[Elecraft] K3 Questions and gripes

[Guy Olinger K2AV]

Second what Joe said...

On Tue, Dec 14, 2010 at 12:27 PM, Joe Subich, W4TV <lists at subich.com> wrote:
>
>  > If you have the 6-kHz filter installed, you can increase the
>  > effectiveness of the DSP NB with some kinds of noise in SSB mode; just
>  > set WIDTH above 2.8 kHz so this wider filter will be selected.
>
> Or modify your configuration so the wider roofing filter is always
> selected in SSB <G>.
>
> Wayne, this is a place the XFIL button could be made more useful ...
> allow it to select the roofing filter independent of the "Width"
> (DSP) setting.
>
> 73,
>
>    ... Joe, W4TV
>
>
> On 12/14/2010 12:12 PM, Wayne Burdick wrote:
>> Scott,
>>
>> On Dec 14, 2010, at 8:28 AM, Scott Ellington wrote:
>>
>>> The K3 noise blanker bandpass filter appears to have a bandwidth of
>>> about 400 kHz....
>>
>>> I'm just guessing, but it seems Elecraft took a different approach
>>> in using the very wide bandwidth.  This increases the peak amplitude
>>> of the noise pulses, allowing them to be detected at a higher
>>> threshold while, under crowded band conditions, the strongest signal
>>> remains about the same....
>>
>> Exactly.
>>
>> If you need a narrow-band blanker, use the DSP NB. It is very
>> effective on a wide range of noise types, and is post-crystal filter.
>>
>> If you have the 6-kHz filter installed, you can increase the
>> effectiveness of the DSP NB with some kinds of noise in SSB mode; just
>> set WIDTH above 2.8 kHz so this wider filter will be selected.
>>
>> Wayne
>>
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft at mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>