[time-nuts] Recommendations for a newbie?

[Bob Camp]

Hi

You will have a tough time with the 5372 running the longer time spans…

Bob

On Sep 8, 2012, at 9:08 PM, EWKehren at aol.com wrote:

> Sorry my mistake 5372A I will send you the data direct
> Bert Kehren
> 
> 
> In a message dated 9/8/2012 6:15:59 P.M. Eastern Daylight Time,  
> azelio.boriani at screen.it writes:
> 
> 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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