223-235MHz VHF Radio Modem

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

Basic Info


Model No.: GDMV23

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

GDMV23 radio modem provides a VHF radio modem used in transparent data link on the 220-240 MHz frequency band. It can cover up to 50 kilometers range in line-of-sight environment and transfers data at 19200bps over-the-air data rate.

GDMV23 is designed for tight integration into the user`s terminal equipment and is particularly well suited for the transfer of data acquisition and control messages in medium and long range applications.

Establishing networks with these radio modems are flexible, easy to expand and can cover a wide variety of solutions from point-to-point application to point-to-multipoint large networks. 

223-235MHz Radio Modem


Specifications

1. General

   (1) Operating frequency range: 223-235MHz,

 (2) Channel spacing: 25 KHz

   (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: 110mA

 

2. TRANSMITTER

   (1) RF OUTPUT POWER: 1.5 W 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 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: 19200bps programmable

   (3) INTERFACE BAUD RATE: 1200bps to 19200bps programmable

   (4) INTERFACE DATA BIT: 8 /7bit

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

   (6) INTERFACE STOP BIT: 1bit


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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