The Jetfon ATM-GS-M is a professional-grade, monoband GSM 900 MHz mobile phone signal repeater kit designed to eliminate cellular dead zones and significantly improve voice call quality and 2G/3G data transmission in areas with weak or difficult reception. Ideally suited for rural properties, underground basements, thick-walled stone houses, mountain cabins, and deep industrial warehouses, this high-performance cellular booster pulls in faint outdoor signals, amplifies them, and redistributes them cleanly throughout your indoor space.
Operating across the standard GSM frequency bands—uplink from 880 to 915 MHz and downlink from 925 to 960 MHz—the ATM-GS-M delivers a powerful maximum system gain of 60/65 dBm. To ensure harmonious integration with national cellular networks, the repeater is engineered with smart auto shut-off safety technology. This system automatically monitors incoming RF levels and disables the booster if it detects self-oscillation or feedback loops, preventing harmful signal saturation and interference with nearby telecommunication carrier towers. Please note that the installation of this signal amplification equipment must be authorized by your network operator prior to deployment.
The Jetfon ATM-GS-M comes as a complete, plug-and-play installation package. The kit includes a high-sensitivity directional external antenna to mount on your roof or mast, a compact indoor whip antenna to distribute the boosted signal inside your building, a robust 15-meter low-loss coaxial cable with pre-terminated N-type connectors, and an efficient 5VDC power supply. Housed in an IP40-rated aluminum casing, this compact, wall-mountable booster features low-loss N-female RF connectors and is built to operate reliably in temperature extremes ranging from -10°C to +55°C.
Key Features
- GSM 900 MHz Monoband Booster: Designed to capture and amplify voice signals and basic data on standard 900 MHz carrier bands.
- Complete Installation Kit: Includes high-gain indoor and outdoor antennas along with a 15-meter low-loss connection cable.
- 60/65 dBm System Gain: Provides excellent signal amplification to easily bypass thick concrete or stone barriers.
- Smart Auto Shut-Off Protection: Prevents network saturation and feedback loops to protect nearby carrier infrastructure.
- Heavy-Duty N-Female Connectors: Standard low-loss RF connection ports maintain maximum signal integrity.
- Wall-Mountable Chassis: Lightweight, compact metal casing (IP40 rated) optimized for clean wall installations.
Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | Jetfon |
| Model Designation | ATM-GS-M |
| Product Type | GSM 900 MHz Cellular Signal Repeater Kit |
| Frequency Range (Uplink) | 880 – 915 MHz |
| Frequency Range (Downlink) | 925 – 960 MHz |
| Maximum Gain | 60 / 65 dBm ± 3dBm |
| RF Connectors | N-Type Female (Input & Output) |
| Power Supply | 5V DC, 2A (Mains AC 220V power adapter included) |
| Power Consumption | Less than 10 Watts |
| Ingress Protection Rating | IP40 (Indoor Use) |
| Environmental Conditions | Operating Temp: -10 °C to +55 °C | Humidity: < 90% (non-condensing) |
| Device Dimensions (WxHxD) | 150 x 121 x 24 mm |
| Net Weight | Less than 0.8 kg (main unit only) |
Package Content
- 1x Jetfon ATM-GS-M GSM 900 MHz Signal Repeater
- 1x High-Gain Outdoor Directional Antenna
- 1x Indoor Distribution Antenna
- 1x 15-Meter Low-Loss External Antenna Cable (with pre-terminated N-connectors)
- 1x 220V AC to 5VDC Power Supply Adapter
- 1x Wall Mounting Hardware Pack
- 1x User Reference Manual
