[RTTY] WHY put CQ at the end?

[David Levine]

My own personal preference is to know who's calling CQ and when I'm S&P,
printing K7ZX KZ7X vs K7ZX KZ7X CQ means I can immediately send my call vs
wait either for the CQ station to call CQ again or for someone else to jump
in and wait for the entire exchange to complete. It helps out both the RUN
and S&P stations as far as I'm concerned.

I don't care so much about the RBN skimmer as I do my own ability to detect
who is calling on the frequency.

K2DSL - David


On Tue, Feb 17, 2015 at 12:18 PM, Dave Hachadorian <k6ll.dave at gmail.com>
wrote:

> Several times during the WPX RTTY contest, I was called on my CQ frequency
> by stations who thought I was someone else, someone I had worked in the
> previous few minutes.  Apparently a RTTY Skimmer had misunderstood who was
> actually running on the frequency and who was the S&P station.  I can see
> how this could easily happen, because I was ending my CQ message, and also
> my TU message, with a CQ.  Here’s an example:
> CQ WPX K7ZX KZ7X CQ
> W7WW W7WW
> W7WW 599 1025 1025 W7WW
> 599 945 945
> TU WK7S CQ
> AA5AU AA5AU
>
> So the skimmer hears
> CQ W7WW W7WW and thinks W7WW is running, and spots him on my frequency.
>
> Or, the skimmer hears
> CQ AA5AU AA5AU and thinks AA5AU is running, and spots him on my frequency.
>
> I know the skimmer guys have spent a lot of time working to reduce this
> error, but it is obviously still not perfect.
>
> The larger question that occurs to me, is “Why do RTTY ops put a CQ at the
> end?”  Nobody does this in CW or phone contests.  Now that RTTY skimmers
> have come of age, putting CQ at the end is causing identification issues.
> Maybe it’s time to stop?
>
> Dave Hachadorian, K6LL
> Yuma, AZ
>
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