Condensed specifications
Frequency
144-146MHz Amateur Radio
150.825-152.450MHz (Australian LIPD Band)
151.820-154.600MHz US Multi-Use Radio Service (MURS) band
156.525MHz Global Maritime Distress and Safety System
173.200-173.325MHz (UK Telemetry, Telecommand, Alarm)
173.20375-173.39625MHz US FCC Part 90.238 Telemetry
Other custom variants from 130 - 180MHz on any 2MHz band
1.5kHz
25kHz (12.5kHz by special order)
16 channels controlled by parallel port
or 32 via serial UART interface
Frequency stability
Channel spacing
Number of channels
Operating temperature
Spurious radiations
-20 ºC to +70 ºC (Storage -30 ºC to +70 ºC)
Compliant with ETSI EN 300 220-3 and EN 301 489-3
Transmitter
Output power
+10dBm (10mW) 1dB nominal (factory adjustable 1 - 25mW) and
+20dBm (100mW) 1dB nominal (factory adjustable 25 - 100mW)
3kHz ( 1.5kHz @ 12.5kHz channel spacing)
-PM version: 4.2kHz (for 2.6V pk-pk 2100Hz)
30ms from TXE transition
Peak deviation
TX on switching time
Modulation type
FSK (F3D)
Phase modulation (-PM version)
TX modulation bandwidth
Adjacent channel TX power
TX spurious
DC – 5kHz (3V CMOS compatible)
<-37dBm
<-40dBm (no RF output in Standby)
Supply
Voltage
3.1V – 15V (10 – 25mW)
4.1V – 15V (25 – 100mW);
34mA nominal transmit (@10mW)
90mA nominal transmit (@100mW)
<8µA standby (TXE high or floating)
data (CMOS/TTL compatible)
33 x 23 x 9mm
10 (8) pin 0.1" pitch dual row (5+5) header
2pin 0.1” pitch
1.2mm
Current
Inputs
Size
Interface
User
RF
Recommended PCB hole size
Receiver
Sensitivity
S/N ratio
AF bandwidth (-3dB)
-118dBm for 12dB SINAD
35dB (min), 40dB (typ) on AF output
4kHz
image
Other spurious
Blocking
Adjacent channel
LO re-radiation
Supply
<-60db
<-70dbm
Better than 84dB
<-60dB
-70dBm
Voltage
Current
3.1V – 15V
20mA receive
<1µA standby (RXE low)
RSSI, audio, data (quasi DC data recovery circuit)
46 x 23 x 9 mm
Outputs
Size
Interface
User
RF
Recommended PCB hole size
10 pin 0.1" pitch dual row (5+5) header
2pin 0.1” pitch
1.2mm
Radiometrix Ltd
LMT1/LMR1 Data Sheet
page 7
RADIOMETRIX [ RADIOMETRIX LTD ]
