Cellular Specialties, Inc. Model 140 Miniature In-Building Amplifier Operation and Users Manual 1 140 BDA Rev.
Table of Contents 1. Product Description Background Functional Description 2. General Specifications 3. Inspection and Installation Inspection of Contents Package Contents Installation Safety 2 140 BDA Rev.
1. Product Description Background The performance of a cell phone can be easily degraded when in enclosed structures where signals from a local cell site are not sufficient for reliable phone operation. The Model 140 Miniature In-Building Amplifier (MiniIBA) was developed by Cellular Specialties, Inc. (CSI) to enhance cellular performance within these enclosed structures. Specifically, the Mini-IBA is designed to cover small areas such as home offices, small workshops, etc.
output, which prevents spurious radio-frequency emissions from the amplifier. • Yellow “Isolation” LED indicates that the microcontroller in the unit has sensed instability due to insufficient isolation between the inside antenna and the outside antenna, and has reduced the gain of the amplifier. This is done to prevent oscillation, which can interfere with the handsets in the covered area and/or the wireless service provider’s base station.
2. General Specifications All specifications stated as typical unless otherwise noted. Cellular Specialties, Inc. reserves the right to change these specifications at any time without prior notice. Downlink Uplink 851-869 MHz (SMR) 869-894 MHz (Cellular) 806-824 MHz (SMR) 824-849 MHz (Cellular) 40 40 +22 dBm +22 dBm 6 dB 6 dB Propagation Delay <150 nsec. <150 nsec.
3. Inspection and Installation Inspection Inspect the equipment as soon as possible after purchase. If any part of the equipment has been damaged in transit, report the damage to the transportation company and also to the company where purchased.
cable is recommended. The actual coax used should be RG-8 type or better with a flame retardant rating as a minimum. If the coax is run through an area where heating and/or cooling air is channeled, a plenum rated coax must be used. When mounting the amplifier, take care to avoid areas of high heat or extreme cold. In general, do not place the unit on or near the top of high ceilings, by heaters or in cold storage areas.
Safety Precautions CAUTION ! For INDOOR use, an Omni-Directional Antenna with a maximum gain of 8 dBi is authorized for use with this unit. Inside antennas must be positioned to observe minimum separation of 20 cm. (~ 8 in.) from all users and bystanders. For the protection of personnel working in the vicinity of inside (downlink) antennas, the following guidelines for minimum distances between the human body and the antenna must be observed.
