[Elecraft] K3 audio files

[Hector Padron]

I will like to help to this very insteresting discussion about noisy K3 but I need some one who volunteer a website where I could up load about 80MB of MP3 files that I have saved when recording SSB and CW stations in pileups,dx,ragchewing,with and without the antenna,with and without NR,etc that will show you how quite is my K3 receiver,so let me know where I can keep those audio files for you to download.
 
AD4C


"For a refined ham it is compulsory to own a k3"

--- On Fri, 12/18/09, Don Wilhelm <w3fpr at embarqmail.com> wrote:


From: Don Wilhelm <w3fpr at embarqmail.com>
Subject: Re: [Elecraft] K3 receiver noise questionable test results
To: "K2MK" <k2mk at comcast.net>
Cc: "Elecraft Reflector" <elecraft at mailman.qth.net>
Date: Friday, December 18, 2009, 2:01 PM


Mike,

That could easily happen if you have the AGC on.  That would be 
especially true if you have the preamp on when it is not needed and are 
running the RF Gain at its full setting.  With a signal present, the AGC 
is acting to keep the receiver gain low, but when the signal is no 
longer present, the receiver bounces back to full gain.

Try the same test with the AGC off and the preamp off (even with the 
attenuator on) and the RF Gain backed down so the no-signal noise with 
your vertical connected is just perceivable.  Then tune in a signal, 
note its strength and remove the antenna.  The noise level should be 
absent (unless you have the AF Gain set really high).  If you still get 
noise with no antenna, you have a receiver fault that needs attention.

73,
Don W3FPR

K2MK wrote:
> One test that I have performed leaves me scratching my head as to its 
> results. Maybe someone can enlighten me. I tune to a medium strength CW 
> signal and press my ANT button to switch between ANT 1 and ANT 2. I have 
> nothing connected to ANT 2. The signal disappears but the background noise 
> level remains the same.
>
> 73,
> Mike K2MK 
>   
>
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