Hello, I just did some experiments using a ceramic patch antenna inside a small plastic (80 x 30 x 20mm) screw box and experienced much bader signals at lower elevations. The plastic is marked as PS (I guess polystyrole ?). Further experiments covering a GPS with the same kind of box seemed to effect the signals too. On the other hand covering the patch with a flat pcs of the same material didnt effect the antenna.
Is there possibly a cavity effect? What to take best? Any ideas? Thank you Peter, DG4EK _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
