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Home > Products > Radio Modem > UHF Radio Modem > 400-440MHz UHF radio modem
400-440MHz UHF radio modem
  • 400-440MHz UHF radio modem

400-440MHz UHF radio modem

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

Basic Info

Model No.: GD420HH25

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

GD420HH25 is a half-duplex UHF Radio Modem that operates on 400 to 440 MHz frequency band. Channel spacing 12.5 and 25 kHz are available, with over-the-air data rates 9600 bps in 12.5 kHz channel spacing or 19200 bpsin 25 kHz channel spacing, respectively.The Radio modem is compatible with the most widely used serial interfaces RS-232, RS- 485 and RS-422.With output power of 25 watts,it meets both the technical and economical requirements set on wireless communications in a number of applications, including remote meter reading (gas, electricity, heat), Remote control of water distribution, remote control of irrigation systems and environmental monitoring.

400-440MHz Radio Modem


Specifications

1. General

(1) Operating frequency range: 400 to 440 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 ( 11Vdc 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

(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 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


Looking for ideal RF UHF Wireless Modem Manufacturer & supplier ? We have a wide selection at great prices to help you get creative. All the SCADA Remote Control Radio Modem are quality guaranteed. We are China Origin Factory of 400-440MHz Radio Modem. If you have any question, please feel free to contact us.

Product Categories : Radio Modem > UHF Radio Modem

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