Most VHF Bi-Directional Amplifiers are customized Radio Frequency designed to handle specific frequency request.

- Kingtone JIMTOM® VHF Bi-directional-Amplifier(BDA) is designed to solve problems of weak mobile signal, which is much cheaper than adding a new Base Station (BTS). Main operation of RF VHF Bi-directional-Amplifier(BDA) is to receive low-power signal from BTS via radio frequency transmission and then transmit the amplified signal to the areas where network coverage is inadequate. And the mobile signal is also amplified and transmitted to the BTS via the opposite direction.

Main Features

◇ Compatible with DMR,TETRA, TETRAPOL, P25 (Ph1 and Ph2)

◇ High linearity PA, High system gain,Intelligent ALC technology

◇ Full duplex and high isolation from uplink to downlink；

◇ Auto diagnostic,Automatic Operation convenient operation；

◇ User adjustable gain control, UL and DL independent;

◇ Automatic Gain Control;

◇ Local and remote monitoring (optional) with automatic fault alarm &remote control;

◇ IP67/NEMA4X Weatherproof design for all-weather installation;

Technical Specifications

Within 110-175MHzF3-F4 MHz

Within 110-175MHz  

Passband BW≤5MHz  

Guard band(F3-F2)≥5MHz Max. Input Level (Non-Destructive)-10dBm Max. Output Power (customizable)+0dBm+37dBm Max. Gain45dB45dB Input Sensitivity≥-110dBm≥-40dBm Passband ripple +/- 2.0 dB+/- 2.0 dB Gain Adjustment Range1~31dB @ step of 1dB Auto Level Control (ALC)>30dB Voltage Standing Wave Ratio (VSWR) 

≤ 1.5 Noise Figure@Max Gain≤ 5dB Frequency Error≤ +/-1.35kHz Frequency Deviation≤ +/-2.5kHz Adjacent Channel Power≤-60dBc Altemate Channel Power≤-60dBc  

Spurious EmissionWithin working band 

≤ -36dBm/30kHz Out of working band9kHz~1GHz: ≤ -36dBm/30kHz 1GHz: ≤ -30dBm/30kHz Group Delay≤ 1uS Maximum input power, no damage+5dBm I/O Impedance50Ω RF ConnectorN-Type (Female) / changeable / bottom of casing

Remote management and supervisingRemote access via Ethernet or wireless modem, option KT-RC2G RoHS complianceYES HousingIP67 / NEMA4X Temperature Range-13º to 131º F • -25º to +55º C Relative Humidity Range≤ 95% (non condensing) Power Supply (customizable)DC 24V/DC 48V / AC 220V, 50/60Hz/110VAC, 50/60 Hz Backup Power Supply (optional)4 hours CoolingNatural convection HousingIP67 / NEMA4X MountingWall or pole mounting MTBF50.000 hours Dimensions52*45*23cm Weight≤ 30kg