[time-nuts] Recommendations for a newbie?

[Azelio Boriani]

The HP5352A has a 2nS single shot resolution: how can you have 300pS or 1nS
measures?

On Sat, Sep 8, 2012 at 9:08 PM, Robert Liesenfeld <xunil at xunil.net> wrote:

> Wow, thank you everyone for the wealth of information and advice.  It
> sounds like for my needs, either the TBolt or HP Z-box will do just fine,
> and cost is going to be more of a driver than anything else.  It seems that
> the HPs are more plentiful on a certain well-known auction site, but
> Thunderbolts are cheaper.  I'll keep an eye out for good deals.
>
> Again, big thanks to everyone for the information, and for the welcoming
> atmosphere!
>
> -Rob
>
>
> On Sat, Sep 8, 2012 at 10:32 AM, Charles P. Steinmetz <
> charles_steinmetz at lavabit.com> wrote:
>
> > Said wrote (re: eBay 58503As):
> >
> >
> >  they work well for me, look brand-new, and came with power supply,
> rs-232
> >> cable, and antenna. I think it's a 5V antenna. The unit had about 37000
> on
> >> the lifetime.
> >>
> >> The seller has close up photos, that's what the units look like. I
> plugged
> >> in the power, ran GPSCon to start an Auto-Survey, and they just worked.
> >>
> >
> > Looking at the current and completed eBay listings for the 58503As from
> > Hong Kong, I notice that the seller seems to have conversion units based
> on
> > the Z3801 and on the Z3805, and some that may be factory 58503As.  The
> > listing text for all of them says they have 6-channel receivers.  Some
> have
> > no PPS outputs, some have one, and some have two.  Some have internal AC
> > power supplies, some have external supplies.  There appear to be at least
> > two different rear-panel layouts.  They are priced from $260 to $999, and
> > it does not seem obvious what justifies the radically different prices
> > (aside from different antennas).  Based on these confusing listings, I'd
> be
> > very reluctant to count on finding anything specific inside the housing
> > (e.g, a particular OCXO) if I bought one, except possibly the $999 units
> > that may be factory 58503As.
> >
> > Best regards,
> >
> > Charles
> >
> >
> >
> >
> >
> >
> >
> >
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