Am
22.12.2014 17:17, schrieb Guyé André:
[...]
I agree with you, Mal. For DX, the Propagation on both MF
BANDS 160 and 630 meters similar. The only diference is the ERP power, because
on 630 m the standard ham antennas have not 100 % of efficiency,
HI.
Propagation on both MF BANDS similar
de MAL/G3KEV
Never ever! I saw regular
WSPR decodes with 2W TX power (if it is true!) on 160m between EU and VK. No
chance on 630m except some very very very very very very very very very
very very very very very very very very very very very very very very very very
very very very very very very rare events like prooved by F6CNI :-)
I've put
out several 10000 WSPR sequences now, with decent power. Best distances were to
the US east coast, TF, EA, upper LA and near Moscow. Not a single one above
2500km over land.
And most amateur antennas are not 100% efficient on 160m as
well. But 1W ERP is possible on MF for most i assume. In more than 2 years we
saw now that WSPR from EU does not propagate farer than 2000 km, except some TA
detections, i.e. mostly water on the path. However it is a challenge to leave
detections in 2000 km over land. And Japan is about 9000 km over land, from
here, or France or UK.
So let's hope for the very rare events. Better try LF
instead, no choke :-)
73, Stefan
