Comparison between the new and old
models
Similarities
TX:
The hardware operating frequency: 400-470Mhz
Use three frequency hopping. Scan interfering frequencies before TX(i.e., Listen
Before Talk).
RX:
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.
Differences
(Values below are typical.)
Differences
New model 4047NB20
Old Model 4047
Average RF
power
5w (peak number is 5.8W )
1.6w (peak number is
2W)
Sensitivity
-115 dBm
-112dBm
Adjacent
Channel
Rejection
Very High
LOW
Anti
signal-blocking
Very High
LOW
Default
operating
frequency
435+-2.5
、
445+-2.5
、
455+-2.5
、
433ISM
435+-10
、
433ISM(internal jumper
settings)
Signal of servo
for transmission
20 channels
10 channels
Signal of servo
for output
PWM output 20 channels PPM output
20 channels SBUS output 18 channels
PWM8 channels PPM 10
channels
Input Mode
PPM, PWM,SBUS
PPM \ PCM 1024-F
Control
Mode
one to many
One to one
