[Elecraft] KNB3 and my noise blanker issue

[Mike Smith VE9AA]

It flashes once I stop transmitting (even at 0.1watt output, 0.0w output, or
in TEST mode)..........and continues to flash forever.(in receive)

Mike, Coreen & Corey
Keswick Ridge, NB


-----Original Message-----
From: Don Wilhelm [mailto:donwilh at embarqmail.com] 
Sent: May 15, 2016 8:37 PM
To: Mike Smith VE9AA
Subject: Re: KNB3 and my noise blanker issue

Mike,

I don't think the flashing on TX is of any consequence.  The NB only works
in receive.
Try the various settings.  If the particular fence controller has a long
rise time, the NB will not fire on it.

NR may work, but for me, I don't like to use it because it distorts the
signal.  Noise reduction looks for what it "thinks is a coorelated signal
and builds a filter around it.  It takes a bit of time to build that filter.
It works better on CW than it does on SSB IMHO.

73,
Don W3FPR

On 5/15/2016 6:01 PM, Mike Smith VE9AA wrote:
> Don,
>
> Thanks.  Electric fence popping from very closeby.  For the moment, I 
> can't eliminate it at the source (long story).
>
> The IF NB appears really to do nothing whatsoever. Also, as soon as I 
> transmit, the light (well, not light, but the letters "NB" flashes, 
> regardless of any other settings on the rig whatsoever.
>
> Very strange !
>
> Mike, Coreen & Corey
> Keswick Ridge, NB
>
>
> -----Original Message-----
> From: Don Wilhelm [mailto:donwilh at embarqmail.com]
> Sent: May 15, 2016 6:18 PM
> To: Mike Smith VE9AA; elecraft at mailman.qth.net
> Subject: Re: [Elecraft] KNB3 and my noise blanker issue
>
> Mike,
>
> The KNB3 menu item was removed with MCU firmware 5.20 (see the release 
> notes).
>
> The K3 will not operate without the KNB3, so there is no need for a 
> menu entry.
>
> What kind of noise are you trying to eliminate?  The NB only works on 
> impulse type noise such as may be experienced from automotive ignition 
> noise or electric fence noise.
> If you are expecting it to remove local 'hum' from neighbors 
> electronic devices or atmospheric noise, it will not be effective.  
> Use the NR function for that type of noise.
>
> 73,
> Don W3FPR
>
>
> On 5/15/2016 4:14 PM, Mike Smith VE9AA wrote:
>> Going through all the menus today (after upgrading to the latest 
>> firmware)
> I
>> do not see the KNB3 option in my menu system?!
>>
>> Is that (maybe) why my IF noise blanker is not working? The board is
> either:
>> Gone
>> unhooked
>> damaged
>> Ideas?/Comments?
>>
>