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    Best posts made by grau

    • RFM69_RFM95_ATC_SignalReport

      Hi there,
      I'm trying to get a feeling (distance/quality/speed/range/usability) for RFM95 (868Mhz) modules and so I started with an ESP8266 as RFM95 MQTT gateway and a Pro Mini with RFM95 and RFM69_RFM95_ATC_SignalReport.ino Sketch I found in examples with

      #define MY_RFM95_ATC_TARGET_RSSI_DBM (-70)  // target RSSI -70dBm
      #define MY_RFM95_MAX_POWER_LEVEL_DBM (10)   // max. TX power 10dBm = 10mW
      

      Following values are reported back to my gateway. I'd really appreciate a short explanation, what to "expect" from these values (similar to "values from 0 to 10, 10 best"):

      SR_UPLINK_QUALITY
      SR_TX_POWER_LEVEL
      SR_TX_POWER_PERCENT
      SR_TX_RSSI
      SR_RX_RSSI
      SR_TX_SNR
      SR_RX_SNR
      

      Following values for 1m distance between gateway and sender and I have honestly no idea what those values are telling me:

      SR_UPLINK_QUALITY 0 
      SR_TX_POWER_LEVEL 5
      SR_TX_POWER_PERCENT 0 
      SR_TX_RSSI -34 
      SR_RX_RSSI -27 
      SR_TX_SNR 9 
      SR_RX_SNR 9
      

      What is uplink quality telling me and why it's 0, why is TX power percent 0 and power level 5? Looking forward to hear from you.

      Cheers,
      Thomas

      posted in General Discussion
      grau
      grau