[RTTY] Contester preference - 1- versus 2-decimal-place spots

[Tim Shoppa]

Pete, I have thought about your question from the running standpoint, and I
think I saw fewer off-frequency callers while I was running in CQ WW RTTY
than I have had in the past.

It is likely that the credit goes to more precise and accurate RTTY skimmer
spots (what you call "2 decimal place spots").

But beyond just more significant digit, there were substantially smaller
systematic and random offsets in skimmer frequencies, than in past major
RTTY contests. Maybe this is as simple as GPS-locked skimmers, but I think
it's beyond that, that the skimmer author has worked with folks who run the
skimmers to systematically calibrate all the results.

One thing I did notice, was that for callers that were only slightly off
frequency (say 20-50Hz), 2Tone AFC always did the "right thing". I believe
I also observed that GRITTY in "jackrabbit mode" seemed to be able to
back-decode (into the past) to some extent and that helped with callers who
were off frequency by up to a few hundred Hz.

Tim N3QE