Hi all, there was quite a lot of activity this weekendand it seems there
were some new stations to be 'winkled out'. I am particularly interested in
the proagation conditions this weekend. Mal posted to say that it was good
on Saturday. There was a small (M2.0) X ray flare at about 1100z which
lasted for a few minutes, but I did not see an correlation in the strength
enhancement of DCF39 on Brian's plot for Saturday morning. However there was
possibly another effect active.
We have noticed that after a geomagnetic storm, which injects ions into the
ionosphere, it is often possible to hear CFH (when active) in daytime. John
VE1ZJ has reported DCF39 being enhanced in daytime also during these events.
This effect last for the majority of the daylight hours not just a short
period as with an X-ray flare enhancement, where the signal profile closely
follows the X-ray flux profile. The level of this daytime enhancement never
reaches the normal night-time levels. However conversly the nightime
signals are much reduced in strength from normal at this time.
I had not seriously considered the possibility of shorter distance effects
though I have discussed it with Steve GW4ALG. Brian's Saturday 29th morning
plot for DCF39 shows a distictly higher level than normal (6 to 10 DB) with
a strange sharp fade at one point ( there are normally no fades of this kind
on the daytime plot). The night-time signal is about 10dB below average. It
would seem that the ion injection during a magnetic storm can produce useful
daytime signal enhacements at inter European distances due to daytime
'skywave' (say single hop). This occurs not less than three days and more
usually 4 days after a storm (shown by a Kp index or 5 or above). The effect
can continue for several days before it dies away, and may be bolstered by
further storms. The length of time enhancement persists seems to be
dependent upon the violence of the storm (enhancement will occur for many
days after a Kp value of 8 or 9). Unfortunately for those of us in close
proximity to stations like DCF39 we cannot use them as indicators. One needs
to be at a distance where there is a substantial difference between daytime
and night-time strengths of the chosen beacon station. This ensures that
there is a substantial ionosperic wave component. In the case of DCF39 this
probably means 1500kms or more (Brian is 1950 kms)
My conclusion....maybe this was a good propagation day (or two)...maybe we
should watch out for them in future.
Unfortunaely the noise level was quite high this weekend and I heard Mal on
Sunday struggling to pull through DJ1NL, I could see the trace and detect an
audible signal but could not read it at all for weak background TV qrm
signal almost on the frequency. It seems from the listing below, Mal didn't
quite make it as it would seem to be DJ1RL he was working. I believe these
are signals that may have been slightly enhanced. I also saw a DFCW signal
from DF8ZR at 0800z on Sunday at 'O', and saw Markus on DFCW who may have
been working Rich, but I saw no trace of Rich on FFTDSP4 and did not have
time to start up the machine with Argo installed.
Cluster spots follow....
136.5 PA0BWL 30-Sep-2001 1413Z in QSO F6BWO <dj1yfk>
<DL5CG>
137.0 DL3FDO 30-Sep-2001 1340Z clg F6BWO <dl6sn>
<DL5CG>
137.0 DL3FDO 30-Sep-2001 1341Z clg F6BWO
<DL6SN>
137.0 F6BWO 30-Sep-2001 1339Z <dl6sn>
<DL5CG>
137.0 F6BWO 30-Sep-2001 1340Z
<DL6SN>
136.5 G3KEV 30-Sep-2001 1318Z DJ1RL calling him <dj1yfk>
<DL5CG>
136.5 G3KEV 30-Sep-2001 1319Z DJ1RL calling him
<DJ1YFK>
136.6 OK1FIG 30-Sep-2001 1053Z cq <dl6sn>
<DL5CG>
136.6 OK1FIG 30-Sep-2001 1053Z cq
<DL6SN>
137.6 DF6NM 30-Sep-2001 1049Z clg OM2TW in DFCW <dl6sn>
<DL5CG>
137.6 DF6NM 30-Sep-2001 1050Z clg OM2TW in DFCW
<DL6SN>
137.6 OM2TW 30-Sep-2001 1039Z cq qrss 137.580 kHz
<DL6SN>
136.8 DJ7RD 30-Sep-2001 0929Z
<DL6SN>
136.8 DL3FDO 30-Sep-2001 0916Z in qso OM5CW
<DL6SN>
136.7 OM5CW 30-Sep-2001 0900Z hr signal like a "M.nk."
<HA6PC>
136.7 OM2TW 30-Sep-2001 0854Z & om5cw;& Low Frq.meetinG
<HA6PC>
136.7 OZ1KMR 30-Sep-2001 0850Z in qso OM2TW
<DL6SN>
136.5 DK7SU 30-Sep-2001 0845Z cq
<DL6SN>
136.8 DK6NI 30-Sep-2001 0828Z clg OM2TW
<DL6SN>
137.7 DF8ZR 30-Sep-2001 0802Z CQ in DFCW
<DL6SN>
136.6 OK1FIG 30-Sep-2001 0727Z cq
<DL6SN>
136.6 DK7SU 30-Sep-2001 0723Z clg OK1FIG
<DL6SN>
137.6 OM5CW 30-Sep-2001 0722Z cq
<DL6SN>
136.7 YO2IS 30-Sep-2001 0703Z cq
<OM2TW>
136.5 OK1FIG 30-Sep-2001 0639Z
<OM2TW>
136.7 OM2TW 30-Sep-2001 0555Z
<HA6PC>
136.6 OM5CW 29-Sep-2001 1742Z cq
<OM2TW>
136.5 OM5CW 29-Sep-2001 1549Z CQ
<OM2TW>
137.6 OM2TW 29-Sep-2001 1453Z cq qrss
<DL6SN>
136.8 OM2TW 29-Sep-2001 1423Z cq
<DL6SN>
137.7 DF6NM 29-Sep-2001 1419Z cq qrss
<DL6SN>
136.5 DF0WD 29-Sep-2001 1309Z vy loud, jo42fd(->jo32qg
<DJ1YFK>
136.5 DJ7RD 29-Sep-2001 1223Z clg G3KEV
<DL6SN>
136.7 EI0CF 29-Sep-2001 1147Z sri vy vy weak
<DL3FDO>
136.6 G3YXM 29-Sep-2001 1119Z solid copy
<DJ1YFK>
136.8 OM2TW 29-Sep-2001 1114Z now hr gd copy- sri Rich
ha<DL3FDO>
136.4 DJ7RD 29-Sep-2001 1046Z in qso F6BWO
<DL6SN>
136.6 OM2TW 29-Sep-2001 1030Z loud cq cq
<DL3FDO>
137.0 DK7SU 29-Sep-2001 1025Z a new one on LF
<DL3FDO>
136.6 DL3FDO 29-Sep-2001 0815Z clg OK1FIG
<DL6SN>
136.6 OK1FIG 29-Sep-2001 0805Z
<DL6SN>
136.5 G3KEV 28-Sep-2001 1600Z in QSO with ei0cf
<DL3FDO>
136.6 DL3FDO 27-Sep-2001 1641Z cq
<DL6SN>
136.6 DL3FDO 24-Sep-2001 1603Z weak but readably cq
<SP1DPA>
136.6 WHO 23-Sep-2001 1326Z station CQing, but too weak
<DJ1YFK>
136.6 ON5ND 23-Sep-2001 1226Z loud, cq cq
<DJ1YFK>
136.7 G3KEV 23-Sep-2001 1159Z cq cq
<DJ1YFK>
136.8 OM2TW 23-Sep-2001 1137Z
<DL3FDO>
136.6 DL3FDO 23-Sep-2001 1129Z clg OM2TW
<DJ1YFK>
136.4 EI0CF 23-Sep-2001 1059Z wkg G3AQC
<G3NYK>
136.6 LX1UN 22-Sep-2001 1931Z
<DL4TG>
G3NYK de GB7MRS 30-Sep-2001 0927Z >
There are some interesting new calls in there I see.
Cheers all and Good DX de Alan G3NYK JO02PB
[email protected]
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