[Elecraft] K3 contest passband

[David Gilbert]

Everyone's ears are different, but I used a DSP passband of 1.1 KHz for 
most of the 2,200 QSOs I made in the 2009 CQ WPX SSB contest (roofing 
filter was 8-pole 1.5 KHz).  I don't remember how far I had to shift the 
center frequency, but I think it was down to about 0.85 or 0.90 KHz.  It 
definitely helped, but if the splatter is inside your passband (and 
unfortunately much of it is) nothing will make a significant difference 
other than maybe taking the time to tell the guy above or below you that 
he has a dirty signal (which I did twice) and hope that he backs off the 
gain or compression (which happened once).

73,
Dave   AB7E




Andrew Faber wrote:
> Dave's suggestions are good ones, but having used a K3 for over 6,000 Qs in 
> ARRL Phone from P49Y, I can say that they only go so far.  You will still 
> get splatter from close stations.  The K3 is excellent at not creating 
> digital artifacts due to nearby signals, but unfortunately a lot of the 
> splatter you hear from nearby stations in a phone contest really is in your 
> radio passband, and can't be eliminated by any setting of the controls on a 
> K3 or any other radio.
>  Note, it's also possible to run the DSP at a width as narrow a 1.6 kHz or 
> so in extreme circumstances. Also consider backing off the RF gain at times.
>   GL and 73, Andy, AE6Y.
>   
> ----- Original Message ----- 
> From: "Dave Hachadorian" <K6LL at ARRL.net>
> To: "Elecraft Reflector" <elecraft at mailman.qth.net>; "Manuel Pareja" 
> <manolo.ea7ll at gmail.com>
> Sent: Tuesday, October 20, 2009 1:07 PM
> Subject: Re: [Elecraft] contest
>
>
>   
>> Preamp OFF, except on 10 and 15 meters.
>> Attenuator ON for 40, 80, 160 meters.
>> NB, NR OFF
>> High cut = 2.05
>>
>> Dave Hachadorian, K6LL
>> Yuma, AZ
>>
>>
>> ----- Original Message ----- 
>> From: "Manuel Pareja" <manolo.ea7ll at gmail.com>
>> To: <Elecraft at mailman.qth.net>
>> Sent: Tuesday, October 20, 2009 7:48 PM
>> Subject: [Elecraft] contest
>>
>>
>>     
>>> Hi,
>>>
>>> Any advise about operating skills for the next weekend
>>> overcrowded band's?
>>> how do you avoid splatters from very close station?
>>>
>>> 73 de Manolo EA7LL