[Elecraft] Weird EMI issue... part deux

[Jan Erik Holm]

I have the same. Also on a number of other places between 0.5 - 30 MHz.
Was there any response from Elecraft on this?

/ SM2EKM
------------
N2TK wrote:
> James,
> I am getting a much lower level of noise than you. With no antenna and the
> preamp off, the first bar on the S-meter barely flickers. When I spin the
> dial quickly I can get as high as S3 noise. The noise disappears below 4.930
> and above 5.110.
> 
> I only hear the noise in the main receiver. I can spin the dial on the
> sub-receiver, if turned on and also hear the noise in the main receiver.
> There is never noise in the sub-receiver. With a dummy load on ANT 1, ANT 2,
> AUX and RCV inputs there is noise in the main receiver when spinning the
> dial with any antenna port selected.
> 
> Once I have an antenna hooked up and the background noise is at least S3 on
> that antenna port I can't hear the noise when spinning the dial.
> 
> 
> Yes, you can forward this info to whomever you want.
> 
> 73,
> N2TK/NP2, Tony 
> 
> 
> 
> -----Original Message-----
> From: James Sarte [mailto:kc2uee at gmail.com] 
> Sent: Sunday, March 01, 2009 10:06 PM
> To: 'N2TK'
> Cc: elecraft at mailman.qth.net
> Subject: RE: [Elecraft] Weird EMI issue... part deux
> 
> Hi Tony,
> 
> Thanks for taking the time to do that test for me.
> 
> I do hear the noise with an antenna connected, but the antenna is not tuned
> for 5MHz so the noise floor is pretty low.  I do not hear this noise through
> the sub receiver if I use the AUX BNC connector, but I will hear it through
> the sub receiver if it's using the same antenna as the main receiver.
> 
> Otherwise, everything else you've described is what I'm experiencing.  This
> noise is around an S5 to maybe S7 on the meter when I move the VFO knob.
> 
> As you also discovered, turning the preamp on raises the noise floor masking
> most of the EMI.  It's not very noticeable when the preamp is on.
> 
> Would it be OK to forward this email to Elecraft tech support?  I've been
> maintaining a running dialogue with them regarding this issue, and your
> findings may help them to develop a solution.
> 
> Thanks again and 73,
> James KC2UEE
> 
> 
> 
> -----Original Message-----
> From: N2TK [mailto:tony.kaz at verizon.net] 
> Sent: Sunday, March 01, 2009 8:32 PM
> To: 'amstel78'
> Cc: elecraft at mailman.qth.net
> Subject: RE: [Elecraft] Weird EMI issue... part deux
> 
> I was using SSB settings and had an antenna hooked up. I did not hear any
> noise
> 
> I put a dummy load on the antenna jack and used AM mode. I can hear noise as
> I turn the dial. I can just barely hear the noise when I turn on the preamp.
> And with any antenna hooked up I do not hear any noise at all as I turn the
> dial. 
> 
> Jim, do you hear this noise with an antenna hooked up? I do not, so as far
> as I am concerned it does not exist. However if you hear this noise when you
> have an antenna hooked up you need to talk some more to Elecraft support.
> 
> 73,
> N2TK/NP2, Tony 
> 
> 
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