Hi Clemens,
Thanks for the report. I've just stopped the TX, the experiment is
over. Will prepare diagrams and a summary now.
Oh yes, i can see plenty of solar modules arround that QTH... Is your
house the one close to the forest or on the other side of the street?
If it is the house near the forest, you could easily arrange a 200m
long wire or place the RX in the forest, using an active antenna and
some 100m long coax cable :-)
The shield effect of the trees is not so strong on MF than in LF, that
was my first impression in a recent test...
I will QSY to 137 kHz, transmitting 2 QRSS-120 sequences on 17:30 UTC
for Edgar in Tasmania and come back to 472.5 kHz CW in the late
evening...
Back soon with the results...
73, Stefan/DK7FC
PS: We should be in the limit of the groundwave range on 630m.
Am 09.09.2012 11:49, schrieb Clemens Paul:
Stefan,
still aural copy of your
signal (which would even be strong
enough for CW) on 478,7
with S4 and a SNR of 6dB in 100Hz BW
despite the surrounding
photovoltaics arrays which are ubiquitous in
Bavaria.
But I have to resonate the dipole
exactly and what is even more
important I have to balance the 43m
long feeder strictly
i.e choke common mode currents
Otherwise I would hear only noise at
this time of the day.
73
Clemens
DL4RAJ
-----
Original Message -----
Sent:
Saturday, September 08, 2012 9:07 PM
Subject:
Re: LF: LF/MF night and weekend
>wouldn't it be better to choose a slightly different qrg
to avoid interfering with the carrier
>of the 'RP' NDB beacon (which is BTW masking your signal
here)?
>Perhaps 500Hz up or down would be fine.
OK,sorry, I see now that 477 is *dial* qrg.
Your sig is S9+ on 478,7kHz.
DF0WD is S9 with qsb on 472,5kHz now.
73
Clemens
DL4RAJ
-----
Original Message -----
Sent:
Saturday, September 08, 2012 8:12 PM
Subject:
Re: LF: LF/MF night and weekend
>I just started my TX in OP4 mode on 477 kHz
dial. Will run in until sunday evening
Stefan,
wouldn't it be better to choose a slightly different qrg to
avoid interfering with the carrier
of the 'RP' NDB beacon (which is BTW masking your signal
here)?
Perhaps 500Hz up or down would be fine.
73
Clemens
DL4RAJ
-----
Original Message -----
Sent:
Friday, September 07, 2012 5:37 PM
Subject:
Re: LF: LF/MF night and weekend
MF!
I just started my TX in OP4 mode on 477 kHz dial. Will
run in until sunday evening. BTW the PA was not damaged, it was
just a under-dimensioned fuse which i used for the first tests and
forgot to replace it by its actual value. Now the transmission should
work without interruptions, i hope.
Would be interesting to have some 24 hour monitoring data of the
complete saturday, so if you like to take a part in this "study", pse
run the RX during that time :-)
Tnx and 73 to all, Stefan/DK7FC
Am 07.09.2012 14:19, schrieb Graham:
First demonstration that what go's East , not
always go's West !
Spectacular s/n levels in the Moscow area but nothing showing
TA ?
G..
G.., It was probably due to thunderstorms in the US and SA. YV7MAE had
to QRT due to heavy lightnings...
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