The K3 has two noise blankers. Likely the image you are hearing is caused
by the IF noise blanker. If you turn that one off - and just use the DSP
one - you will likely find the image disappears.
Whenever possible - if you can deal with a noise just with the DSP blanker
- you will be less affected by strong signals that are outside the
bandwidth of the selected crystal filter.
Tree N6TR
On Tue, Dec 8, 2015 at 7:56 AM, Larry - K1UO <k1uo@tds.net> wrote:
> Hello all.. This AM on 160 meters there was a station CQing on 1.820.6
> with a fundamental freq signal strength of S9 on my K3. I also found (with
> the NB on) that I could hear him Q5 but very weak on 1.810.6 and the same S
> 0 reading but perfectly Q5 on 1.830.6. I turned the noise blanker off and
> of course the images disappeared. Is this a know problem when using the NB
> or is this just with my radio after a recent factory alignment? I have
> had a K3 for years and never noticed anything like that before but then
> again this AM was very quiet on 160M and I had the NB on because I could
> hear a distant tick tick of an electric fence.
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