Hello guys,
I am using Heltec module for LoRa data Transmission. But, i also had an issue about Communication Range, what should i do? What should i change?
A bit hard to say. If signal strength is too weak, there is not much that software can fix about that.
Can you show us the code? (something like a github link is preferred, don’t copy the code here)
You need to tell us the exact module number, heltec makes a number of different LoRa boards.
I can at least recommend to enable automatic-data-rate (ADR), which should be enabled by default with MCCI LMIC. So if you’re hard-coding your spreading factor, for example, stop doing that.
If the board has an antenna RX/TX switch, the pinmap configuration should be correct so that the switch is actuated correctly. Otherwise you may get only very short range (or none at all).
Also pay attention to the antenna, it should match the frequency you want to be working on. You can’t use a random 2.4 GHz WiFi antenna for the 868 MHz band. Generally the antenna should point up (not towards the gateway).
As you’ve not said what actual range you have, so the question is very very vague.
Perhaps you could tell us what range you get, what you think you should get and the arrangements you’ve made for the antennas & what RSSI figures you are getting.