[Elecraft] Do I need to upgrade my QRP-K2/ Clean Signals...

Wed Feb 25 23:09:01 2004

Hi Earl and all,

Well, I'm going to order the mod kit for my K2 and compare it to Don NK6A's
unmodified K2 on Ernie N6HY's IC-756 Pro 2 and see if we can hear the
difference. I'm not trying to be argumentative about this, I really have
never gotten any negative feedback on my signal. During the FOX Hunts Don
and I are usually within a few hundred Hz of each other, and it hasn't been
a problem. BUT, I sure don't want to take up any more bandwidth than needed.
I did read the manual, and  looked at the scope pics. After which I looked
at my CW TX envelope on the scope and it was about a 3mS rise and a 2mS fall
time.

Now, one question I have is what is the impact when running QRP? Is it going
to be harder for me to get a signal through or since it's a narrower
bandwidth, is it going to be a more efficient punchy signal? Wonder if any
of you have comments on this...

73's Trev - KG6CYN
http://www.qsl.net/kg6cyn
----- Original Message ----- 
From: "Earl W Cunningham" <[email protected]>
To: <[email protected]>; <[email protected]>
Sent: Tuesday, February 24, 2004 1:29 PM
Subject: Re: [Elecraft] Do I need to upgrade my QRP-K2/ Clean Signals...

> Trev, KG6CYN wrote:
>
> "I gotta say, that if there are clicks in my signal, then they are WAY
> down.  Don NK6A lives a few blocks from me, and we both run our K2's at 5
> watts during contests. We can often hear each other on 40 meters during
> the QRP-L Fox Hunt, but I've never noticed any clicks from his signal or
> he from mine..."
> ==========
> Rest assured that the CW bandwidth of the stock K2 typically extends
> +/-1.5 kHz from center, otherwise Elecraft would not have designed the
> mod.  To hear them, use a narrow CW filter and listen to the transmitted
> signal just outside the passband of the filter.
>
> Clicks are most frequently encountered during CW contests when the band
> is very crowded and signals are bunched up closely adjacent to each
> other.
>
> As I said before, "Let your conscience be your guide."
>
> 73, de Earl, K6SE
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