock button and slide down the battery pack. 3. To insert the battery pack, slide up the battery pack. INSTALLING THE BELT CLIP If necessary, attach the belt clip using the two supplied screws. INSTALLING THE JACK COVER If you are not using the optional microphone and speaker, attach the jack cover.
WARNING: The battery pack should be charged only with exclusive charger. The use of any other charger may cause injury and permanent damage to the battery. Do not charge the battery for longer than the specified time! Do not place the battery pack into a microwave or high pressure container! Keep ruptured and leaking battery packs away from fire! Follow charging instructions provided with the charger.
CONTROL AND CONNECTIONS POWER SWITCH / VOLUME CONTROL Turns the transceiver on and off, and adjusts the volume. SYSTEM/GROUP CONTROL In the conventional and LTR® trunking system, it selects either F (functional position) or one of 15 Systems/Groups. TX/BUSY LED INDICATOR Lights red during transmission, green during reception or when busy.
H (HOME) KEY In the conventional and LTR® trunking system, it returns the radio working system to the programmed HOME system and group. This key also activates the DTMF “A” tone during transmission. S (SCAN) KEY Pressing this key for longer than 2 seconds changes the radio operation between the conventional / LTR® trunking system.
PROGRAMMABLE KEY FUNCTIONS The following key functions can be programmed by your dealer. Each function can be programmed to any key. Refer to your dealer for programming and operating instructions.
BASIC OPERATION 1. Turn the power switch / volume control clockwise to switch the transceiver on. Turn the Power switch / volume control counterclockwise to switch the transceiver off. 2. Rotate the power switch / volume control to adjust the volume. Clockwise increase the volume. Counter clockwise decrease the volume. LTR OPERATION Push the key, or rotate System / Group control to select the desired system channel and talk group. Note: Systems, groups and their functions are programmed by your dealer.
EMERGENCY When *(Orange) key is pushed more than 1.5sec, the DTMF emergency signal is automatically transmitted. Note: An emergency functions are programmed by your dealer. To exit emergency mode, press and hold *(Orange) key again or turn off the power switch. MAN DOWN When the programmed key is pushed, the man down function can be used. The man down function transmits emergency signal after the man down is activated for a period exceeding the specified time.
