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.
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.
| 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 1GHz~12.75GHz≤-55dBm |
||
| Group Delay | ≤ 1.5μs | ||
| Impedance | 50Ω | ||
| 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 |
The level of Andy and Angel were amazing! They did our installation, and it was immaculate. They were professional, knowledgeable, and very meticulous. Best vendor I’ve ever worked with bar none! Professional customer service and technical knowledge was unmatched. JDTECK is always welcomed here at the Embraer Engineering & Technology Center USA. We hope to continue this partnership in the near future
From the beginning of the project JDTECK consistently impressed us with their knowledge and understanding of the technologies they produce and deploy. Their installations were consistently excellent and professional!
The level of professional customer service and technical knowledge was unmatched. JDTECK is always welcomed here at the Embraer Engineering & Technology Center USA. We hope to continue this partnership in the near fuI would like to take this opportunity to acknowledge JDTECK for exceeding our expectations in the design and installation of a DAS (Distributed Antenna System) for the MCU (Marine Corps University) Bldg. M285 located at Camp Johnson North Carolina
The level of professional customer service and technical knowledge was unmatched. Polk County Florida Roads and Drainage Division Complex is located in a very remote area with limited access to cell service in various areas. After installation of 5G cell service boosters, employees now enjoy an outstanding connection with their cell phones that was not possible before. Sales, design and installation were outstanding!TECK is always welcomed here at the Embraer Engineering & Technology Center USA. We hope to continue this partnership in the near future
In 2012 we found JDTECK and gave them a shot. Since then, we have never turned back. The equipment is quality, and meets all expectations, but most importantly the customer service, attention to detail and passion that goes into every single job, purchase etc is handled better than I could ever expect. I would highly recommend giving them a shot, and exploring their products, they will not disappoint
JDTECK did an amazing job with our 100,000 sq. ft. corporate HQ building. Large areas of the building experienced medium-to-poor reception, with frequent dropped calls and cell phone batteries constantly draining. When JDTECK finished, we showed full bars for all areas of the building. We actually get better signal strength inside the office than we do in the parking lot! Highly recommended!
The level of professional customer service and technical knowledge was unmatched. JDTECK is always welcomed here at the Embraer Engineering & Technology Center USA. We hope to continue this partnership in the near future
Your techs have been amazing! We wish all projects here were as seamless as this one. We tested the entire building, and it works well…
