Corrupt link statistics frame form the receiver

[vanurag]

Hey guys, I am using the following setup:

• TX hardware: RadioMaster Ranger Micro 2400 TX
• RX hardware: RadioMaster RP3 Diversity 2400 RX
• Handset model: Frsky Taranis X7S
• Flight controller: Pixhawk FMUv5, CRSF serial protocol
• OpenTX version (including nightly number): v2.3.15
• ExpressLRS version (TX & RX MUST MATCH): 3.2.0
• Packet Rate: 100 Hz, 16ch Rate/2
• Telemetry Ratio: 1:128 telem ratio

On the FC, I parse incoming frames for both rc_channels_packed: type ‘0x16’ and link_statistics: type ‘0x14’. Usually, I have very good link quality, but I am receiving every now and then a corrupt link_statistics frame (see below), while the link is still stable (no RC loss). This happens even at close range. Can anyone guide me on how to debug such an issue? Is this something I should be worried about? aka, does this imply a poor RC link?

{
"timestamp": "1693400665339864",
"uplink_rssi_1_inv": 67,
"uplink_rssi_2_inv": 48,
"uplink_link_quality": 100,
"uplink_snr": 14,
"active_antenna": 1,
"rf_mode": 4,
"uplink_tx_power": 3,
"downlink_rssi_inv": 0,
"downlink_link_quality": 0,
"downlink_snr": 0
}

{
"timestamp": "1693400665455865",
"uplink_rssi_1_inv": 67,
"uplink_rssi_2_inv": 50,
"uplink_link_quality": 0,
"uplink_snr": -90,
"active_antenna": 97,
"rf_mode": 23,
"uplink_tx_power": 200,
"downlink_rssi_inv": 24,
"downlink_link_quality": 22,
"downlink_snr": -32
}

{
"timestamp": "1693400665540295",
"uplink_rssi_1_inv": 67,
"uplink_rssi_2_inv": 49,
"uplink_link_quality": 100,
"uplink_snr": 14,
"active_antenna": 1,
"rf_mode": 4,
"uplink_tx_power": 3,
"downlink_rssi_inv": 0,
"downlink_link_quality": 0,
"downlink_snr": 0
}