Heltec ESP32 LoRa (V2)

Tenho um node WiFi LoRa 32 (V2) da Heltec (https://heltec.org/project/wifi-lora-32/) pra utilização na frequência AU915.

Estou tentando enviar pacotes com a mensagem “HelloWorld”, porém todas chegam com erro de CRC no gateway e consequentemente não são encaminhadas para o processo de forwarder. No momento não é minha preocupação métodos de ingresso a nenhum servidor LoRaWAN.

O node foi configurado para AU915 assim como o gateway. A distância entre os dois não ultrapassa 5m. Já tentei aumentar e diminuir txPower, utilizar LoRa.enableCrc(), infelizmente todas tentativas sem sucesso.

Alguma sugestão do que possa estar acontecendo?

** Trecho do log do gateway **
JSON up: {“stat”:{“time”:“2020-02-28 19:31:33 GMT”,“rxnb”:5,“rxok”:0,“rxfw”:0,“ackr”:100.0,“dwnb”:0,“txnb”:0}}
INFO: [up] PUSH_ACK received in 2 ms
INFO: [down] PULL_ACK received in 1 ms
INFO: [down] PULL_ACK received in 2 ms
INFO: [down] PULL_ACK received in 1 ms
INFO: Disabling GPS mode for concentrator’s counter…
INFO: host/sx1301 time offset=(1582914481s:568728µs) - drift=1124µs
INFO: Enabling GPS mode for concentrator’s counter.
2020-02-28 19:32:03 GMT
[UPSTREAM]
RF packets received by concentrator: 5
CRC_OK: 0.00%, CRC_FAIL: 100.00%, NO_CRC: 0.00%
RF packets forwarded: 0 (0 bytes)
PUSH_DATA datagrams sent: 1 (113 bytes)
PUSH_DATA acknowledged: 100.00%
[DOWNSTREAM]
PULL_DATA sent: 3 (100.00% acknowledged)
PULL_RESP(onse) datagrams received: 0 (0 bytes)
RF packets sent to concentrator: 0 (0 bytes)
TX errors: 0
BEACON queued: 0
BEACON sent so far: 0
BEACON rejected: 0
[JIT]
SX1301 time (PPS): 3842405811
src/jitqueue.c:448:jit_print_queue(): INFO: [jit] queue is empty
[GPS]
Invalid time reference (age: 1582918323 sec)
no valid GPS coordinates available yet
END
JSON up: {“stat”:{“time”:“2020-02-28 19:32:03 GMT”,“rxnb”:5,“rxok”:0,“rxfw”:0,“ackr”:100.0,“dwnb”:0,“txnb”:0}}
INFO: [up] PUSH_ACK received in 1 ms
INFO: [down] PULL_ACK received in 1 ms
INFO: [down] PULL_ACK received in 1 ms
2020-02-28 19:32:33 GMT
[UPSTREAM]
RF packets received by concentrator: 3
CRC_OK: 0.00%, CRC_FAIL: 100.00%, NO_CRC: 0.00%
RF packets forwarded: 0 (0 bytes)
PUSH_DATA datagrams sent: 1 (113 bytes)
PUSH_DATA acknowledged: 100.00%
[DOWNSTREAM]
PULL_DATA sent: 3 (100.00% acknowledged)
PULL_RESP(onse) datagrams received: 0 (0 bytes)
RF packets sent to concentrator: 0 (0 bytes)
TX errors: 0
BEACON queued: 0
BEACON sent so far: 0
BEACON rejected: 0