ad: L-HROutlet
ad: l-assoc
ad: l-gcopper
ad: l-innov
ad: l-Waters
ad: L-Geochron
ad: L-rfparts
ad: l-rl
DJ1WF Germany flag Germany

Login is required for additional detail.


Email: Login required to view

Ham Member Lookups: 3243


I was born in 1964 and I've got my license in 1997.

My first call was DG4ACC. In 1998 I extended the license to class B with complete access to all legal amateur radio

bands and outputs and got my new call DJ1WF.

My activity in amateur radio decreased rapidly after my son was born in 1999 and I built a small house in 2000 for my

family and myself.

After the new QTH was finished and the son became older I began setting up my shack.

. . . and. . . of course. . . my antenna .

My main activity in amateur radio is ATV. Corresponding to my favorite mode, I use my shack mostly to develop and

build technical equipment for ATV such as baseband units, TXes, RXes and so on. A very special favourite of mine i

s to develop, build and run equipment for ATV-transmissions via laserbeam.

One result of these laser-activities is the very first optical input in the THz-range on a ATV repeater in the whole world.

Now there are some other ATV repeaters with an optical input, but DB0TVH was the first one ever.

For details, please have a look at http://dj1wf.darc.de (German language)

or http://home.arcor.de/W_Fritz/Laser (shorter English version).

In 2007 Tom, DL9OBD and myself performed the long distance record for ATV-transmissions via laser. We sent a

color ATV signal via laser over a distance of 83,3km. We know there are other and longer distances transmitted via

laser, but they all made narrowband transmissions, no ATV. An ATV signal is a broadband signal und needs much

higher signal levels than CW for example. So it is much easier to get a narrowband connection via laser than a

broadband one. The ATV signal quality over the 83,3km distance was quite good, so we expect much longer distances. In 2013, we improved the maximum Laser-ATV distance up to 118,4km ( http://dj1wf.darc.de/Laser/Brocken/Brocken.html ) .

Depending on the activities on higher frequencies, my activities in shortwave are poor.

But I like to use mobile equipment mostly on 40m during longer travels by car.

It is not so often, but sometimes my QRL sends me some miles away from home.

In such a case I take my Icom IC735 and fix it on my car's dashboard. My Antenna is an Outback1899, antenna length 1,70m.

100W output combined with this short antenna is normally enough for fine QSOs through Europe.

During good conditions, I also worked an American station on 40m with my mobile Equipment on the way to QRL in

the morning, and I cracked a pile up to GB2HI on Hilbre Island during my way back home on the motorway A7

somewhere between Kassel and Goettingen in Germany. And, in Summer 2012 I had a fine 40m-QSO from my

mobile station with a very nice OM from Brasil during my holiday time. More than 10000 km with only 100W and

1,7m antenna length on 40m with 5/7 report was very amazing.

Beside my mobile activities on shortwave, I also use mobile equipment for ATV, too. The ATV TRX and the antennas

are completely homemade.

The car is a leased one by QRL, so I am not allowed to install equipment or antennas permanently. The only way to

fix all the antennas is to use magnetic antenna mounts.

The following picture shows my mobile antenna farm .

The next picture shows my ATV TRX. It was built in 1997 and modified several times. This TRX was used for ATV

transmissions from a hot air ballon, from a flying helicopter, from several portable activities and . . . until today. . .

for mobile ATV. The housing suffered from all these activities, but the inner circuits still work well.

Another hobby is to develop and build equipment for VLF-reception (the very loooooong waves) in the range from

3kHz-150kHz. The main results are a very simple VLF converter which only needs a 30cm telescopic rod antenna

for fine results and a VLF pocket receiver. The pocket receiver was published at the "holy bible of VLF enthusiasts",


. . . to be continued . . .



6299844 Last modified: 2015-07-16 00:29:10, 5249 bytes

Login Required

Login is required for additional detail.

You must be logged in to file a report on this page

Please login now...

QRZ Logbook Summary for - DJ1WF
Latest Contacts for DJ1WF at QRZ.com
dedateband mode grid Country op
JX9JKA 2013-01-04 40m SSB IQ50ov Jan Mayen Island Svein Rabbevag
PY5QW 2012-08-03 40m SSB GG54fo Brazil VIGAND OLSSON
DO1BRU 2012-03-20 80m SSB JN48wg Germany Bruno
DD1JD 2012-03-18 40m SSB JO40ic Germany Dirk Symons
PE1KEV 2011-12-16 40M SSB JO22ea Netherlands Peter van den BOS
DH5HG 2011-10-20 40m SSB JO41ri Germany HARALD GEDDERT
DH7HT 2011-10-20 40m SSB JO54ud Germany Horst Thodte
OE5SLN 2011-10-17 40m SSB JN68re Austria STEFAN LETTNER
W7WA 2011-10-14 40m SSB CN87pi United States DANIEL S HANDA
DD1JD 2011-10-11 40m SSB JO40ic Germany Dirk Symons
DO2HRB 2006-08-02 2M FM JO50io Germany Hans-Rainer Bergmann

Book Totals: 11 qso's   9 confirmed Get a free logbook at QRZ.COM

ad: giga-db
Copyright © 2015 by QRZ.COM
Tue Oct 6 06:09:42 2015 UTC
CPU: 0.122 sec 60366 bytes mp