Sepura SC21 Series Service Guide

DO NOT REMOVE OR DAMAGE THE ANTI-
TAMPER LABEL COVERING THE SCREW
Antenna
The radio must be fitted with an antenna at all times during operational periods. Transmitting without
an antenna may damage the radio.
Only use Sepura approved antennas designed for use with this radio (see External components
on page25).
Maintenance checks
Power off the radio.
Do not touch the antenna when the radio is powered on and transmitting.
Perform the following checks:
The antenna should be inspected regularly for any damage. If the antenna shows any signs of
wear, cracks or other damage, it must be replaced immediately.
Ensure that the antenna is fitted correctly and there is a good seal between the antenna and
the antenna connector on the radio.
Ensure that the area at the base of the antenna is clean and free from dust and debris.
Battery
Warning! RISK TO PERSONAL SAFETY. TETRA radios have been
tested and certified using Sepura approved batteries. The use of non-
approved batteries may damage the product, will result in non-compliance
with regulatory requirements, compromise the product safety ratings, reduce
the length of operating time and will invalidate the product warranty.
Rechargeable batteries have a limited number of charge cycles and may eventually need to be
replaced. Sepura recommends replacing batteries every two years or after 500 charge cycles.
Always replace batteries with an approved Sepura battery of the correct type for the hand-portable
radio.
Level 1 Service Guide 21

Sepura SC21 Series Specifications

General

IP Rating	IP54
Operating Temperature	-20°C to +55°C
Channel Spacing	25 kHz
Ingress Protection	IP54
Channels	Up to 2000
Frequency Bands	380-430 MHz, 806-870 MHz
Battery Life	Up to 14 hours
RF Power Output	1W
TETRA Air Interface	ETSI EN 300 392-2