# SATELLINE M3-TR9 Radio Module

A compact 1 W frequency-hopping transceiver module for license-free 902–928 MHz data links in North American OEM equipment.

- Product page: https://catalog.satelusa.com/products/satelline-m3-tr9/
- Category: Radio modems
- Status: current
- Part numbers: YM7900, YM7910, YM7915, YM7920
- Manufacturer: SATEL Oy
- Image: https://catalog.satelusa.com/images/products/satel-radio-module.webp

## Overview

SATELLINE M3-TR9 is a compact 902–928 MHz frequency-hopping transceiver module designed for integration into OEM equipment. Its low-voltage CMOS-UART interface, small RF-shielded PCB and wide functional temperature range suit battery-powered, mobile and space-constrained systems.

The module provides a 115.2 kbit/s radio link with programmable output up to 1 W. User-selectable hopping bands, patterns, channels and frequency zones allow the radio plan to be adapted to the installation. In the United States and Canada, the 902–928 MHz ISM band supports license-free operation subject to the integration and RF-exposure requirements in the guide.

Configuration and firmware management are supported through SATEL NETCO DEVICE, SATEL Configuration Manager and SL commands. The integration guide covers the 20-pin DTE interface, power sequencing, antenna integration, mechanical mounting and host-product labeling requirements.

## Highlights

- License-free 902–928 MHz frequency-hopping operation
- Up to 1 W transmitter power and 115,200 bps radio data rate
- Compact RF-shielded PCB for host-device integration
- Approved for use in the United States and Canada

## Available variants

- **YM7900:** General-region model
  - Region: General-region model
- **YM7910:** United States and Canada model
  - Region: United States and Canada
- **YM7915:** Australia model
  - Region: Australia
- **YM7920:** DTE connector and U.FL connector on the same side
  - Connector arrangement: DTE connector and U.FL connector on the same side

## Specifications

### Radio

- **Frequency range:** 902–928 MHz in the United States and Canada
- **Spreading method:** Frequency-hopping spread spectrum
- **Modulation:** 2-GFSK
- **Hopping bands:** 7, user selectable
- **Hopping patterns:** 15 per band; 105 total, user selectable
- **Hopping channels:** 50–112, user selectable
- **Frequency zones:** 16 zones with 7 channels per zone
- **Carrier power:** 10, 20, 50, 100, 200, 500 or 1,000 mW
- **Receiver sensitivity:** Typically −109 dBm at BER 10⁻⁴
- **Radio data rate:** 115.2 kbit/s

### Data interface and configuration

- **Electrical interface:** CMOS-UART with 1.8–3.3 V I/O
- **Serial data speed:** 9,600–115,200 bps
- **Interface connector:** 20-pin, 1.27 mm pitch socket
- **Configuration:** SATEL NETCO DEVICE, SATEL Configuration Manager or SL commands

### Mechanical and electrical

- **Operating voltage:** +3.5–5.5 VDC
- **Typical power consumption:** 0.3 W receiving; 3.2 W transmitting at 1 W RF output
- **Functional temperature range:** −40 to +70 °C
- **Storage temperature range:** −40 to +80 °C
- **Vibration tolerance:** Up to 25 g from 10 Hz to 2 kHz
- **Construction:** PCB with sheet-metal RF/EMI shielding
- **Dimensions:** 57 × 36 × 6.7 mm
- **Weight:** 20 g
- **Antenna connector:** 50 Ω Hirose U.FL-compatible connector

### North American approvals

- **FCC ID:** MRBSATEL-TA31
- **ISED certification:** 2422A-SATELTA31

## Compatibility

- FreeWave FGR-series networks

## Documents

- [Product brochure](https://catalog.satelusa.com/documents/satelline-m3-tr9/SATELLINE_M3_TR9_3_2023.pdf) (datasheet)
- [M3-TR9 and M3-R9 Integration Guide](https://catalog.satelusa.com/documents/satelline-m3-tr9/SATELLINE-M3-TR9_R9_IntegrationGuide_v2.4.pdf) (guide, version 2.4)

## Related products

- [SATEL-B2 Radio Motherboard](https://catalog.satelusa.com/products/satel-b2/)
- [SATEL Proof-TR9](https://catalog.satelusa.com/products/ym6411/)