[time-nuts] 20Hz p-p / 24 hours with a Mini-T (Mike Feher)

Miguel Checa mac at checa.us
Sat Jan 10 03:34:08 UTC 2009


Mike,

Yes, sorry. 10MHz x 2900 for the LO, +/- 10Hz at 29GHz.

In fact, the mini-t has good stability, it goes down to +/- 6Hz 
---EXCEPT--- when it loses the last satellite and we don't know why it 
does that. With Time constant=3600sec the unit can do +/-3Hz.

As I said, the satellites are there but it uses the best for time, the 
monitor reports all the others as tracked but not used, funny thing is 
the signal (AMU) reported is either 0.8 or 1.0 for all those, my guess 
is the unit ignores them and forgets all about them and when the one in 
use goes down, the mini-t goes to bed...

Trimble said today they have a solution...we'll see. Regards,

Miguel
W4/LU4AXC
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Fri, 9 Jan 2009 08:00:24 -0500
> From: "Mike Feher" <mfeher at eozinc.com>
> Subject: Re: [time-nuts] 20Hz p-p / 24 hours with a Mini-T
> To: "'Discussion of precise time and frequency measurement'"
> 	<time-nuts at febo.com>
> Message-ID: <A6B8312C63B0412F987AD5F730BCC94D at gsmacdq14es>
> Content-Type: text/plain;	charset="us-ascii"
>
> Mike -
>
> You may want to mention that this requirement is to be met at 30.5 GHz.
> Regards - Mike
>
>  
>  
> Mike B. Feher, N4FS
> 89 Arnold Blvd.
> Howell, NJ, 07731
> 732-886-5960
>  
>   
>   




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