A new 122mm self-propelled howitzer with what appears to be an integrated auto-loader.
Let’s not forget hardened drone electronics is not the only, or perhaps even main, target for microwave weapons. I don’t imagine the fuses/warheads of your current FPV drones will react well to being targeted by microwave energy weapons. Doesn’t matter if your drone has a faraday cage around its electronics if the RPG it’s carrying detonates.