[time-nuts] Symmetricom X72
stanw1le at verizon.net
Sat Jul 24 20:43:34 UTC 2010
The Trimble Thunderbolt GPS/DOs have been on a nice learning curve. Lady
Heather helps alot to understand what is going on.
Checking and calibrating your freq counter to the stuff you have at work
is a great idea.
Just keep in mind the basic accuracy of the aade stuff, after you get
For my 10 GHz transverter I use a externally boxed up ISOTEMP 10 MHz
xtal bases OCXO with voltage control.
Before a radio contest I will warm up the OCXO for a few days, then I
measure it with a freq counter using the GPSDO as reference.
Adjusting as needed.
I do not think you can go wrong with a Trimble T'Bolt. Cost effective fun.
On 7/24/2010 3:32 PM, Heathkid wrote:
> 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?
> ----- 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
>> At least looking at the spec sheet it's not really very impressive.
>> On Jul 23, 2010, at 11:06 PM, Heathkid wrote:
>>> Hello. Does anyone have any experience with the Symmetricom X72?
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