Microhard Radio Specification

Specification

P900
P840
P400-C1S
Frequency Range
902 to 928 MHz
840 to 845 MHz
410 to 480 MHz
Transmit Power (Software Adjustable)
100mW to 1W (20-30dBm)
100mW to 1W (20-30dBm)
100mW to 1W (20-30dBm)
Link Rate
Up to 276 kbps
Up to 345 kbps
Up to 345 kbps
Serial Baud Rate
Up to 230.4kbps asynchronous
300 bps to 230 kbps
300 bps to 230 kbps
Spreading Method
Frequency Hopping Spread Spectrum (FHSS)
Frequency Hopping/Fixed Frequency,GMSK, 2GFSK, 4GFSK, QPSK
Frequency Hopping,GMSK, 2GFSK, 4GFSK, QPSK
Operating Modes
Mesh, Point-to-Point, Point-to-Multipoint, Store and Forward,Auto Routing, Self Healing, Packet Routing Modes
Point-to-Point, Point-to-Multipoint,store & Forward Repeater, Peer-to-Peer
Point-to-Point, Point-to-Multipoint,store & Forward Repeater, Peer-to-Peer
Input Voltage
DC7~35V(4-position JST-GH)
C7~35V(4-position JST-GH)
C7~35V(4-position JST-GH)
Power Consumption
Sleep < 1mAdle 3.5mARx: 45mA to 98mATx : 1000mA to 1400mA
Sleep < 1mAdle 3.5mARx: 45mA to 98mATx : 1000mA to 1400mA
Sleep < 1mAIdle 20mARx: 45mA to 98mATx Peak: 2A
Error Detection
32 bits of CRC, ARQ
32 bits of CRC, ARQ
32 bits of CRC, ARQ
Weight
44g (without antenna) 71g (with antenna)
44g (without antenna) 71g (with antenna)
44g (without antenna) 67g (with antenna)

P400 Frequency 410 to 480 MHz (Frequency Hopping)

Rate (kbps)
Power (W)
Sensitivity (dBm)
Bandwidth (kHz)
Regulatory
56.0
1
-113
60.0
None*
115.2
1
-109
150.0
None*
172.8
1
-108
180.0
None*
230.4
1
-106
230.0
None*
276.4
1
-105
230.0
None*
345.0
1
-103
400.0
None*

P840 Sensitivity (Frequency Hopping)

Rate (kbps)
Power (W)
Sensitivity (dBm)
Bandwidth (kHz)
19.2
1
-116
25
56
1
-113
60
115.2
1
-109
150
172.8
1
-108
180
230.4
1
-106
230
276.4
1
-105
280
345
1
-103
400

P900 Sensitivity (@10-4)

Rate (kbps)
Sensitivity (dBm)
57.6
-114
115.2
-112
172.8
-109
230.4
-107