R43305 Datasheet, PDF (2/3 Pages) List of Unclassifed Manufacturers – 433.920 MHz ASK RADIO DATA RECEIVER

Available Frequencies
SF2
433.664 MHz
SF3
433.408 MHz
SF4
433.152 MHz
SF5
434.688MHz
SF6
434.432 MHz
SF7
434.176MHz
SF8
433.792 MHz
SF9
434.304 MHz
Please quote Correct SF number when ordering transmitters on special frequencies.
Connections
ELSEMA
433.920MHz ASK Radio Data Receiver , R43305
R43305 Data Format
It is important to input the correct data format otherwise the receiver will have a lower sensitivity which will result in a reduced
transmission range.
The R43305 receiver data slicer is set for 50/50-duty cycle, therefore the “data in” should have a 50/50-duty cycle. The 50/50-duty cycle
data can be pulse-width modulated to transmit resets, 0's or 1's. See diagram below :
A 50/50-duty cycle will have an average DC signal resulting in a constant reference for the data slicer. Users should use pulse-width
modulation to transmit data with logic 1's or 0's.
If a different duty cycle is used, for example 66/33 ( Manchester format) the data slicer in the receiver will try to adjust itself to the
average DC signal. Since this average DC signal is changing with different data bits this will result in a constantly changing reference
for the data slicer, resulting in lower sensitivity. See diagram below :