Hello to all LF`ers, dear friends,
at first we have to say many many thanks to to all
of you, who made QSO´s with us or gave us reports, info and tips by mail or
phone. And we should like to thank the officials from RegTP and Deutsche Telekom
who allowed us the activity from the DLF-site and gave us every support.
I`ll give a summary.
The first QSO took place at 8.45utc, testing with
1W, 5W and 20W (0.3A antenna current), the last QSO was abt 14.00utc because of
an approaching thunderstorm 70Km apart. We made 19 QSO´s, 10 only on 136KHz, 9
duplex 136/7030KHz. We received 7 phone calls, the northernmost from Jan, LA8AK
in Kristiansand.
And we got mails from 16 different OM´s with a lot of
reports, measurements, tips and comments. The southernmost came from Brian
CT1DRP (we are glad to be the first audible signal for you and the friends from
Spain).
In the morning Markus matched the antenna with a
homemade tuner by using scope and other equipment and got 1,9A antenna current.
In the afternoon he connected the antenna directly to the amplifier - and got
2,2A ! One should do the simple things first.
It seems the DLF-antenna is
especially made for our band.
Dave, I think your 5W are enough for a QSO. But the
Frankfurt-area-noise is very strong - even on 40m. And so was the local noise
composed:
The LF`er keying on 136 QSX 7030. In the background other boys of
the gang talking. A signal comes from the 40m-transceiver by speaker (headphones
forgotten),
not so clear. The LF`er increases volume. The boys increasing
their loudness. The LF`er screaming "haltet mal die Klappe", what means "be
quiet, please". And then the mobile phone ringing and in the rear of the house a
worker with his lawn-mower. I think we need better organisation.
Two LF`ers from Frankfurt visited us, 4 members of
the maintenance personnel came along, and even the regional Telekom-boss arrived
and asked kindly what happened.
During noon 3 of our group drove around and made
some measuring of our fieldstrength. We will calculate and compare with the
figures from Dick and Jim. Markus will give another e-mail with more technical
and calculating details.
The receiving conditions were bad as expected. We
used a tuned loop, but must be better next time ( yes, we hope for a next time).
And we will reduce our equipment. It is not necessary to take along 3 complete
stations, so much measuring equipment, several boxes with cables, connectors,
tools and material for every incident. 2 VW-variants were fullfilled. But now we
know more than before.
We had a great event. Thanks for participating.
For the group: DF6NM Markus, DL2NDO Ralph, DK3GH
Ralph, DL3NDR Roland
73 Walter DJ2LF
Thema: LF: Activity from DLF´s 360m mast
Datum:
15.07.02 22:16:09 (MEZ) - Mitteleurop. Sommerzeit
From:
[email protected] (Walter)
Hello to
all LF`ers,
on Wednesday, 24th of July, the 153KHz transmitter
of Deutschlandfunk in Donebach (JN49ON, 50Km SSE of Frankfurt) will be off air
due to scheduled maintenance. By the friendly cooperation of the site personnel
and with consent of the regulation authorities, a small group of German LF
amateurs has been granted access to one of the 360m masts between 7:00 and
15:00UTC. With a little luck we might be able to achieve about 30dB more
radiation efficiency than at home.
We will probably need some time to work out the
impedance matching. After that, we intend to operate preferably in CW and
Slow-CW modes. As we expect a rather high noisefloor from the Frankfurt area, we
will bring along a tuned loop for receiving, and we will be QRV on 7030KHz in CW
as well. If nothing else works, please give us a phone call on+49 174 3692499,
or send an email note via the reflector or to
[email protected] or
[email protected].
Let`s look forward to a successfull day, hopefully
without thunderstorms or strong noise.
73
The group: Markus - DF6NM, Walter - DJ2LF,
Ralph - DL2NDO, Ralph - DK3GH, Roland - DL3NDR, Franz - DL5NER
