Payment Type: | T/T |
---|---|
Incoterm: | FOB |
Min. Order: | 2 Set/Sets |
Delivery Time: | 9 Days |
Basic Info
Model No.: GDW448
Application: Industrial, Civilian
Certification: ISO
Style: Sky Wave
Condition: Used
Standard: Standard
Screen: With Screen
Additional Info
Packaging: Environmentally friendly paper packaging
Productivity: 10000 sets / year
Brand: PuFangTech
Transportation: Ocean,Land,Air
Place of Origin: China
Supply Ability: 20000 sets / year
Certificate: SO9001 certification
Port: Shenzhen
Product Description
GDW448 is an half-duplex wireless modem that operates on VHF or UHF bands. Channel spacing 12.5 and 25 kHz are available, with over-the-air data rates 4800bps. It provides high available RS485 connectivity with reliable radio technology and switchover functionality. Support for serial components is ensured by serial modes of operation as well as protocol conversions.
GDW448 can meet the requirements of mission critical connectivity: high availability, long-range connectivity, easy and error-free deployment. Configuration is easy with downloadable configuration software.
Specifications
1. General
(1) OPERATINGFREQUENCYRANGE: 150-174MHz
(2)Channel spacing:12.5 and 25 kHz
(3) Number of channels: 60
(4) ANTENNA IMPEDANCE: 50 Ohm unbalanced
(5) OPERATING TEMPERATURE: -40 to +70℃
(6) FREQUENCY STABILITY TCXO: ±2.0ppm
(7) OPERATION VOLTAGE RANGE: 12V (11V to 14V) DC
(7) STAND-BY
CURRENT: 90mA
2. TRANSMITTER
(1) RF OUTPUT POWER: 5W-25W programmable
(2)RECEIVER ATTACK TIME: <10ms
(3) AUDIO FREQUENCY RANGE: 300Hz to 3400Hz ±2dB
(4) SPURIOUS EMISSIONS: less than 0.25uW (30MHz to 1GHz)
(5) OUTPUT 2ND HARMONIC: less than –65dB
(6) MAXIMUM FREQUENCY DEVIATION: ±5KHz
(7) REFERENCE OSCILLATOR: TCXO
(8) RF IMPEDANCE: 50 Ohm unbalanced
(9) FM HUM AND NOISE RATIO: greater than –50dB (under normal condition)
2. RECEIVER
(1) TYPE OF RECEIVER:Crystalcontrolled double, super heterodyne
(2) INTERMEDIATE frequency: 45MHz (1st IF), 455KHz (2nd IF)
(3) SENSITIVITY(12 dB SINAD) : less than 0.2uV
(4) SQUELCH
SENSITIVITY: 0.1uV to 1uV programmable
(5) ADJACENT CHANNEL SELECTIVITY: greater than –65dB
(6) SPURIOUS AND IMAGE REJECTION: greater than –65Db
(7) OUTPUT AUDIO
DISTORTION: 3% at 1 KHz for ±5KHz deviation
(8) FM HUM AND NOISE RATIO: greater than 40dB
(9) SQUELCH SENSITIVITY: 0.3uV
3. Data and Interface
(1)
MODULATION: MSK
(2) AIR RATE: 4800 bps programmable
(3) INTERFACE DATA BIT: 8 bit
(4) INTERFACE PARITY BIT: None / Even /
Odd
(5) INTERFACE STOP BIT: 1 / 2 bit programmable
CONTACT US
Shenzhen PuFang Technology Co., Ltd.
Address: 916, Time building, Tian An Cyber Park, Futian, Shenzhen, China,Shenzhen,Guangdong
Contact Person: Antony Lee
Phone:86-755-83476931
Fax:86-755-83475106