Back in college we built a chain of homemade, High Frequency Generator , ~15kv capacitors in a spark gap generator. Connect 10 in series and add a nice horn antenna and we could EMP a cheap radio at 10ft.
Of course it was about 10ft long, contained tubs filled with oil, and would ark to anything near it…but it was a weapon. Just not a practical one.
Yes, just make sure your enemy will stand still as you move truck it into place, aim it, fire up the generator, charge the caps for a bit, and will hold their small electronic device , High Frequency Generator , near the end with all the sparks.
Nice Battlefield:
‘Ha ha, you can’t call for help now….hold on….just a bit longer….umm..could you please move over a foot to the left….much better….hold on….a bit closer….there…muahhahaha I have you now!!! Damn! Missed. umm…Mind if I try once more?’ So High Frequency Generator = bad weopens lol