Hello,
- I have used two different antennas on the same end node device and tested them both in same conditions.
- I have enabled Adaptive Data Rate (ADR) for both tests but have got no change on one and proper change on the another.
- I have shared the spreading factors and SNRs of both tests below.
| Range (m) | 20 | 40 | 60 | 80 | 100 | 120 | 140 | 160 | 180 | 200 | 210 | 230 | 260 | 280 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Antenna 1 | SF7 | SF7 | SF7 | SF7 | SF7 | SF7 | SF7 | SF7 | SF7 | SF7 | SF7 | SF7 | SF7 | SF7 |
| 4 | 2.2 | 0.5 | 0.5 | -1.5 | -1 | -7 | -5 | -2.8 | -2.2 | -6.8 | -8.8 | -7.5 | -6.8 | |
| Antenna 2 | SF7 | SF8 | SF8 | SF9 | SF9 | SF9 | SF10 | SF10 | SF10 | SF11 | SF12 | SF12 | SF12 | SF12 |
| 10.2 | 8.7 | 8.1 | 6.3 | 5.8 | 2.5 | 1.8 | 1.3 | 0.9 | -1.7 | -3.1 | -8.9 | -11.8 | -16.2 |
- At longer distances the SNR of the Antenna 1 didn’t drop much but the packet losses was very high, due to which only 1 out of 10 data packets would reach the LNS.
- The Antenna 2 device worked correctly.
What could be the issue?