[time-nuts] Symmetricom X72

Heathkid heathkid at heathkid.com
Sat Jul 24 15:32:38 EDT 2010


Hello Bob,

What would you recommend?  I already have three FE-5680A Rb standards (which 
I'm quickly learning likely aren't worth the powder to blow them to (*insert 
your own word here*).  Okay, that was probably my first mistake (thoughts?).

My frequency counter is one I built from a kit from aade.com that has the 
TCXO option (although I had to tweak it myself so I have NO idea how close 
it is to any accuracy or precision).  I have access to some really nice HP 
counters at work so that's my next step is to try one of those.  My DFD4 
measured the output of one of my 5680A's to 10.000.007 MHz after about a 10 
minute warm-up.  I don't know which one is off.  Reading the specs on the 
5680A's before I bought them looked like they were pretty decent.  I'm 
learning...

So, what "reasonably priced" Rb standard would you recommend?

Should my next step in this process be a Trimble Thunderbolt?  Am I starting 
over?

Thanks...

----- Original Message ----- 
From: "Bob Camp" <lists at rtty.us>
To: "Discussion of precise time and frequency measurement" 
<time-nuts at febo.com>
Sent: Saturday, July 24, 2010 9:31 AM
Subject: Re: [time-nuts] Symmetricom X72


> Hi
>
> At least looking at the spec sheet it's not really very impressive.
>
> Bob
>
>
> On Jul 23, 2010, at 11:06 PM, Heathkid wrote:
>
>> Hello.  Does anyone have any experience with the Symmetricom X72?
>>
>> Thanks...
>>
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>
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