The RigExpert 770 MPA-LD compact, bi-directional RF signal amplifier

Tiny and powerful amplifier - it's real

740–810 MHz Operation

Automatic Mode Switching: VOX with adjustable threshold

Tiny Size

Low Voltage Operation, 5 V Power Supply

20 dB TX RF gain

15 dB RX RF gain

ESD Protection

The RigExpert 770 MPA-LD is a compact, bi-directional RF signal amplifier designed for integration into 5V-powered systems. It operates in the 740–810 MHz frequency range and features automatic VOX-based switching between transmit and receive modes with adjustable sensitivity. This makes it ideal for UAVs, SDR, IoT applications, and both professional and amateur radio systems.

Applications

UAV signal transmission
Software-defined radio (SDR)
IoT devices
Amateur and professional radio communication
Laboratory and testing equipment

Key Features

Frequency Range: 740–810 MHz
Transmit Gain: 20 dB
Receive Gain: 15 dB
Output Power (CW): 2.82 W @ 750 MHz
Output Power (Pulse): 3.53 W @ 750 MHz
Input Power Range: 3–20 dBm
Automatic Switching: VOX (adjustable sensitivity)
Power Supply: 5 V (4.75–5.25 V)
Power Consumption: 10 W (TX), 0.4 W (RX)
Protection: ESD/EMI shield
Cooling: Passive
Connectors: MMCX
Dimensions: 38 × 56 × 13.2 mm
Weight: 46 g

Absolute Maximum Ratings

Maximum Input Power: 20 dBm (modifiable by request)
Maximum Supply Voltage: 5.25 V

Laboratory Test Conditions

Supply Voltage: 5.00 V
Ambient Temperature: +22°C