Hi Jaak,
Great idea to start a long test of Contestia 250/4!
Perhaps Contestia 250/8 can also be compared in actual practice to
Contestia 250/4. Contestia 250/8 is slower (at 29 wpm), but decodes 2 dB
deeper into the noise, which may be important when there is QSB (fading)
and the signal is already near the noise level ( such as when the band
is going out). Although I can type over 50 wpm, my personal feeling is
that 29 wpm is fast enough for a QSO, but Contestia at 78 wpm (3 dB less
sensitive) is more reasonable for passing traffic (if conditions can
support 3 dB less sensitivity). If not, then to be able to pass the
traffic at all, it has to be sent at a slower, more sensitive speed,
such as Contestia 250/4.
It all depends upon the average individual preference for typing speed
for QSO's vs conditions.This may become clear during your tests. I hope
the testers will make their minimum typing speed preferences known, as
well as how well the mode works.
73, Skip KH6TY
Jaak Hohensee wrote:
Hi everybody
* Contestia derived from Olivia.
* Contestia 250/4 is channelfree like psk or rtty. BW less than
rtty and same as psk125, 39wpm, snr -9dB.
* So Contestia 250/4 is good narrowband alternative for psk31 or
rtty folk, specially when propagtion is not for psk/rtty or
signals are too weak.
* Contestia 250/4 is good mode for mid- or high-latitude folk.
Many times there are disturbed propagation path not suited for
psk or rtty.
* Concept testing period to the end of year 2010. Everybody is
welcome.
More info contestia.blogspot.com <http://contestia.blogspot.com/>
--
vy73, Jaak
es1hj
