[time-nuts] GPS ceramic patch in what plastic housing?
magnus at rubidium.dyndns.org
Sun Sep 5 20:52:49 UTC 2010
On 09/05/2010 10:06 PM, Peter Krengel wrote:
> Thanks Robert, Stanley and Bob for the tips.
> I tested some materials in a microwave oven and they all seemed to
> be good because there was no heating (maybe handwarm at 800W).
> So the magic word seems to be refracting effects even at 1.5GHz...
> As I cannot get a commercial helf sphere for putting over the patch
> has anyone an idea what to take for i.e. from kitchen?
One should recall that some plastics absorb more water than others... so
unless one has a good info on their absorbtion, putting them into water
overnight and the pour it out and wipe it clean just prior to microwave
it would form a better simulation...
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