[time-nuts] Anyone have a comparison of the Z3805A and a Tbolt?

[Pete Lancashire]

Is there an external way on the 3805's to id the desired 10811 ? S/N or ?
Ditto on the 10811's

-pete

On Mon, Sep 6, 2010 at 11:31 AM, Bob Camp <lists at rtty.us> wrote:

> Hi
>
> I have a couple 3805's and more than a couple TBolts.
>
> There are two 3805's, one has the double heated 10811 the other has a true
> double oven. The true double oven / later design is the one you want.
> Typically they have better TC and better ADEV at 10 seconds compared to the
> earlier part.
>
> The TBolt has a much better GPS receiver in it and it is far more tweak
> able with the Lady Heather software. It's default settings are not as good
> as the defaults on the 3805. With some work they can be vastly improved.
>
> The 3805 runs on a single 24 or 48 volt supply depending on the model you
> get. The TBolt needs +12, +5 and -12. Battery backup is easier on the 3805.
>
> TBolts run $75 +/- 25. 3805's run $250 +/- $50. Shipping will be a bit more
> on the 3805.
>
> The TBolt wins in bang for the buck and fun to tweak categories. The 3805
> is the better plug it in and ignore it forever box.
>
> Both will track a cesium well at 100,000 seconds and beyond. Both look a
> lot like GPS at 100 seconds or so. Both have some significant variation unit
> to unit.
>
> Bob
>
>
>
> On Sep 6, 2010, at 11:13 AM, swingbyte <swingbyte at exemail.com.au> wrote:
>
> > Hi All,
> > Have been thinking of getting a GPSODO and I'm looking for advice on what
> to choose.  I haven't been able to find an ADEV comparison between these two
> units and am curious to know how their differences manifest themselves.
>  Apart from the 12 satelites vs 8 what practical advantages are there in the
> 3805A over the Tbolt?  With all the extra components there has to be
> something.  I notice that the ocxo is not the large Docxo of the 3801A -
> which is better?
> >
> > Thanks
> >
> > Tim
> >
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