5kw Radio Modem

Basic Info

Application: Industrial, Civilian

Certification: ISO

Style: Sky Wave

Condition: Used

Standard: Standard

Screen: With Screen

Additional Info

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

 GDWP25 has a high-power transmitter with an output power of 25W. The transmission distance is about 20km long and can cover a connection distance of 80km. At the same time, it has wide 70MHz. tuning range (403-473MHz) is a hardware and optional channel spacing.  It travels in the 900MHz frequency band and maintains data throughput of up to 115.2kbps.

GDWP25 is a wireless modem capable of supporting multiple frequency bands, UHF and VHF, especially for outdoor use in different weather conditions.

Specifications

1. General

   (1) Operating frequency range: 403-473MHz

   (2) Channel spacing: 25 KHz

   (3) Number of channels: 16

   (4) ANTENNA IMPEDANCE: 50 Ohm unbalanced

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

   (6) FREQUENCY STABILITY TCXO:   ±1.5ppm

   (7)OPERATIONVOLTAGERANGE: 12V DC ( 11Vdc to 14.5V  DC)

   (8) STAND-BY CURRENT: 110mA

 

2. TRANSMITTER

   (1) RF OUTPUT POWER: 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: 6.0A @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 20 ms

 

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: 115.2kbps programmable

   (3) INTERFACE BAUD RATE: 0-19200bps programmable

   (4) INTERFACE DATA BIT: 8 / 7  bit

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

   (6) INTERFACE STOP BIT: 1 / 2  bit