[Interface de comunicación]：UART
[Poder de transmision]：30dBm
[Distancia de comunicación]：5.6km
[Método de modulación]：GMSK/4FSK
[peso]：4.8±0.1g
[Introducción]：RD400D es un módulo de transmisión de datos (radio) transceptor-transmisor de frecuencia fija integrado montado en una mesa, que funciona en la banda de frecuencia de 410 MHz ~ 470 MHz, centrándose en topografía y cartografía, agricultura de precisión, drones e Internet de las cosas. El entorno de aplicación tiene la características de peso ligero, tamaño pequeño, bajo consumo de energía y rendimiento de recepción superior. Admite una variedad de selección de engranajes de potencia, conmutación libre de velocidad en baudios del aire, selección rica de velocidad en baudios del puerto serie y fácil operación.
Soporte para TRIMTALK, TRIMMARK3, TRANSEOT (O PCC O PROTOCOLO TRANSPARENTE).
| Main parameters | performance | remark | |
| minimum | maximum | ||
| Supply voltage (V). | 3.3 | 3.6 | More than 3 6V permanently burns out the module |
| Operating temperature(℃) | -40 | +85 | Industrial grade |
| Storage temperature (℃). | -40 | +125 | - |
| Main parameters | performance | remark | ||||
| minimum | Typical value | maximum | ||||
| Normal voltage mode | - | 3.3 | 3.6 | >3.3V guarantees output power | ||
| Communication level (V). | - | 3.3 | - | There is a risk of burning out with 5VTTL | ||
| Operating frequency band (MHz). | 410 | 450 | 470 | - | ||
| Transmit power (dBm). | High power | - | 30 | - | ±0.5dBm@3.3V DC | |
| Low power | - | 27 | - | |||
| Receive sensitivity (dBm). | - | -115 | - | @BER 10*3, 9600bps | ||
| PO wer con sum ptio n | Transmit current (mA). | - | 1066 | - | @30dBm | |
| Receive current (mA). | 50 | |||||
| Transmitter performance specifications | ||
| Main parameters | description | remark |
| RF power stability | ±ldB | - |
| Adjacent channel power | >50dB | - |
| Second harmonic | <-25 dBm | - |
| Receiver performance specifications | ||
| Main parameters | description | remark |
| Common-channel rejection | >-12dB | - |
| Adjacent channel selectivity | >50dB@25KHz | - |
| Stray immunity | >50dB | - |
| Air rate | 4800bps> 9600bps、 19200bps | TRIN1TALK supports 4800bps：9600bps, TRIMMARK3 supports 19200bps: TRANSEOT supports 4800bps and 9600bps |
| Main parameters | description | remark | |
| Reference distance | 5.6Km | Clear and open environment, height 2.0 meters. @ 30dBm, airspeed 9600bps | |
| Modulation mode | GMSK4FSK | - | |
| transmission rate | TRIMATLK | 950 bytes, s | gSerial port baud rate 115200: air baud rate 9600 |
| TRIMMARK3 | 1300 bytes； (750ms) | @Serial port baud rate 115200: air baud rate 19200 | |
| TRANSEOT | 600 bytes, s | gSerial port baud rate 115200: air baud rate 9600 | |
| Communication interface | UART | - | |
| Frequency stability | ≤±1.0ppm | - | |
| Working mode | Half duplex | - | |
| Encapsulation method | SMD | - | |
| Form factor | 33*26.5*3.7mm | ±0.1mm | |
| Antenna interface | Stamp hole, IPEX | The equivalent impedance is about 50Q | |
| Number of pins | 80 | - | |
| Product weight | 4.8g | ±0.1g | |