Re: Topband: K3 Noise Blanker problem?

[K4OWR]

 This is a normal happening with most noise blankers and strong 
signals. I'm surprised that you have never experienced this before. I 
run into this all the time when stations using their noise blanker hear 
my signal very strong and complain that my signal is in several places. 
I advise them to temporarily turn off the blanker and the problem will 
go away. If your blanker is variable, try turning it down; or better yet 
avoid using it and rcve on your Beverageif you have one.

BILL K4OWR

On 12/8/2015 10:56 AM, Larry - K1UO 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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Re: Topband: K3 Noise Blanker problem?

[Tree]

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  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.
> _
> Topband Reflector Archives - http://www.contesting.com/_topband
>
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Topband: K3 Noise Blanker problem?

[Larry - K1UO]

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.
_
Topband Reflector Archives - http://www.contesting.com/_topband