European 72MHz frequencies ?
Electric doesn't cut it. I use 3W power. The propeller is present in so little of the column of air sampled by the net, that damage to insects or fungal spores is not detected.
The airplanes are similar to the idea of the tugboats who move large ships to dock. Way over powered to drag a very draggy device through the air. Deployed insect nets we use generate between 3.5 and 8 lbs of drag depending on size. It takes a lot of engine to overcome this drag and remain flying.
Elson