[Elecraft] [K3] QRQ/CW+ and split

[Andrew Moore]

> Is the plan to eventually implement normal split with CW+....?

Wayne mentioned in the release notes for 3.99 firmware: "In a subsequent
firmware release, RIT/XIT will be usable over a small range in QRQ mode."

> To use SO2V in N1MM with the K3 requires using normal SPLIT. It would be a
pity not to be able to take advantage of the greatly improved keying with
CW+ at the higher speeds used in contesting.

CW+ mode benefits begin at farily high speeds (I'm not sure what the
threshold is).  I'm not a contester but from what I hear, even with typical
speeds of contest reports, you'll be fine in regular CW mode.  Use the CW+
mode when you want to fly at say  60+ (again don't quote me on that cutoff
speed).

--Andrew
..


On Thu, Jun 24, 2010 at 7:24 AM, Guy Olinger K2AV <olinger at bellsouth.net>wrote:

> At 35 WPM, I do not perceive any change in transmitted keying between
> CW and CW+.  There is a difference in QSK receive.  I certainly do not
> hear anything that would be described by "greatly improved keying" on
> the transmitted waveform.  Perhaps the circumstances of your keying
> complaint needs further detailing?
>
> Part of the issue with split, RIT, XIT, etc., is settling time for the
> complete reversal of most of the circuitry paths involved in TX/RX
> state change. CW+ removes the most time-costly state change reversals
> to accomplish the 70 WPM clarity.  We need to remember that the change
> as currently implemented was introduced to service very high speed
> QRQ.  Working some of this backward to mid-speed QSK code without
> introducing chirp and other artifacts will likely take some time.  The
> lack of split in the reintroduce list for CW+ was deliberate and
> probably marks split as the most difficult item for quick transition.
>
> What seems more workable is pulling some of the CW+ code back into CW
> to improve the QSK there.  Also, perhaps the K3 SO2V coding strategy
> used by N1MM bears rethinking in light of the CW+ changes.
>
> 73, Guy.
>
> On Thu, Jun 24, 2010 at 4:13 AM, GW0ETF <gw0etf at btinternet.com> wrote:
>
> > To use SO2V in N1MM with the K3 requires using normal SPLIT. It would be
> a
> > pity not to be able to take advantage of the greatly improved keying with
> > CW+ at the higher speeds used in contesting.
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