[Elecraft] K3: Sherwood Receiver Test Data question

[Wayne Burdick]

Dick,

The "sensitivity" number is incorrect because the K3 Rob tested didn't have its S-meter and AGC calibrated. He's going to re-test this after the unit is calibrated. We tested a few K3s with new synths in our lab, and all of them had sensitivity very close to the first K3 Rob tested.

On the contrary, the new synth reduces noise considerably over the old (as much as 20 dB lower noise at a 2-kHz offset), which only benefit all measurements.

73,
Wayne
N6KR


On Mar 4, 2015, at 8:56 PM, Dick via Elecraft <elecraft at mailman.qth.net> wrote:

> 
> Please advise if I am reading the new Sherwood receiver data  correctly:
> 
> 1) it shows a nice 6-8dB  improvement in 3rd order dynamic range after 
> adding the new  synthesizer? 
> 
> 2) it shows that the K3's sensitivity  has been greatly reduced from the 
> original 0.33 & 0.19 to 0.8  & 0.5  after the addition of the new synthesizer? 
> If this is  true, this would be bad news for weak signal 6 & 10-m.  
> reception.  
> 
> 73,
> Dick- K9OM
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