it's much cheaper to defend against EMP (Faraday shield) than to make EMPs
the fact that EMP blasts are not used in Ukraine, by both sides, to defend against drones also shows its not such a good idea
the fact that EMP blasts are not used in Ukraine, by both sides, to defend against drones also shows its not such a good idea
Maybe smaller scale DIY EMPs wouldn't be as effective as I think, they would have to be pretty close to their target to do real damage to non-radio devices, however I think collateral damage is the biggest reason we don't see them.
Drones are weak and fragile enough already that it just easier to shoot or blow them up rather than try to lob a grenade sized EMP up near them, a regular grenade explosive would be similarly or more effective without the extra complexity. But something like a mobile turret platform or multiple smaller ground bots I can see it being the best option.