Hello, thank you very much for your answer.
Unfortunately I do not have a VNA, when I bought my Lora mini gateway, it came with this antenna, I thought that the manufacturers could help me with the technical data, to simulate the coverage in a sorftwate, I have the following module:
Lora mini gateway at 915 Mhz.
I have searched the internet and I only find this model
Physically it is identical but it is 415Mhz.
My gateway is 915 Mhz all of a sudden they gave me the wrong antenna u.u
I just need to know the technical data to do my research work.
I hope you can help me, thank you very much everyone !!