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Home > Products > Radio Modem > UHF Radio Modem > 400-430MHz UHF radio modem
400-430MHz UHF radio modem
  • 400-430MHz UHF radio modem

400-430MHz UHF radio modem

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

Basic Info

Model No.:  GDMD4F

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

GDMD4F is a Radio modem with air rate of 19200bps 4-FSK multi-modem is a state-of-the-art design giving the customer operations on UHF (400-430MHz) bands, while supporting DSP modems and popular new modes of operation. With a GPS connected to the GD400M, you can automatically announce your position to others UHF.

Grand’s new 400-430MHz UHF Radio Modem transceiver increases data throughput in narrow-band wireless systems. Included in each unit, are advanced networking, error correction, and diagnostics. With the same carrier power and antenna gain, the connection ranges are 30 to 50 per cent larger than those reached with an equivalent UHF Radio Modem.

25 KHz -12.5KHz radio modem


Specifications

1. General

(1) Operating frequency range: 400 to 430 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)OPERATIONVOLTAGERANGE: 12V DC ( 11Vdc to 14.5V DC)

(8) STAND-BY CURRENT: 85mA

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 7ms

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: 4-FSK

(2) AIR RATE: 19200bps 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 400-430MHz Radio Station Manufacturer & supplier ? We have a wide selection at great prices to help you get creative. All the UHF Interface Wireless Modem are quality guaranteed. We are China Origin Factory of 25 KHz -12.5KHz Radio Modem. If you have any question, please feel free to contact us.

Product Categories : Radio Modem > UHF Radio Modem

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