[Elecraft] K3: Sherwood Receiver Test Data question

[Gary Smith]

Joe,

You will be a happy guy with the new K3. Mine is 6 years old but has 
all the upgrades done here & at the factory so it's the same radio as 
yours, and the new K3 is incredible. If you don't have the sub 
receiver, plan on putting that in, diversity is a hoot.

73,

Gary
KA1J


> I can't speak to what the old was like.   I just got my K3 built a few days ago and it is brand new with the new board.
> 
> I had a Flex-5000a and a 6300 I have access too.   I am an avid DXer with very marginal antennas.   Last night in the CWT, I hit my highest rate ever and I am blown away with this receiver.   The sound and feel is incredible.   I have never had a radio this good.  It is hard to.describe, but it is amazing.
> 
> 73 to all,
> 
> Joe
> 
> 
> -------- Original message --------
> From: Wayne Burdick <n6kr at elecraft.com>
> Date: 03/04/2015 11:46 PM (GMT-06:00)
> To: RLVZ at aol.com
> Cc: elecraft at mailman.qth.net
> Subject: Re: [Elecraft] K3: Sherwood Receiver Test Data question
> 
> 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><mailto: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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