4800bps RS485 Radio Modem

Payment Type: T/T
Incoterm: FOB
Min. Order: 2 Set/Sets
Delivery Time: 9 Days

Basic Info


Model No.: GDM448

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

The GDM448 is a industrial serial RS485 modem radio with over-the-air speed of 4800bps designed for integration into the user`s terminal equipment. The light-industrial grade serial RS485 RF radio modem will allow you to send and receive wireless serial data between two serial devices.

It operates in half-duplex mode and can be used in existing point to point as well as point to multipoint SCADA systems including many applications such as oil and gas wells, compressor stations, pipelines, fluid storage tanks and utility meters.

Industrial Radio Modem



Specifications

1. General

   (1) Operating frequency range: 220MHz-420MHz

(2) Channel spacing: 25KHz.

   (3) Number of channels: 60

   (4) ANTENNA IMPEDANCE: 50 Ohm unbalanced

   (5) OPERATING TEMPERATURE: -40 to +70℃

   (6) FREQUENCY STABILITY TCXO:   ±2.0ppm

   (7)OPERATIONVOLTAGERANGE: DC 11V to 14V ( Typical 12V )

   (8) STAND-BY CURRENT: 110mA

 

2. TRANSMITTER

   (1) RF OUTPUT POWER: 1.5W to 25W programmable

   (2) OUTPUT 2ND HARMONIC: less than –65dB

   (3) SPURIOUS EMISSIONS:  less than 0.25uW (30MHz to 1GHz)

   (4) MAXIMUM FREQUENCY DEVIATION: ±5KHz

   (5) REFERENCE OSCILLATOR: TCXO

   (6) RF IMPEDANCE: 50 Ohm unbalanced

   (7) CURRENT DRAIN: 5.0A @25W output power

   (8) FM HUM AND NOISE RATIO: greater than –50dB

   (9) AUDIO FREQUENCY DISTORTION: 3% 1KHz for 3KHz deviation

   (10) AUDIO FREQUENCY RANGE: 300Hz to 3400Hz ±2dB

   (11) TRANSMITTER ATTACK TIME: less than 10ms

 

2. RECEIVER

   (1) TYPE OF RECEIVER:Crystalcontrolled double, super heterodyne

   (2) INTERMEDIATE frequency: 45MHz(1st IF), 455KHz(2nd IF)

   (3) SENSITIVITY: Better than 0.2uV @12dB SINAD

   (4) SQUELCH SENSITIVITY: 0.1uV to 1uV programmable

   (5) ADJACENT CHANNEL SELECTIVITY: greater than –70dB

   (6) SPURIOUS AND IMAGE REJECTION: greater than –65dB

   (7) OUTPUT AUDIO DISTORTION: 3% at 1KHz for ±5KHz deviation

   (8) FM HUM AND NOISE RATIO:  greater than 40dB

 

3. Data and Interface

   (1) MODULATION: GMSK

   (2) AIR RATE: 8000bps programmable

   (3)INTERFACE BAUD RATE: 1200bps /2400bps/8000bps/programmable

   (4) INTERFACE DATA BIT: 8 /7bit

   (5) INTERFACE PARITY BIT: None / Even / Odd

   (6) INTERFACE STOP BIT: 1/2bit

 


Contact Info

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

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