[time-nuts] GPS ceramic patch in what plastic housing?
lists at rtty.us
Sun Sep 5 17:35:12 UTC 2010
What are you trying to achieve ?
If you are looking for a simple cover for the patch, the microwave oven is your friend. Anything that heats up in a microwave is a bad idea, unless it's thin. Most materials with a variable cross section will act as a lens to some extent.
On Sep 5, 2010, at 12:12 PM, "Peter Krengel" <krengeldatec at gmx.de> wrote:
> 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 -- time-nuts at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.
More information about the time-nuts