DL9JGO
ROOTS Already as a child I was highly interested in electrotechnology with a special tendency towards radio technology. I modified my first transistor radio receiver T100 of VEB Sternradio Berlin in such way that one day I made a desperate and finally lucky attemp to invent and rebuilt the whole thing completely new, means I put in a new circuit with a self constructed circuit board (in that time still made of hard paper). I reused only the surface with all its buttons, switches and scale indicator. Everything should look the same as before. This “new” T100 worked on all wave bands (L-M-S). I was 15 ye ars old and actually only wanted to spice up a bit my long and expansive saved up "T100" for using it for ham radio. As a teenager I naturally got in contact with the amateur radio section of our city Zwickau, though first mainly as a more passive SWL member without a sending license. With beginning my studies I got to the point where I had to decide whether I would stay faithful to the ham radio or if I would give my priority to music. I finally choose music, but with a serious intention maybe one day to take the nessecary test in order to get a official sending license.
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35 years later… A long time has passed before it finally happened: In 2006 I acquired my “beginner license” to start with. Since 2010 you can find and hear me as OM (=Old Man) with the call signal DL9JGO on all ham radio bands. My highly valued colleague OM Andreas (DL4JAL) seperates all radio amateurs into two groups: Some mainly like to "tinker", others are more often “on air”. In the beginning I was one of the former, but in the meantime this has changed a bit.
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My Station
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Home Brew Projects
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CAT control for antenna coupler For the balanced 1KW antenna coupler BX-1000 developed by Norbert DL1SNG I wrote a console program (download here), where the QRG tracking of the coupler is done automatically by the CAT signal of the respective TRX. The program runs under Windows 7/8/10/11. |
Another small program for this coupler (download here) allows to create and manage backups of the channel parameters stored on the coupler. The program runs under Windows 7/8/10/11. |
Radio amateurs, who own the 200W antenna coupler BX-1200 (also by Norbert DL1SNG), inspired me to develop corresponding program variants also for this coupler: --> console program, --> backup program.
A detailed description of the above programs has been published in issue 1/21 of the magazine "Funkamateur". |
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For my LDMOS-PA I developed an Arduino© circuit which allows frequency controlled switching of the low pass filters. You can download the little documentation here. |
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There are plenty of websites for displaying any locator. However, I wrote a program that works without starting a web browser: LocatorMap. The program can be run on any Windows PC. |
The leading portals for uploading ADIF log files also provide a graphical representation of the QSOs made on a world map. |
However, it is usually not at all or only with difficulty possible to differentiate according to individual amateur bands. With my program 'AntennaMap' it is possible to read out the achieved connections band and also mode specific from an ADIF log file and to display them graphically. So it is possible to draw conclusions about the radiation characteristics of the antenna for the individual bands. |
This program also does not require a web browser to be started and can be run under Windows 7/8/10/11. |
This program is used to calculate the relevant parameters of a coaxial transmission line. The download of the program "SquareCoax" is available here. It can be run under Windows 7/8/10/11. |
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www.hrdlog.net
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Show any locator: |
statistic report (since 2014-09):
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