Tool/software:
Hi
We have encountered a severe packet loss problem with some but not all CC1352P revision F chips on 868MHz band
We are using prop protocol, 2-GFSK, 10kbps, 5kHz deviation, rxBw 136kHz, custom board
Problematic revision F chips can receive usually only one packet out of 10. Lost packets are just lost, not marked as crc-invalids and no syncword detections. Rssi for received packet is reasonable -60dBm.
With revision E chips receive works without problems, all packets are received
If we reduce rxbw from 136kHz to a value between 24.5 and 34.1 kHz problem seems to disappear, no packet loss anymore. At 38.9kHz packet loss begins to appear again, 3 to 4 packets out of 10 are lost.
On the 2.4GHz-band this problem is not detected, also packet TX works as expected on both bands.
How can we debug more this problem? Is it really related to F-revision or rxBw, are chips damaged during manufacturing, or is it between chip and antenna, or where?
We are already ruled out our firmware, we can repeat this problem by driving radio with smartrf studio
