At last it worked ! Here's a short video, not high quality indeed. Hope it is intelligible.Autopilot_Test_Air_LD.wmvHere's some pictures of the airframe.FrontBackCloseup of camera, thermopile stabilizer, GPS, video transmitter, ground plane antenna."da braain"brain's right emispherebrain's left emisphere
Wayne anticipated me. It's the antenna of yb2normal with ground wires made with piano wires instead of copper. Basically the wires are of lambda/4 length, i.e. (3E8 / 2.4E9) / 4 = 3.125 cm.
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looks like that antena:
http://www.yb2normal.com/flightindex.html