SX1278 Wireless Module E32 Series User Manual
Copyright ©2012–2017, Chengdu Ebyte Electronic Technology Co., Ltd. 7 / 24
2.3.2 Receiving sensitivity
● The sensitivity is tested under the air data rate 0.3kbps，
coding rate of 4/5 and spreading factor of 12;
● Due to the error of the materials, each LRC component
has ± 0.1% error, so error accumulation will occur since
multiple LRC components are used in the whole RF circuit,
and the transmitting currents will be different at different
modules;
● The receiving sensitivity will be reduced and
communication range will be shortened while increasing
the air data rate.
2.3.3 Recommended working frequency
● To work within the recommended frequency can assure
the modules to meet all the parameters
● To avoid the crowded integral frequency like 433.0MHz、
868.0MHz、915MHz etc. is advisable.
2.4 Tested range
● The external antenna used is of 5dBi gain and vertical
polarization. The height is 2.5 meters;
● The interval between each data packet is 2s, sending 100
packets with 30 bytes in each packet, the range at data lose
rate of lower than 5% is valid range;
● In order to obtain meaningful and reproducible results,
we conducted the tests under in clear weather with little
electromagnetic interference at suburb areas；
● Distance may be shorter with interference or obstacles.
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