[Elecraft] Noisy K3 receiver

[Bill K9YEQ]

Don, 

I tried your settings and wow.  I love the radio.  I am not sure it is
working well.  I am on 75 and what a difference.  I do have to turn up the
audio a bit because signals are fading, but at least the static noise from
the radio is greatly reduced and it does behave more like the venerable K2
which I still have and love.


73,

Bill
K9YEQ
K2 #35; KX1 #35; K3 #1744; mini mods
ATS-3B


-----Original Message-----
From: Don Wilhelm [mailto:w3fpr at embarqmail.com] 
Sent: Friday, December 18, 2009 5:09 PM
To: Bill K9YEQ
Cc: don at w3fpr.com; 'Arie Kleingeld PA3A'; 'Elecraft - K3'
Subject: Re: [Elecraft] Noisy K3 receiver

Yes, AGC can do that.  At all settings the AGC will do its job, but if 
the settings are agressive, when there is no strong signal, the receiver 
goes to full gain and any noise becomes loud - the K3 will try to make 
the noise as loud as the signal you were previously listening to.

I personally think the default AGC settings are too agressive, but that 
is only my opinion - I like my K2 AGC (despite Wayne's preference for 
the default settings).

73,
Don W3FPR

Bill K9YEQ wrote:
> Don & all,
>
> I was also besieged with noise.  I changed my settings which I acquired,
not
> sure because the memory is failing :-),  and tried your minimum
settings...
> my GOSH, a whole new world.  I will test further, but so far on a very
> "noisey" 75, the radio quited right down.  We forget about all the
internal
> settings.  I do not yet have the DsP upgrade but will once the 144m mod
> becomes available so there is only one entrance into the radio to
accomplish
> the upgrades.
>
>
> 73,
>
> Bill
> K9YEQ
> K2 #35; KX1 #35; K3 #1744; mini mods
> ATS-3B
>
>
> -----Original Message-----
> ........................................
> The only way I can get my K3 to have almmost as much noise with the 
> antenna removed as it has with the antenna connected is to set the AGC 
> Threshold to its minimum value (002).  My AGC Threshold is normally set 
> at 008.  As a side-point, I set my AGC SLP at 002 because that produces 
> a response similar to that of the K2 which I liked - weak signals sound 
> weaker, strong signals stronger and I can judge that without reference 
> to the S-meter.
>
> If you wish to try some other tests, let me know and I will try to help.
>
> 73,
> Don W3FPR
>
>
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