In article , Henry
Kolesnik writes
Mark
Any more info on the jumpy HPs appreciated.
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73
This thread seems to be cloned from last week ; anyway as I said then
silver mica are known to be subject to scintillation which may be due to
de-lamination , later mica used powdered mica which may or maynot be
better. Encapsulated low value caps are often degraded by the
encapsulation material so sm would be better use NPO ceramic, microwave
types should be lower loss.
Crystals jump in a changing temperature due to unwanted modes passing
through the main mode as they have different temperature coeggicient.
These are fairly gross effects of .01 to 10ppm jumps.

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ddwyer