Hal Murray writes: > [email protected] said: >> The first one is designed to mount on a ground plane (which is fine if it is >> going on a truck or airplane). > > How big a ground plane do they need? I'm thinking of a sheet of aluminum.
Typically if they already have a ground plane mounted it's between 6cm…10cm in diameter (or side length if quadratic). Over that size you shouldn't see much effect anymore on the antenna sensitivity pattern, below that size you sometimes get a slight uplifting of the elevation response. I typically use the lid of a large enough can if I quickly need a circular ground plane, but a piece of aluminum foil just almost as well, too (wrap it around a piece of cardboard or plywood if you need structural stability). Regards, Achim. -- +<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk Blofeld]>+ SD adaptation for Waldorf rackAttack V1.04R1: http://Synth.Stromeko.net/Downloads.html#WaldorfSDada _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
