Product Overview
The Kaelus MI-165 is designed for deployment in collocated 800 and 900 MHz systems, enhancing cell uplink coverage through improved system noise figure. It features improved base station sensitivity, four antenna ports, excellent noise figure performance, and full AISG operation with RET antenna support. The product is small and lightweight to minimize visual impact.

Technical Specifications
Downlink:
- Passband: 791 - 821 MHz (800), 925 - 960 MHz (900)
- Insertion Loss: 0.4 dB typical
- Return Loss: 18 dB minimum
- Maximum Input Power: 200W (average)
- Intermodulation Products: -159 dBc in RX band at ANT

Uplink:
- Passband: 832 - 862 MHz (800), 880 - 915 MHz (900)
- Gain: 12 dB nominal
- Return Loss: 16 dB minimum
- Bypass Return Loss: 12 dB minimum
- Bypass Loss: 1.7 dB maximum
- Noise Figure: 1.1 dB typical
- Output IP3: 25 dBm typical

Electrical Specifications
- Impedance: 50 Ohms
- Power Supply: +9 to +15V DC, 165mA @ 12V (normal mode), 320mA max (alarm mode)

AISG Mode of Operation
The TMA unit switches to AISG mode when valid frames are detected. It supports AISG versions 1.1 or 2.0 with a power consumption of less than 4W.

Environmental Specifications
- Temperature Range: -40ºC to +65ºC
- Ingress Protection: IP67
- Lightning Protection: IEC61312-1
- MTBF: >1,000,000 hours
- Compliance: EMC (EN 301 489-8), Safety (EN 62368-1), Operation (ETSI EN 300 019-1-4 class 4.1E), Storage (ETS 300 019-1-1 class 1.2)

Mechanical Specifications
- Dimensions: 249 x 152 x 234 mm
- Weight: 9.5 kg
- Finish: Powder coated, NCS 1502-R
- Mounting: Pole/wall bracket

Ordering Information
Various configurations are available with different connector types and AISG modes. The part numbers include MI-16501, MI-16502, MI-16506, MI-16531, MI-16532, and MI-16536, each offering specific features and configurations.

Company Information
Microdata Telecom rebranded to Kaelus in January 2021 to unify operations under one global brand, strengthening their position in the telecom market.