Meeting Stephan, DG1BGS, in Singapore. He is moving to Singapore in 2018 and will apply for a 9V license.
As the propagation conditions getting worse for 15 m and 17 m, I extended my linear loaded dipole on both sides by 1.8 m in order to cover the 20 m band. SWR is ok without modification of the 1 : 4 transformation line.
Will see, how it works in the upcoming CQWW DX CW contest.
After replacement of my 80/40 m trap dipole with the G5RV antenna, I made some measurements. The antenna has a height of 12 m at the center, and is hanging as an inverted V with both ends still 4 to 5 meter above ground. The symmetric feeder line is connected via a 1:1 balun to 12.9 m 50 Ohm coaxial cable.
Finally, I received my amateur license for the Philippines with the call sign 4E1ADW. Now trying to get a 2 letter suffix, like DU1KG or 4E1KG.
During this visit I had more time to setup my station in Tagytay and test the antennas. I was very impressed by the performance of the spider beam and even the good propagation on the lower bands.
In Singapore space is limited, and in our appartment it is difficult to setup any HF antenna. Our balcony is the only place where I have a space to mount something. Even there, officially nothing is allowed to extend out from the building.
I decided to setup a simple vertical, using a telescopic fiberglass pole, which I can pull out temporarly, when it is getting dark. The pole has a total length of 10 m, approx. 1 m (the lowest segment) safely mounted to the balcony railing and sidewall.
Installation of my 12 m tower and shortwave beam.
4 segments 3 m each
The last segment put in place
Many open source programs are available for Windows, OS-X and Linux, if you want to become active on the amateur radio HF bands using digital modes. Modern coding and modulation schemes allow for long distance contacts with low power.
Below you can download my presentation about PSK 31 (Phase shift keying) and JT-65/JT9 modes as presented in our monthly SARTS meeting August 2016 in Singapore.
Presentation (pdf): WeakSignalModes