SX1262+LoraMac-Node, wrong frequency?

bruno_aa
Tue, 12 Nov 2024 05:55:58 +0000
Generic Node

Hi,

I’m using a relatively old version of Loramac-node (4.4.7) with this board review that I’ve made with SX1262, it was working fine with the older revision using the SX1272, but I cannot get a single packet to TTN with this new board. Device is set as ABP for now.

During debug, I saw this packet was sent on channel 918.2MHz (by looking at SX126xSetRfFrequency() just before the TX), and I wonder if the frequency is ok, shouldn’t the 918.2 be the center frequency? The SX1272 that is working is indeed a bit more centered, but not completely.

I’ve setup a gateway to TTN using AU915, and this node is ~15m from it. The SDR capture was done close to the device antenna.

3 posts - 2 participants