I'm doing a first tx/rx on a pair of modules, and some hams have alluded that they 'autoadjust' - since I've soldered halfwave antennas onto the modules, what's the optimal range for first tests? And will I benefit from 1/2 or 1/4 wave radials? I was thinking about 4-6 spokes from a bicycle wheel. Also, what library would be best for RC control of a medium power pump - I'm pretty sure it's going to induce noise. How far away from the pump should I position the rx module? Thanks in advance.