450-470MHz UHF Radio Modem

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

Basic Info

Model No.: GD450VH-E25

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

GD450VH-E25 is an UHF radio modem operating in 450-470MHz frequency band with output power of 25 watts. The air data rate is 19200 bps in 25 kHz channel spacing and 9600 bps in 12.5 kHz. These UHF radio modems work in transparent transmission, and they can ensure compatibility to most user systems and protocols. These UHF radio modems are perfect for SCADA, remote control and telemetry for utility distributions (water, electricity, oil & gas).

 450-470MHz Radio Modem



1. General

   (1) Operating frequency range: 450 to 470 MHz

   (2) Channel spacing: 25 KHz or 12.5KHz

   (3) Number of channels: 60

   (4) Antenna impedance: 50 Ohm unbalanced

   (5) Operating temperature: -40 to +70

   (6) Frequency stability TCXO:  ±1.5ppm

   (7) Operation voltage range: 12V DC ( 11V DC to 14.5V DC)

   (8) Stand-by current: 85mA


2. Transmitter

   (1) RF output power: 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:6.0A@25W output power

   (9) Audio frequency distortion: 3% 1KHz for 3KHz deviation

   (10) Audio frequency range: 300Hz to 3400Hz ±2dB

   (11) Transmitter attack time: less than 7ms


2. Receiver

   (1) Type of receiver: Crystal controlled 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: 19200 or 9600bps programmable

   (3) Interface baud rate: 600 - 38400 bps programmable

   (4) Interface data bit: 8 / 7 bit

   (5) Interface parity bit: None / Even / Odd

   (6) Interface stop bit: 1 / 2 bit

Contact Info


Shenzhen PuFang Technology Co., Ltd.

Address: 916, Time building, Tian An Cyber Park, Futian, Shenzhen, China,Shenzhen,Guangdong

Contact Person: Antony Lee



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