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CC1101-CC1190EM869RD: Poor Range with TrxEB

Part Number: CC1101-CC1190EM869RD
Other Parts Discussed in Thread: CC1101, CC1120, CC1190

Hi, 

I have a TrxEB and CC1101_CC1190EM 868Mhz 2.1. I have configured the TrxEb to work with CC1120 and selected the PER test. The range which I see is about 200m, beyond which the PER is 100%. 

Under the same conditions, when I connect the CC1120 with TrxEB, i get a range of about 900m. 

CC1190 is supposed to have higher Tx power and better sensitivity so can expect a higher range but Its not seen to be so.. 

  • - "I have configured the TrxEb to work with CC1120 and selected the PER test": I assume you mean CC1101 since this is the board you are testing?
    - I assume you have tested that the PA and LNA enable signals for CC1190 are set correctly and that this is measured?
    - Have you checked that the frequency the TX side uses is the same as you have programmed. Also check frequency offset, you can risk that the SAW filter starts filtering the wanted signal if the system has a frequency offset.