Re: Lessons Learned
Dave Kjellquist, WB5NHL
I find the comments about QRP PSK interesting
particularly from people with outdoor antennas and
even beams. Try a real challenge that Steve (W3HF) and
I live with -- attic antennas. My goal, watch out for
the next one Steve, is to beat W3HF.
73 Dave WB5NHL (Always 5 watts or less)
---- email@example.com wrote:
I find it interesting all the comments made aboutQRPers. Both Jay
and Bernie tried it out this contest. Bernie evenmade a comment
about gaining some more understanding of (respectfor?) what the
QRPers have to put up with.for the survey,
so there's still time for those of you who have notsent yours in.
But I do notice a trend with regard to the questionon QRP operation.
About half of the respondents have tried running PSKQRP. But I think
only one of the respondents runs QRP "most" of thetime, and I know
there's only one who runs QRP all of the time. Youcan guess who that
is. :-)though I did find two
signals on 40. Never tried 6m, though--the onlyantenna for 6 I have
is the 817's rubber duck.wondering if any braveI have worked aurora on cw before and was
PSK at high(foolhearted?) souls have thought to try aurora on
computer couldn'tpower? (Don't tear me up to bad on this one folks.)
strange type ofmake heads nor tails of. It looked like some
letters shouldencryption. I kept getting weird characters where
wired digitalhave been. Kind of like wrong parity causes on
question. Thecomms.No tearing here, Jay. I think you answered your own
problem with aurora is that I believe there issignificant phase
distortion in that propagation. The P in PSK standsfor phase, as it
is the phase of the signal that carries theinformation. So
distortion of the phase will destroy the informationin the signal
regardless of the power level.that carry
information in the amplitude of the signal, like CWand SSB. Anything
with a phase component (PSK, or FM) will bedistorted, often to
unusability. As for the digital modes, maybe MFSK16would work. It
would certainly be better than PSK, as that too isan amplitude-based
signal.when he said that
there were many signals he could see, and were loud,but could not be
decoded. The phase of the signal was shifting fasterthan the
receiver could track it, so the bits were beingdemodulated in error.
This caused the conversion from bits to letters tobe erroneous. And
this is just like the parity error problem youcompared it to.
on your computer?
If the signal is clean and loud, it should be astraight vertical
line. A clean but weaker signal will still bevertical, but just not
as long. If there is distortion, or too much noise,you will start
seeing lines at other angles--these are bits thatare being
demodulated that are not perfectly clean. The moreof those you see,
the more likely you are to see errors in reception.here on 5 watts.Props stunk! I can usually work lots of EU from
Not thisManaged to get Nicktime! Only 2 EU's I heard were DL2AYL and UX0FF.Agreed. I never heard Erika, though, on any band.
UX0FF once, and did get one EA and one CT. Butnothing else from
central or North Europe.http://docs.yahoo.com/info/terms/