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FRT Series
Outdoor Wireless MODEM
n
Die-cast Watertight
outdoors remote-mounted hardware.
n
Build in Lightning
Protector ( Surge Arrester ).
n
Designed
to fit the needs of outdoor environments.
n
Build in
MODEM(FM-960)、Tx(FT-230)、Rx(FR-230)、
Duplexer(FD-230)
Module.
APPLICATION：
n
Remote
Control of Electron Equipment.
n
Wireless
Data Deliver.
n
Wireless Telecontrol of :
1.Environmental
Monitoring.
2.Geology
Monitoring.
3.Meteorological
Phenomena Monitoring.
4.Hydrology
Monitoring.
MODEM
SPECIFICATION：
|
MODEM |
FM-960
|
Port
|
RS-232
|
|
RS-232
Data Rate
|
19200、9600、4800、2400(bps)
|
|
Accord
|
RTS/CTS/Without
|
|
Modulation
|
GMSK
|
|
Rf
Data Rate
|
1200、2400、4800、9600 (bps)
|
|
Work
|
ARQ
|
RF
SPECIFICATION：
|
General |
FRT-140
|
FRT-230
|
FRT-450
|
|
Frequency
Range
|
136 ~
174MHz
|
220 ~
255MHz
|
380 ~
490MHz
|
|
Channels
|
1
|
1
|
1
|
|
Max.
Bandwidth |
3MHz |
4MHz |
5MHz |
|
Power
Supply
|
DC 12V
|
|
Current
Drain Tx
|
＜800mA
|
|
Standby
Current Rx
|
＜ 17mA
|
|
Environmental
|
－30℃ ~ ＋60℃
|
|
Operating
Humidity
|
0﹪~ 80﹪
|
|
Dimension
|
245mm
×
200mm × 70mm
|
Weight
|
2.1Kg
|
|
Transmitter
|
FT-140
|
FT-230
|
FT-450
|
|
Power
Output
|
5W
|
5W
|
4W
|
|
Crystal
Multiplication
|
F/9
|
F/18
|
F/27
|
|
Deviation
|
± 5KHz Max
|
|
Frequency
Stability
|
± 5ppm（－30℃ ~
＋60℃）
|
|
Spurious
& Harmonics
|
Better
than 56dB
|
|
Power
-Up
|
10ms
|
|
Modulation
Response
|
＋3，1dB of 6dB / oct from 300Hz to 3kHz
|
|
Modulation
Distortion
|
＜
3﹪（±3kHz Deviation at 1kHz）
|
|
Output
Impedance
|
50Ω
|
|
Data
Drive
|
50mV p－p，600Ω Load，for ＋3kHz Ground reference
|
|
Receiver
|
FR-140
|
FR-230
|
FR-450
|
|
Intermediate
Freq. 1st
|
21.4MHz
|
21.4MHz
|
21.4MHz
|
Intermediate
Freq. 2nd
|
455kHz
|
455kHz
|
455kHz
|
|
Frequency
Stability
|
± 10ppm
|
± 5ppm
|
± 5ppm
|
|
Crystal
Multiplication
|
（F－2.14）÷9
|
（F－2.14）÷18
|
（F－2.14）÷27
|
|
Sensitivity
|
0.3μV
12dB Sinned / 0.5μV 20dB NSQ
|
|
Squelch
Sensitivity
|
0.25μV
~ 0.5μV （Pre - Adjustable）
|
|
Squelch
Time Open
|
＜
25mS
|
|
Squelch
Time Close
|
＜
13mS
|
|
Selectivity
|
Batter
than 70dB （30kHz Spacing）
|
|
Acceptance
Bandwidth
|
＞
±7 kHz
|
|
AF
Power Output
|
350mW （＜10﹪
Distortion at 1kHz）
|
|
AF
Response
|
＋1，－8dB of 6dB / Oct from 300Hz to 3kHz
|
|
Discriminator
Output
|
50mVp-p
to 600Ω Load
|
|
Duplexer
|
FD-150
|
FD-230
|
FD-450
|
|
Frequency
Range
|
142~175MHz
|
220~240MHz
|
420~470MHz
|
|
Frequency
Separation
|
4.5MHz |
|
Max
Input Power
|
50W |
Tx Insertion Loss
|
1.0dB |
|
Rx
Insertion Loss
|
1.0dB
|
|
Tx
Attenuation at Rx
|
80dB |
|
Rx
Attenuation at Tx
|
80dB
|
Max
VSWR
|
1.4:1 |
|
Frequency
Stability
|
±
2.5ppm
|
|
Environmental
|
－30℃ ~ ＋60℃
|
|
RF
I/O Impedance
|
50Ω |
ACCESSORY:
1、YAGI
Antenna
10dB
×1
2、AC110
/ DC12V Power Supply ×1
3、RS-232
Configuration Cable
10m
×1
4、RF
Cable 3m ×1
5、Mast
Mounting Bracket With U-bolts ×1
BACK
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