© Interleader Limited 2017
19 of 30
Printed: 06/09/2017
18 UHF Radio Modem Specification
The same Telit UHF Radio Modem is used in MIL-Star, HEMS-Star, RLC, MLC, PLC and KFC and the
FEC Systems Management PC Dongle. The Modem has the following specification.
Parameter
Value
UK/EU/ROW 868 MHz
USA 915MHz
Manufacturer:
Telit
Telit
Modem type:
LE70 - 868
LE70 - 915
Nominal frequency band:
868MHz
915MHz
Frequency (sub)band:
869.525MHz (869.4 - 869.65MHz)
902
– 928MHz (915.375 1
st
Channel)
Frequency hops/dwell time:
N/A
50/350mS
Freq. tolerance @ 20C
+/-2.5kHz
+/-2.5kHz
Rx filterb
81kHz
81kHz
Deviation:
+/-20kHz
+/-20kHz
Power output set
100mW (20dBm)
100mW (20dBm)
Receiver sensitivity:
Max
–110dBm at 38.4kbps
Max
–110.5dBm at 38.4kbps
Controller range:
To 200m subject to antenna & terrain
To 200m subject to antenna & terrain
Addressing - module level:
Transparent (secure addressing later)
Transparent (secure addressing later)
Addressing schema:
One to Many
One to Many
Addressing
– device level:
Handled in software
Handled in software
Encryption:
None (AES 128bit later)
None (AES 128bit later)
RF Baud rate:
38.4kbps
38.4kbps
Modem data rate:
19.2kbps
19.2kbps
Modulation:
2GFSK
2GFSK
Operating temperature:
-40C to +85C
-40C to +85C
Compliance:
CE (0682)
Compliance for FCC is to 47 CFR part
15.249. FCC ID: R17LE70FH
RF Channel Selection
The EU standard sets maximum power transmission limits dependent on frequency, bandwidth
and application. A rough guidance applicable to the ZULU channel numbers is given below
Channel Number
Frequency Centre (MHz)
EU Power Allowance
mW/dBm
Notes
0
868.400
25/14
Applicable standard -
EN300-220
1
868.900
25/14
2
869.450
100/20
3
869.600
100/20
4
869.800
25/14
All specifications are manufacturer
’s data
