Hi Alberto and LF-group,
Very good signals from CT1DRP and G3AQC, this latter
using DFCW....
http://www.qsl.net/i2phd/argo/drpaqc.html
Look for third faint trace in the image, 0.2 Hz above Laurie's HF dashes :-)
Re DFCW timing:
Usually, I try to roughly synchronize my QRSS / DFCW transmissions to a
raster of dot-periods in a minute. Its easy to do that manually, I simply
look at the DCF77-controlled clock on the wall and hit the Return-key at any
integer multiple of 6s / 8s.
CW dash/dot ratio:
A classic 3-to-1 ratio may not be as efficient as 2-to-1, but it has an
interesting property: All possible rising edges are locked to a fixed
two-dot-raster, with an interleaved second raster for the falling edges. This
might help a receiver to synchronize, and also contribute to the typical
rythmic sound.
73, have fun
Markus, DF6NM
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