[Elecraft] K3 NR

[Brett Howard]

Another thing that I've heard asked for a few times that I'd
appreciate is the ability to hear the signal while adjusting pitch
rather than a solid tone. I know that if the user had no signal tuned
that they be adjusting somewhat blind. However the band noise will
still have a different sound based on the pitch selected.

As far as the shift you're mentioning are you talking about the fact
that the FC star moves to the freq that you have pitch configured for?
 The filter is still centered in the IF land but it looks like a shift
because the K3 tells you about its filters in AF terms.

BTH

On 8/26/09, Bill W4ZV <btippett at alum.mit.edu> wrote:
>
>
>
> P.B. Christensen wrote:
>> Until I purchased
>> the '7800 back in 2005, the only other radio I've owned that would produce
>>
>> ultra-low-pitch CW was the TS-870 but I never bothered trying low pitch CW
>>
>> reception until I tried it with the Icom.
>>
>
> The TS-930S had an infinitely variable PITCH control which went down to zero
> (and maybe even beyond to negative IF since it was analog).  It
> simultaneously adjusted sidetone, filter center and TX offset so you were
> always zero beat if you matched the sidetone to the signal.  It was easy to
> tune in a weak signal and then adjust PITCH for the optimum S/N for your
> ears.  This is how I discovered my ears liked the 240-270 Hz range.  Orion
> also allows setting PITCH as low as 200 Hz but I never used settings that
> low based on my experience with the 930.  I still have my 930 and may have
> to drag it out to see what 50 Hz sounds like, but that sounds awfully low
> based on my previous experience.
>
> I still don't understand why the K3 limits us to 300 Hz PITCH when Orion
> (which has a very similar block diagram) goes to 200 Hz.  Ten-Tec changed
> their original lower limit of 300 Hz to 200 Hz within a month of my request
> to lower it...and they also keep their crystal filters centered instead of
> shifting them at lower PITCH settings (as the K3 does), so the radios
> apparently have some differences that are not obvious to me.
>
> 73,  Bill
>
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