I am trying to communicate between two arduino microcontrollers using radio. For this purpose I am building a whip antenna with 4 ¼ wave radials. I've done a bit of reading and have got most of it, but all guides I've found are a bit vague on the topic of radials.
So my question is: When it says that Radials should be grounded, does that mean they have to be connected to the actual ground, or is the ground Pin on the arduino (the "minus pole") ok too? As my project is mobile, actual ground is pretty tough...