When heating a xtal up for the first time is a good idea to burn it in .
Leave the heater active for several days or longer and then you may find
the frequency may have shifted but will stay where it settled down. I
believe the heaters will come in different temps and it may be well worth
a check with the xtal manufactures to find a recommended temp
They do make a nice difference
Bob
temperature these are supposed to stabilise at?? My data book doesn't
quote
this. I have seen problems where the crystal used was not specified
for a
turnover at the 'oven' temperature, leading to worse stability than
without
using the tab. (crystals for use in ovened enclosure are usually cut
at a
slightly different angle I believe) Used correctly they should give a
order
of magnitude improvement for the guys with outside shacks!
Particularly if
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