For the second time I was invited to participate in „the“ contest at DD1A, the station of the German- Swiss contest team in Singen/ Hohentwiel. This is a great honor for me as my ambitions and CW skills are mediocre.
It was lots of fun, meeting the guys again. We had supper on Friday night. Later we split up, some went to work the first shift while others tried to get some sleep before operating.
All the equipment performed flawlessly except for a few minor issues. Saturday morning I was running on 160m and 80m for about three hours before I finally went hunting for multipliers on 160 at our sunrise. With the recently installed beverages, the Rx- performance on the low bands increased significantly. Thanks Andy, HB9CVQ!
We had lots of fun and ended up with a reasonable result, considering the condx. I start thinking about joining the team for the ARRL DX CW in February…
Since 2015 I made serious attempts to participate in this contest in the QRP class.
To my big surprise I ended up 2nd place in Germany/ QRP in 2015. With no dedicated Rx- antenna and moderate effort I reached 46,617 points with 261 QSOs whereof 39 were mults and 2 had been with W/VE.
In 2016 I put more effort in (but still no proper Rx- ant) and ended up 2nd place in Germany/ QRP again. This time with 63,210 points (327 QSOs, 1 W VE/ and 41 mults). There were some issues with the interface to the KX3 during the first night, forcing me to use the PC only to log the contacts. All QSOs were hand made.
Finally I built a shielded loop and tried again in 2017. This time 1st place in Germany/ QRP with 86,296 points (425 QSOs, 1 W/VE and 45 mults).
A delta loop antenna is not particularly suitable for SOTA. It requires much more space than a vertical and the set-up is more complicated.
Nevertheless I’d like to show this design here because sometimes space (and weight) don’t matter and a low take off angle is welcome. One possible scenario could be the VK/ZL/JA <> EU S2S event.
While searching for an alternative to my Linked- Dipole I tripped over the posting of Pedro, CT1DBS, illustrating an end-fed half-wave (EFHW)- Dipole with Traps. Here is the Link to his article. With this design changing bands can be done in no time thaks to the traps. Lowering or modifying the antenna is no longer necessary.