JDIR-SMR Series (+20dBm)

Public Safety Industrial Repeater

Product Overview

The JDIR- SMR Series Cellular Repeater is a meduim-powered, gain adjustable repeater that is perfect for use in a DAS application needing to provide enhanced coverage for Public Safety channels to an office building, department store, warehouse, underground parking lot, or small hotel. Our repeaters are built with carrier level optimization in mind and thus use very high quality internal components to achieve this. These include low noise amplifiers with high linearity, properly specified  and set output power limits and well designed alarm/protection circuitry.

A main feature standard on all our repeaters are individually assigned Uplink and Downlink attenuation adjustment DIP switches.   

A certified test report is included with each repeater that leaves our factory, so you are assured of strict quality controls.

  • Industry Leading Quad Band Repeater
  • 70dB Gain / 20dBm Output Power
  • 36 Months Warranty
  • 30 Day Money Back Guarantee
  • MUTE - Auto Shut Down if oscillation is detected
  • MGC: Manual Gain Control (Uplink & Downlink)
  • Automatic Limit Control Feature
  • Transparent when optimized
  • Coverage Area - (8,000 - 20,000 sq ft)
  • Supports 90-240 Volts
  • Alarm LED's for Error Detection
  • Automatic Gain Control Feature
  • Carrier Grade Performance & Quality
  • Phone Tech Support


Public Safety - 800 MHz

To maintain safe and specific output signal levels, this advanced repeater has built-in AGC (Automatic Gain Control) and ALC (Automatic Limit Control) circuits which can automatically control the gain of the repeater within a 15dB range depending on the RF environmental conditions. In addition, it also has built-in attenuation dip switches that allow you to manually attenuate (fine tune) the repeater's uplink and downlink channels in 1db increments up to 31dB, using color changing LED's as a status indicator. These Alarm LED's are used as a guide to prevent your installation from re-producing errors due to excessive input signal strength if a pre-amp is used, or from signal oscillation due to the indoor antenna and outdoor antenna being too close to each other, which can have adverse effects on a base station and greatly impede system performance. 

A Network Safe / MUTE™ feature comes standard with this repeater to protect the cellular network. In short, the repeater will stop transmitting if any errors or signal oscillation is detected within 2-4 sec of detection. It will cycle for 30 sec then attempt to transmit again. If no adjustment in gain has been made to correct the error within the 30 sec MUTE cycle, the system will again shut down after 5 sec. It will run this sequence for a total of 3 times and then shut down completely. Power cycling the unit will reset this sequence.

Due to the number of active amplifiers inside this repeater, a high-speed 3" brush-less fan is built into it in order to maintain cooler operating temps. This also greatly extends the lifespan of the repeater. 

This repeater is designed to be transparent to the network and will therefore support the same number of calls the serving sector of the BTS the donor antenna is aimed at. 

Frequency Chart

Model Uplink Downlink
JDIR-SMR-20 SMR 806 ~ 824 MHz 851 ~ 869 MHz
 Filter Bandwidth 18 MHz
 Max total output power   ≥15dBm ≥20dBm
 Max. Gain ≥65dB ≥70dB
 Gain Flatness 2.9 MHz
 AGC Range ≧15dB - Auto shut off after 15dB (MUTE)
 Maximum Input Power   0dBm
 Gain Control Range (MGC) ≥31dB in step of 1dB by Dip Switch
 V.S.W.R ≤2
Intermodulation 9KHz~1GHz≤-41.3dBm 9KHz~1GHz≤-40.5dBm
1GHz~12.75GHz≤-55dBm 1GHz~12.75GHz≤-55dBm
Spurious Emission 9KHz~1GHz≤-55dBm
Group Delay ≤ 1.5μs
 Impedance   50Ω

Mechanical Chart

Power Supply Input 90- 264 VAC,50 Hz, transformer: 12V / 3A
Operating Temperature -25°C~+55°C (-13F ~ 131F)
 RF Connector N Female
Weather Proof IP40
 Dimension 250 x 155 x 53 mm (9.84" x 6.10" x 2.08")
Weight ≤2.5Kg (5.5Lbs)
LED Alarm Standard
Power LED Power Indicator
ALC LED Amber @ ALC 1~5dB, Red @ ALC 15-20dB
LED off after 5 seconds red color
30 Day Money Back

36 Month Warranty

This is NOT a CONSUMER device
It is designed for installation by FCC LICENSEES and QUALIFIED INSTALLERS. You MUST have an FCC LICENSE or express consent of an FCC Licensee to operate this device. Unauthorized use may result in significant forfeiture penalties, including penalties in excess of $100,000 for each continuing violation.

Upload Background Image
Drop File

Let's Get You Taken Care of!


Upload Background Image
Drop File