I just measured the MDS of a production K144XV:  -145 dBm. This is  
with the module installed in a K3. It'll probably vary slightly from  
one unit to the next.

73,
Wayne

----
http://www.elecraft.com

On Jan 8, 2010, at 2:44 AM, "Geoffrey Mackenzie-Kennedy" <gm4...@btinternet.com 
 > wrote:

> David,
>
> Wayne said: "It's actually more like -144 dBm (500-Hz bandwidth)."   
> I assume
> that this refers to a K144XV installed in a K3.
>
> This equates to a noise figure of 3db.
>
> To achieve a lower noise figure, the gain used in the K144XV would  
> have to
> be greater, which would further reduce the overall dynamic range  
> (IMDDR3) of
> the K3 assembly on 2m.
>
> 73,
> Geoff
> GM4ESD
>
>
> David Pratt wrote on Friday, January 08, 2010 at 9:34 AM
>
>> In a recent message, AD6XY <m.j.wil...@rl.ac.uk> wrote ...
>>> I can not see any reference to noise figure in the brochure. Just  
>>> MDS and
>>> FM
>>> sensitivity with no bandwidth.
>>
>> The manual gives this as "1dB nominal".
>>
>> See
>> http://www.elecraft.com/manual/K144XV%20Manual%20A3.pdf
>>
>> 73
>> -- 
>> David G4DMP/G3KEP
>> Leeds, UK
>
>
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