"IRAN’S FAILED EXPORT: Last night, 54 Iranian-made Shahed-136 UAVs were fired at Kyiv, the largest bombardment since the RU invasion began 15 months ago. 52 incoming Shaheds were downed by UKR air defense, an interception rate of better than 96%."
As shown in the pictures above, the Gepard uses radar to acquire and track the Shaheds which would indicate the Shaheds are not stealthy.