If rains! ARE ANTENNA NOT PROBLEAM

Is there any problem when it rains?

Do you mean with the krakentenna set, or in terms of interference from rain?

The krakentenna set is not weatherproof, but it will survive some rain. I would recommend drying off the telescoping section afterwards to remove any rain grime which could gum up the telescoping mechanism.

Rain will not cause any significant interference at the frequencies the KrakenSDR works with.