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Lora-net / SWSD003

LR11xx chip (LR1110 / LR1120 / LR1121) and SX126x chip (SX1261 / SX1262 / SX1268) SDK
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LR1120DVK1TGKS basically no range #351

Open knuthcomi opened 4 months ago

knuthcomi commented 4 months ago

Having 2x LR1120DVK1TGKS with nucleo boards with default ping-pong build example. The maximum range I could get is around 10meters. Both boards have been updated to lates 0201 firmware for lr1120 Not sure whats happening. It can be something to do with RF switch on the board. Not sure where to start the debugging. I did measure RW switch control pins. And they seem to do the correct thing. V1 HIGH (switch RF to J2) while receiving. V2, HIGH ( switch RF to J1) while transmitting What else to check? They out of the box development boards, examples should also work. Thanks!

gc9n commented 4 months ago

check frequency ...

knuthcomi commented 4 months ago

check frequency ... Connected the dev kit to spectrum analyzer. Its exactly on 490mhz as it has to be. But only outputing 10uW. Althrought it has been set up to 13dbm. Also tried to measure before the antenna switch. The result was similar, around 10-20uW 436620810_971127681119684_2620579883635938379_n Kuvatõmmis 2024-05-18 152700