[time-nuts] Making a HP 10811 better

[EWKehren at aol.com]

I am still looking for them this was eighteen years ago and I was not in to 
 it and used it as a poor man's frequency standard. I only joined time nuts 
last  year, have learned a lot and am just now putting in place equipment 
to measure.  Still waiting for Corby to complete some tests to release the 
Dual Mixer as of  today we are still stuck at 3 E-13 not bad for a system with 
counters at less  than $ 200, but the goal is 1 E-13.
Bert
 
 
In a message dated 3/29/2010 3:52:45 P.M. Eastern Daylight Time,  
tractorb at ihug.co.nz writes:

Bert
Want to share the results?
More info re the experiment  would be of interest as well.
DaveB, NZ

----- Original Message -----  
From: <EWKehren at aol.com>
To: <time-nuts at febo.com>
Sent:  Tuesday, March 30, 2010 6:32 AM
Subject: Re: [time-nuts] Making a HP 10811  better


>I would not feel comfortable tearing into the  unit.
> Controlling its environment and power to it yes.
> I did  that with a 10811 and a 10544 years ago by drilling a 20 foot 
>  hole
> in my Dallas backyard lowering the units in it with support  
> electronics in
> place and sealing the shaft with individual  sand bags each with a 
> numbered
> string, so I could pull them  out one at time when I had to get to 
> them. Did
> not  have  the equipment I have today but I did manage to borrow a 
> 5061A  for
> set up.  Here in Miami being right on the water it is not an  option. 
> When I
> relocate  from Miami to dryer grounds I  may repeat it with a 
> Rubidium.
>  Bert


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