[time-nuts] Austron 2201, Tbolt, HP 3801 comparison question

[Tom Knox]

In my earlier post I was referring to my 2002 TBolt not matching the performance of my 2201 or HP Z3801A rec. I am sorry to rehash an old discussions, does anyone have a link that details TBolt evolution. I am familiar with the mid 2001 change from the Piezo to Trimble oscillator, but I do not know much about the timeline of more recent changes. thanks

Thomas Knox



> From: wb6fly at verizon.net
> To: time-nuts at febo.com
> Date: Fri, 6 Apr 2012 13:55:07 -0700
> Subject: Re: [time-nuts] Austron 2201, Tbolt, HP 3801 comparison question
> 
> Paul,
> 
> I assume that "Tbolt" refers to the older 8-channel Thunderbolt with the
> Trimble OCXO.  I have two of that model, plus I have a new 12-channel
> Thunderbolt E that is equipped with a "Double OCXO" and is noticeably more
> stable than the earlier models.  While the earlier models might show 10 MHz
> offset peaks of as much as 80 ns, the Thunderbolt E consistently shows no
> more than 2 or 3 ns offsets.
> 
> 73, Eric Lemmon WB6FLY
> 
> 
> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
> Behalf Of paul swed
> Sent: Friday, April 06, 2012 1:24 PM
> To: paul swed; Time-nuts
> Subject: [time-nuts] Austron 2201, Tbolt, HP 3801 comparison question
> 
> Recently I put a 2201 back into service with  a home brew down converter.
> I am a bit surprised that when I use it to measure the Tbolt and then the
> HP 3801.
> The 3801 comes out always better by a decade actually. Granted what I am
> seeing is way down below a e-12th and in fact what I am reading seems nuts
> to me.
> But can a 3801 run that much better then the Tbolt?
> I kind of thought they would both be in the same region.
> Thanks
> Regards
> Paul
> WB8TSL
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