Stefan, VLF!
In general, I noticed decreasing conditions on VLF during the past
weeks. This has on one hand to do with increasing noise and longer noise
periods but this alone can not explain the bad propagation.
My last transmission, about two weeks ago was hardly copied by your
grabber, while during winter it was not a problem to make a fat trace
with the same setup. Ossi experienced the same.
I do not plan transmissions on VLF for now, except with the kite antenna
which will more than compensate the bad propagation.
This only reflects my "feeling" without any proof or measurement
results.
So out of this feeling, for me it's no surprise that Uwes signal is that
"weak" now compared to some weeks ago.
73
OE3GHB
Gerhard
Am Dienstag, den 03.05.2011, 21:04 +0200 schrieb Stefan Schäfer:
> Uwe, VLF,
>
> Today you are visible in 60000 and traces in 6000 but the QRN
> decreases the SNR significantly (i didn't change the brightness slider
> since the winther time!).
>
> 73, Stefan/DK7FC
>
> Am 02.05.2011 17:21, schrieb Stefan Schäfer:
> > Hello Uwe,
> >
> > Nice to hear from you again. Yes, no trace here. Your last
> > transmission of March, 29 is still visible and if i compare the
> > signal levels (i.e. colors) and substract 3 dB you should be visible
> > anyway, but this may be due to the effect of noise blanking...
> > A grabber in north DL would be useful but who can arrange that? :-)
> >
> > 73, Stefan/DK7FC
> >
> > Am 02.05.2011 15:34, schrieb [email protected]:
> > > Hi all,
> > >
> > > my stn transmitted a carrier yesterday 0000 -1430UTC and today
> > > 0730 - 1309UTC.
> > >
> > > abt half the output power as some weeks ago.
> > >
> > > the only stn out of eleven grabbers that received the sign was
> > > Todmorden.
> > >
> > > my stn will be back on the air when todays strong wind calms down
> > > agn.
> > >
> > > GL
> > > UweIdj8wx
|
