Message	Date	From	Subject
5578	2010-12-26 18:03:07	Chris Waldrup	Crystal question
> > Hi Guys, > > I had a question about crystal stability. I normally use the full > size HC-49 microprocessor crystals for the oscillators of projects I > build. I see that the crystals available from Genesis Radio are the > short case variety, about 1/4 as high as a normal full size one. Are > these as stable as the full size ones? My QRP Labs 30 meter QRSS kit > uses the short one, but I have not compared its stability to a full > size crystal. I thought that the larger crystal size might give > better results due to larger thermal mass. This is a question in > general about crystals not specific to any project. > Thanks. > > Chris > KD4PBJ > > >

>

> Hi Guys,
>
> I had a question about crystal stability. I normally use the full
> size HC-49 microprocessor crystals for the oscillators of projects I
> build. I see that the crystals available from Genesis Radio are the
> short case variety, about 1/4 as high as a normal full size one. Are
> these as stable as the full size ones? My QRP Labs 30 meter QRSS kit
> uses the short one, but I have not compared its stability to a full
> size crystal. I thought that the larger crystal size might give
> better results due to larger thermal mass. This is a question in
> general about crystals not specific to any project.
> Thanks.
>
> Chris
> KD4PBJ
>
>
>