Elecraft[K-3] K144XV

[Eric Swartz - WA6HHQ]

Bob - What does this correlate to in NF?
e


Wayne Burdick wrote:

> 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" <[hidden email]
>  > 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 <[hidden email]> 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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