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New RMILEC NB20 V2 T4047NB20 20Ch 400-470MHz UHF Long Range RC System LRS System Receiver with V2 Display

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    Receiver TX+RX combo New TX+RX Combo
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  • Description
  • Reviews(6)

What is the RMILEC NB20 UHF LRS radio system?

A Relay System

The RMILEC NB20UHF LRS Radio System is essentially a relay system for radio control and a Long Range System (LRS) all in one.


How does the system work?

Your existing transmitter sends a signal to your receiver which is connected to the NB20 transmitter (on the ground) The NB20 takes that signal and rebroadcasts it at an impressive 2 - 5.8w!(Selectable)


What is exactly special of NB20?

When the NB20 system is set up to use all of its 20 available channels your models parameters can be adjusted in flight, meaning a pilot and co-pilot / aerial videographer can work together with a single radio system.

What’s more, the new system offers vast improvements in both range and reliability as any source of interference can be quickly and accurately ruled out.


The NB20 adopts the very latest RF technology, providing very high adjacent channel rejection ratio and anti-blocking performance. The NB20 receiver can detect the frequency and amplitude of EMI interference with unbeatable accuracy and precision.



The RF performance of the latest NB20 system surpasses the older generation 4047 system. The system uses superfast processors for signal transmission and acquisition which delivers extreme accuracy. The NB20's transceiver makes full use of the bandwidth limitation which reduces the time for data exchange and frequency calibration.




The hardware operating frequency: 400-470Mhz

Use three frequency hopping. Scan interfering frequencies before TX(i.e., Listen

Before Talk).


The receiver has the spectral analysis ability with the range of 400~470mhz, which

leads to scan interfering frequencies of on board equipments in detail to select

frequency band with lowest background noise.


Models New Model NB20 V2 4047NB20
Signal Input PWM: Connect with V3 Version Signal Converter
PPM 2ch
SBUS 1ch
Control Signal: Internal Program
PWM 20ch
PPM 1ch
SBUS 1ch
Control Signal 1ch
RF Power for Output 0.5W 1W 2W 5W 2W 5W
Operating Frequency 400-470 Free Setting 433/435/444/455
Signal of Servo For Transmission   20ch
Notice: Click here to buy V3 Version Signal Converter

New function of New Model 4047NB20 V2:
System status display
Output servo display
Input signal analyze
Output channel editing
RC standby control, editable
RC power change, editable
Automatic heat dissipation
Improve heat sink channel
Compact installation design
Equipped with original Japan antenna
Easy installation


NB20-COMBO Features:

  • 2 ~ 5.8w of transmitting power!
  • Incorporates the very latest RF technology
  • High adjacent channel rejection and anti-blocking performance
  • Superfast processors for signal transmission and signal acquisition
  • Ultra efficient transceiver system
  • 20 channels of PWM, 18 channel SBUS or up to 14 PPM inputs



RF power

2 ~ 5.8w (peak)



Adjacent Channel Rejection


Anti Signal-blocking


Operating Frequencies

435+/-2.5,445 +/-2.5, 455 +/-2.5, 433ISM (selectable)

Signal of Servo For Transmission


Signal of Servo For Output

PWM output 20ch, PPM output 20ch, SBUS output 18ch

Input Mode


Input Voltage

12v DC

RF Module Weight


Signal Acquisition Module Weight


Receiver Weight



The package includes: 

1 x R4047NB20 20ch narrow band receiver with detachable antennas

1 X 20ch signal acquisition module 

1 x T4047NB20 RF Module with cooling fan

1 x Wiring kit




Average rating: 5.0 based on 6 reviews
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