[Elecraft] K2: KDSP2 - Should I or Shouldn't I?

[Bob Nielsen]

The nice thing about the KDSP2 is that you can tailor the settings to do different things when required.  I have had good luck reducing atmospheric and similar wideband noise, effectively lowering the noise floor (sometimes to the point where, in the lack of a received signal,  you can hardly tell if the radio is on.  I also have the KNB2, which acts on different noise types than the KDSP2.

Bob, N7XY

On Mar 10, 2012, at 5:23 PM, Hisashi T Fujinaka wrote:

> I bought one used a few years ago and never installed it until I dug my
> radio out of a box and put an antennna back up. I played with them in
> the past and thought they made things sound funny.
> 
> However, I also got a new heat pump that puts all sorts of funny noises
> on 15M. I switched on the DSP and it shoved the funny noises into the
> noise floor which is higher, but much easier to listen to than the goofy
> motor noises.
> 
> But I think someone else pointed out that you don't want to use it for
> digital modes.
> 
> On Sat, 10 Mar 2012, Jon Perelstein wrote:
> 
>> The area I live in has gotten much noisier (QRN) over the past few years
>> and it's killing me.  I know that there are stations I want out there -- I
>> can kinda sorta hear them but I can't hear them over the noise well enough
>> to have a QSO.  As much as possible I've checked everything in the house
>> and the local telephone poles and one of my neighbors was even kind enough
>> to replace the circulator motor in his Koi pond, but the noise level is
>> still pretty bad.  I mostly operate digital modes on 80-10 (PSK, RTTY,
>> Olivia, etc.) with a fair amount of CW and the occasion sideband QSO.
>> 
>> My K2 does not have the KDSP2 (or the KAF2) and the noise level drives me
>> nuts.  My FT-897 does have DSP, and the problem isn't as bad as on the K2,
>> but the effectiveness of the 897's DSP seems limited, especially on digital
>> modes.
>> 
>> Is it worth building a KDSP2 or not?  Those of you who have one what do you
>> think of it.  I've listened to the sample on the KDSP2 page (
>> http://www.elecraft.com/KDSP2/kdsp2.htm) and it sounds impressive, but what
>> are people finding in real life?    Recommendations?  Thumbs up or thumbs
>> down?
>> 
>> Thanks and 73s
>> Jon
>> WB2RYV
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> 
> -- 
> Hisashi T Fujinaka - htodd at twofifty.com
> BSEE(6/86) + BSChem(3/95) + BAEnglish(8/95) + MSCS(8/03) + $2.50 = latte
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