Re: [Elecraft] Fwd: KDSP2

2009-07-29 Thread .k8dd.
richard gilley wrote:
> Thank you all for your input.  Your vote was 4 to 3 in favor.
> More importantly the additional information you all provided is very  
> helpful.
> 73
> Dick
> AD1G


Make it 5 to 3 in favor!
If I ever get the second K2, which may happen soon, it will definitely 
have a KDSP2.  It really makes a difference on 160 and 80 CW!

72  73HankK8DD
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Re: [Elecraft] Fwd: KDSP2

2009-07-29 Thread Ron D'Eau Claire
I don't know how you interpret 4 to 3 Dick, but I'd call it a
'non-decision'. That's how it's been among the user comments since the KDSP2
was introduced several years ago. 

For some it's great. For others it's unnecessary. 

>From what I can make out reading the posts over the past years, it depends
upon the needs of the operator for comfortable copy.

Some have a hard time copying anything that isn't as "clean" as a code
practice oscillator in a quiet room. QRM and QRN are distractions that can
seriously interfere with copy. For them the KDSP2 makes operating enjoyable,
perhaps even possible, under more conditions. 

Others, and I include myself in this group, certainly do not mind a clean
signal on a quiet QRM/N free band, but we'd much rather hear any stations
near the frequency and don't mind copying CW in the noise as long as it's
not too deep down below the noise level. For that reason we often use wider
bandwidth I.F. filters and forego any further signal processing wherever
possible. Sure, there are times when filtering is the only thing that's
going to suppress high level QRM too close to a weak signal, but I've always
found the I.F. filters in the K2 do that very well. 

For high-level impulse QRN, the KNB2 does an excellent job. 

Ron AC7AC

-Original Message-
Thank you all for your input.  Your vote was 4 to 3 in favor.
More importantly the additional information you all provided is very  
helpful.
73
Dick
AD1G


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Re: [Elecraft] Fwd: KDSP2

2009-07-29 Thread Lyle Johnson
I might as well weigh in, too :-)

Disclaimer: I have a pecuniary interest in the KDSP2!

One nice feature of the KDSP2 is if you set the bandwidth of the K2 to 
wide, and tune to an area of a band that is normally active when there 
is activity at all.

The NR function then acts like a smart squelch.  If the band is dead, 
you hear nominal silence.  If a signal comes up anywhere in the 
passband, the NR will build a filter around it and you'll hear it.

In these days of low sunspot activity, this can be a great way to 
monitor for a band opening without staring at a computer screen, or 
listening to fatiguing band noise.

73,

Lyle KK7P

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