[time-nuts] eBay seller has Z3801A upgraded to 58503A

[Bob Camp]

Hi

Actually there *is* a reason for all the posts. This stuff comes onto the market very rarely. It *is* legitimate Time Nut gear. While it’s here at a low price it’s worth letting people know about it. The Z3801’s were a cheap item once upon a time (like $150 or so). The TBolt’s were sub $70 items for months on end. We can rightly (and very much should) debate the relative merits of each of these boxes. That’s what the list is for. Another valid use of the list is to let people know when stuff comes available. If you go back through the archives, one of the (many) recurring themes is “if I’d only known what those were back then I’d have bought one at that price”.  Part of that process is talking about how to set them up and get them working. 

The guy will run out of these soon and you can look forward to not hearing about them anymore ….

Bob


> On Nov 27, 2014, at 11:23 PM, Said Jackson <saidjack at aol.com> wrote:
> 
> Plus the Z3801A seems to just work.
> 
> On the Lucent boxes we had to suffer through many 100's of posts over the last month...
> 
> Sent From iPhone
> 
>> On Nov 27, 2014, at 16:57, Bob Camp <kb8tq at n1k.org> wrote:
>> 
>> Hi
>> 
>> Phase noise at 100 Hz, I’ll give you that on to the Z3801. ADEV on the sample I have of the 3801 and KS boxes are pretty darn close. 
>> 
>> Bob
>> 
>>> On Nov 27, 2014, at 6:45 PM, Said Jackson via time-nuts <time-nuts at febo.com> wrote:
>>> 
>>> The 58503A we got have much better ADEV and PN than what was posted recently on the Lucent boxes. TVB has many plots of the Z3801A on his website - same box.
>>> 
>>> They used to be $399 on eBay, now likely $500 or more, but you get what you pay for..
>>> 
>>> Sent From iPhone
>>> 
>>>> On Nov 27, 2014, at 16:14, Bob Camp <kb8tq at n1k.org> wrote:
>>>> 
>>>> Hi
>>>> 
>>>> Let’s say that an OCXO based new part is $500. Who knows if that applies to the Furry. If it does, that’s a really good price. Anything below that and Santa Claus is coming to your house early. 
>>>> 
>>>> Are you putting this in a commercial system?
>>>> 
>>>> Do you expect to need warranty support?
>>>> 
>>>> I’d bet the reasonable answer to both is no.
>>>> 
>>>> The KS boxes are $150 for the pair. They are new old stock. 
>>>> 
>>>> Do you believe the newer part works better than the KS ADEV wise?
>>>> 
>>>> Again I’d say the reasonable answer is no. The KS boxes are essentially the same as a Z3801 in terms of ADEV. 
>>>> 
>>>> You can get (in this example case) three of the KS box pairs and still save money over the new part. Shipping might tip that one way or the other. 
>>>> 
>>>> Why would this matter?
>>>> 
>>>> With three boxes, you can check them against each other and rule in / rule out problems with any one pair. That’s keeping everything plug and play. If you want to do a few “wire a connector” mods, you can have six sources to compare against each other. You can also have a whole bunch of spares ….
>>>> 
>>>> Bob
>>>> 
>>>> 
>>>>> On Nov 27, 2014, at 5:58 PM, Dr. David Kirkby (Kirkby Microwave Ltd) <drkirkby at kirkbymicrowave.co.uk> wrote:
>>>>> 
>>>>> Dr David Kirkby
>>>>> 
>>>>>> On 27 Nov 2014 23:27, "Brooke Clarke" <brooke at pacific.net> wrote:
>>>>>> 
>>>>>> Hi Dave:
>>>>>> 
>>>>>> http://www.ebay.com/itm/171504585820
>>>>>> 
>>>>>> http://www.prc68.com/I/LTE-LiteGPSDO.html
>>>>> 
>>>>>> Brooke Clarke
>>>>> 
>>>>> I was aware of them, and are still contemplating getting one, but the Fury
>>>>> from Jackson Labs uses an OCXO, so will have better performance.  I don't
>>>>> know what that costs though.  Clearly more than the LTE Lite.
>>>>> 
>>>>> Siad should consider putting the Fury on eBay,  but I would rather pay
>>>>> direct, which would save them the eBay fees, so hopefully cost me less.
>>>>> 
>>>>> Dave
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