[time-nuts] Best choice for house 10MHz reference...??

[James R. Gorr]

Sorry for the noise!  --Jamie

--- "James R. Gorr" <n3toy at yahoo.com> wrote:

> 
> Hi George,
> 
> What are you asking for a Thunderbolt?
> 
> Jamie
> 
> --- George <n4ua.va at gmail.com> wrote:
> 
> > John Miles wrote:
> > > As unhappy as you may be to hear it, Mike,
> you're
> > done upgrading, at least
> > > for now.  Thunderbolts are about as good as they
> > get.  Yes, some units like
> > > the HP and Jackson Labs clocks can do somewhat
> > better, and with
> > > entirely-different equipment, you might be able
> to
> > tell.  Not with the 49xP
> > > analyzer, though.
> > >
> > > Your 497P is limited by its 1-Hz counter LSD,
> not
> > the Thunderbolt.  1E-10
> > > accuracy from the Thunderbolt is 1 Hz at 10 GHz,
> > and that's about what the
> > > Thunderbolt does at tau=1s, even though the spec
> > sheet shows it closer to
> > > 1E-9 at t=1s.
> > >
> > > That means that there is no conceivable benefit
> to
> > further upgrading the 10
> > > MHz reference beyond where you already are.  I
> > know, I know, that's the
> > > worst news of all. :)
> > >
> > > Focus on giving the Thunderbolt the best signal
> > you can, via antenna
> > > mounting.
> > >
> > > -- john, KE5FX
> > >
> > >   
> > And, if anyone out there still need a Thunderbolt
> > (for less than the 
> > ebay price), I have a few more OEM units
> available.
> > 
> > 73,
> > 
> > geo - n4ua
> > 
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> > 
> 
> 
> 
>      
>
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