Digital Communication Module MT-878 Details
| Code： | MT-B445 |
| Product： | Digital Communication |
| Size： | 39*31*15mm |
| Brand： | Moneypro |
| Model： | MT-B445 |
Key Features
-
Advanced SDR Technology:Â Ensures robust communication and high-speed data transfer with low power consumption.
-
Long Range: Supports communication distances of up to 12 km in open, unobstructed environments (air-to-ground).
-
Dual-Role Functionality:Â A single unit can be used as either an air (drone) end or a ground end, simplifying system design and spares.
-
Easy Pairing:Â Simple button-press pairing mechanism for quick and easy setup between two units.
-
Compact & Lightweight:Â Small form factor (39x31x15mm) and low weight (21g), making it ideal for airborne and mobile applications.
-
Wide Voltage Range:Â Operates from 3.7V to 5.5V, compatible with common LiPo batteries and standard 5V systems.
Technical Specifications
| Parameter | Specification |
|---|---|
| Frequency Range | 902 – 928 MHz |
| Transmit Power | 20 dBm (100mW) |
| Max Communication Distance | Up to 12 km (Open area, 120m AGL) |
| Air Data Rate | Low, Medium, High (Three selectable speeds) |
| UART Baud Rate | Adjustable (9600, 19200, 38400, 57600, 115200, 230400). Default: 115200 |
| Operating Voltage | 3.7 – 5.5 V DC |
| Operating Current | 85 mA @ 5V |
| Operating Temperature | -20°C to +50°C |
| Dimensions | 39 x 31 x 15 mm |
| Weight | 21 ± 2g (antenna excluded) |
| Case Material | Aluminum Alloy (CNC Machined) |
| Interface | TYPE-C (for power & configuration), GH1.25-4P (for flight controller) |
| Antenna Connector | SMA (Female, inner hole outer screw) for 915MHz rubber duck antenna |
Compatible Flight Controllers
The MT-B445 is compatible with major flight control systems including:
-
X5 FMU
-
APM
-
PX4
-
Warol FCS-F8
Physical Interface & Indicators
1. Buttons & Connectors:
-
Mode Switch: Toggles between M (Master) and S (Slave) modes. Repeater functionality can be configured via software.
-
Frequency Button:Â Used for pairing. Hold down simultaneously on two units (one in M mode, one in S mode) until the green LED flashes rapidly to indicate successful pairing.
-
TYPE-C Port:Â For connecting to a PC for configuration and power.
-
GH1.25-4P Port:Â For connecting to the flight controller’s data port.
-
SMA Antenna Port:Â For installing the 915MHz antenna.
2. Status Indicator LED:
| LED State | Meaning |
|---|---|
| Red Light On | Powered on, but not in communication. |
| Green Light On | Communicating normally with a paired unit. |
| Green Light Flashing | In pairing mode or successfully paired. |
Package Contents
-
Singular Package:
-
MT-B445 Radio Modem x 1
-
915 MHz Rubber Duck Antenna x 1
-
-
Standard Package (Typical Pair):
-
MT-B445 Radio Modem x 2
-
915 MHz Rubber Duck Antenna x 2
-
USB to TYPE-C Cable x 1
-
DATALINK Data Transmission Cable x 3
-
