To me, the issue comes down to contained
or not contained when it comes to signals
on the bands. We're already contained by
the limits of the band itself so there's
effectively a finite space for everyone
and if FT8 or RTTY or XYZ wanted to and
was allowed to be everywhere, the QRM
would be
http://www.iaru-r1.org/index.php/downloads/func-startdown/718/
IARU Region 1 160m Band plan:
1810 - 1838 200 CW,1836 kHz – QRP Centre of Activity
1838 - 1840 500 Narrow band modes
1840 - 1843 2700 All modes – digimodes, (*)
1843 - 2000 2700 All modes, (*)
There's no exclusive frequency for FT8
My WSTJ waterfall shows about 50Hz bandwidth for ft8 signals. In "band
plan" theory the ft8 segment is 1840 to 1842.5. However, many rigs
won't pass audio much below 300Hz and may not above 2.5KHz. I run "wide
open" DSP on my Pro3 so see to 3Khz. Above 2.6Khz there are few ft8
signals to
The normal bandwidth for FT8 is 2.5 to 2.8 kc. at 1.842.9 you should
have been outside the FT8 band. Hardly anyone operates above 2.5 it
seems anyway. I think you were essentially being trolled. I suppose
you could have been pretty wide for a local or close in station wiping
out a fair
As a practical matter there are several 2 kHZ segments of each band that are
now devoted to 24x7 JT65, FT8, and other digital modes. Weak signal CW work -
eg working rare mults or even just weak guys from common mults - in those
segments just isn’t gonna happen.
Substantial parts of 80M and
As we all know, CQWW produces huge activity on all HF bands. This year I was
hearing stations up to well above 1850kHz. I have found that trying to run
Europe is often more productive in the 1840-1850 segment, presumably because it
is less crowded than lower in frequency.
Late in the contest
