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Small k on my antenna

Posted: Fri Feb 17, 2023 8:47 am
by NinoZore
hello guys i have a problem ,my bluetooth program only work on esp32 Dev kit who has an small k on the antenna
IMG_20230217_094057.jpg
IMG_20230217_094057.jpg (493.59 KiB) Viewed 2258 times
and dont work for esp who dont has this small letter ,i dont understand what this small letter mean ?!? Version of the esp32 ? low quality copy ? i dont understand !
Thanks for your help
Nino =)