I try something more with another node, 1060bd.
Yesterday this node opeartes with a SF7, then I shielded it for all the night and this morning I remove the shield and I found it with a SF12.
Then TTN start to send downlink msg every time the node send an uplink (every hour).
This is the mosquitto downlink log from yesterday till now:
Feb 17 09:18:27 senlab-t/devices/1060bd/events/down/sent {“payload”:“YOEvASaAFwACYNKhHPXwO+Zs3isTHM1fx1Ffv0A=”,“message”:{“app_id”:“senlab-t”,“dev_id”:“1060bd”,“port”:2,“payload_raw”:“AQcBAQcIBuMCBwgDXwkADw==”},“gateway_id”:“eui-1dee0eb900028599”,“config”:{“modulation”:“LORA”,“data_rate”:“SF7BW125”,“airtime”:66816000,“counter”:23,“frequency”:867700000,“power”:14}}
Feb 18 06:49:52 senlab-t/devices/1060bd/events/down/sent {“payload”:“YOEvASaFGAADVf8AAzz/Bqw=”,“message”:{“app_id”:“senlab-t”,“dev_id”:“1060bd”,“port”:0},“gateway_id”:“eui-1dee03a372f1126a”,“config”:{“modulation”:“LORA”,“data_rate”:“SF9BW125”,“airtime”:164864000,“counter”:24,“frequency”:869525000,“power”:27}}
Feb 18 07:49:39 senlab-t/devices/1060bd/events/down/sent {“payload”:“YOEvASaKGQAFA9KthANV/wADLIV4/Q==”,“message”:{“app_id”:“senlab-t”,“dev_id”:“1060bd”,“port”:0},“gateway_id”:“eui-1dee03a372f1126a”,“config”:{“modulation”:“LORA”,“data_rate”:“SF12BW125”,“airtime”:1482752000,“counter”:25,“frequency”:869525000,“power”:27}}
Feb 18 08:49:42 senlab-t/devices/1060bd/events/down/sent {“payload”:“YOEvASaKGgAFA9KthANV/wADYCLDlQ==”,“message”:{“app_id”:“senlab-t”,“dev_id”:“1060bd”,“port”:0},“gateway_id”:“eui-1dee1a0a6e94d4bf”,“config”:{“modulation”:“LORA”,“data_rate”:“SF12BW125”,“airtime”:1482752000,“counter”:26,“frequency”:869525000,“power”:27}}
Feb 18 09:49:50 senlab-t/devices/1060bd/events/down/sent {“payload”:“YOEvASaKGwAFA9KthANV/wADJbGK9Q==”,“message”:{“app_id”:“senlab-t”,“dev_id”:“1060bd”,“port”:0},“gateway_id”:“eui-1dee1a0a6e94d4bf”,“config”:{“modulation”:“LORA”,“data_rate”:“SF12BW125”,“airtime”:1482752000,“counter”:27,“frequency”:869525000,“power”:27}}
Feb 18 10:49:41 senlab-t/devices/1060bd/events/down/sent {“payload”:“YOEvASaKHAAFA9KthANV/wADHOnA3Q==”,“message”:{“app_id”:“senlab-t”,“dev_id”:“1060bd”,“port”:0},“gateway_id”:“eui-1dee1a0a6e94d4bf”,“config”:{“modulation”:“LORA”,“data_rate”:“SF12BW125”,“airtime”:1482752000,“counter”:28,“frequency”:869525000,“power”:27}}
Feb 18 11:50:04 senlab-t/devices/1060bd/events/down/sent {“payload”:“YOEvASaKHQAFA9KthANV/wADtk6xvQ==”,“message”:{“app_id”:“senlab-t”,“dev_id”:“1060bd”,“port”:0},“gateway_id”:“eui-1dee1a0a6e94d4bf”,“config”:{“modulation”:“LORA”,“data_rate”:“SF12BW125”,“airtime”:1482752000,“counter”:29,“frequency”:869525000,“power”:27}}
Feb 18 12:49:36 senlab-t/devices/1060bd/events/down/sent {“payload”:“YOEvASaKHgAFA9KthANV/wADcpP3+A==”,“message”:{“app_id”:“senlab-t”,“dev_id”:“1060bd”,“port”:0},“gateway_id”:“eui-1dee1a0a6e94d4bf”,“config”:{“modulation”:“LORA”,“data_rate”:“SF12BW125”,“airtime”:1482752000,“counter”:30,“frequency”:869525000,“power”:27}}
Feb 18 13:49:56 senlab-t/devices/1060bd/events/down/sent {“payload”:“YOEvASaNHwACFwEFA9KthANV/wADQ9uFew==”,“message”:{“app_id”:“senlab-t”,“dev_id”:“1060bd”,“port”:0},“gateway_id”:“eui-1dee1a0a6e94d4bf”,“config”:{“modulation”:“LORA”,“data_rate”:“SF12BW125”,“airtime”:1482752000,“counter”:31,“frequency”:869525000,“power”:27}}
I’ve also catched the last one downlink (13:49:56) with the TTN console, that shows the ADR commands:
I don’t know if the link-adr commands are correct, from the mosquitto log there is a “config” payload that I don’t know if refers to the current condition or represent a configuration command.
In case the adr command are really trying to lower the SF, it could be that the problem is the gateway or the node.
Gianluigi