KX3 -Diminished volume with Auto Notch

[Mike Lichtman]

    When using the auto notch, I find a diminished volume. Anyone else noticing this? 73 Mike KF6KXG
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[k6dgw]

On 2/15/2014 5:54 PM, Mike Lichtman wrote:
> When using the auto notch, I find a diminished volume. Anyone else
> noticing this? 73 Mike KF6KXG

I don't have a KX3, but when I use the notch on my K3, the overall audio
volume decreases ... as it should.  My hearing aids will automatically
notch out the siren of a fire truck going by, and things get fairly
quiet for a short time [can't copy CW on a speaker with my hearing aids,
they think it's a fire truck :-)].  The notch does have a non-zero
bandwidth of course and it will take out some noise around the center
frequency and thus things may sound quieter.

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2014 Cal QSO Party 4-5 Oct 2014
- www.cqp.org

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[dk9nl]

Mike Lichtman wrote

When using the auto notch, I find a diminished volume. Anyone else noticing this? 73 Mike KF6KXG

Yes, the same here! When auto notch on, regardless of whether beat cancelling or not, I have to increase the audio gain by about 10 steps to get the same audio level (using earphones) as before. And the SSB signal sounds a little bit distorted then. Turning off the auto notch I have to decrease the volume very quick before the audio comes back in full blast.
On my Kenwood TS-590 you do not notice any change of volume. This means "auto notch" technology does not necessarily result in lower volume or distortion.

73, Hans   DK9NL

[Don Wilhelm-4]

Hans,

Addressing the distortion only - if one places a notch in the audio
response, that will create distortion.  How bad it is will depend on the
frequency of the notch, its width and depth.

73,
Don W3FPR

On 5/18/2015 10:56 AM, dk9nl wrote:
> And the SSB signal sounds a little bit distorted then. Turning off the
> auto notch I have to decrease the volume very quick before the audio
> comes back in full blast.

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