Posted by
David Gilbert on
May 04, 2009; 4:39pm
URL: http://elecraft.85.s1.nabble.com/K3-on-channel-strong-signal-overload-tp2785612p2788223.html
I don't think front end overload is your problem. I've had S9 + 45db
signals sound perfectly fine on my K3 with no audio distortion and no
off-frequency artifacts at all. I use the least amount of AGC possible
... AGC THR = 008 and AGC SLP = 000. The only way I've ever experienced
audio distortion is when I turn the AGC off.
On the other hand, K6LL and others have pointed out that the AF limiter
in the K3 kicks in a bit early even if it is set to the maximum of 30.
It's a pretty abrupt limiting action that can cause audio distortion,
and if you have yours set lower than 30 you'd probably hear problems
with even weaker signals.
Also, are you using a speaker, either an external one or the one in the
K3? You could be getting mechanical resonances on strong signals if you
are.
73,
Dave AB7E
WILLIS COOKE wrote:
> I have had some similar observations on ten meters. After reading your report I am inclined to agree with you. I have a station about 5 miles away who I contact on a regular basis on 10 meters, both SSB and CW. He is usually very distorted here and I have not been able to understand because others on the net do not seem to observe the distortion. I have also heard a few stations with strong skip that seem the same way. I have not tried a different antenna, but turning off the pre-amp helps some and engaging the attenuator helps even more.
>
> It makes sense to me that the front end overload clipping is activating and distorting the signal. It may not be such a problem now that I think I understand what is going on.
>
> Willis 'Cookie' Cooke
> K5EWJ
>
>
> --- On Sun, 5/3/09, orbarrett <
[hidden email]> wrote:
>
>
>> From: orbarrett <
[hidden email]>
>> Subject: [Elecraft] K3 on-channel strong signal overload?
>> To:
[hidden email]
>> Date: Sunday, May 3, 2009, 9:39 PM
>> Hello all,
>>
>> I just finished operating my K3 from my friend's
>> driveway using a portable
>> dipole on 60M, and wanted to inquire about some incoming
>> signal overload
>> that cropped up. I was joined while ragchewing with some
>> friends on 5371.5
>>
>
>
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