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Hi Stefan,
>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?
Attached a google earth picture where I have
inserted the 42m long open wire feeder (yellow) running from my
house
to the 2x156m horizontal V-dipole
(red).
73
Clemens
DL4RAJ
----- Original Message -----
Sent: Sunday, September 09, 2012 2:08
PM
Subject: Re: LF: LF/MF night and
weekend
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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Dipol 2x156m.JPG
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