Hi

I think the comment was in reference to the 10811 rather than the E1938A. 
I suspect it was targeted at the output buffer. 

Bob

> On Dec 25, 2021, at 11:56 PM, Richard (Rick) Karlquist 
> <[email protected]> wrote:
> 
> I'm sure I said that ... a long time ago.  I can't remember now what the fix 
> was, but I am fairly sure it would only apply to phase noise at
> more than 1 kHz offset.  If anyone can jog my memory about it I might
> be able to remember the details.
> 
> Rick N6RK
> 
> On 12/25/2021 2:09 PM, Stewart Cobb wrote:
>> Rick Karlquist mentioned some time ago that the phase noise of the E1938A
>> could have been improved by a simple change, but the production managers
>> were unwilling to apply that change because there was no customer demand
>> for it.
>> What was that change, and is it feasible for a skilled hobbyist to make
>> that change on an individual existing unit or two?
>> Cheers!
>> --Stu
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