[time-nuts] Recommendations for a newbie?
Bob Camp
lists at rtty.us
Sun Sep 9 01:34:56 UTC 2012
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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