The 2018 International Friendship Exchange (INFEX) and DX Contest took place on Feb 17th, 2018. DX1ACE participated from the National High School Dasmariñas.

OCF dipole for 40, 20 and 15 m on a 12 m fiberglass pole and commercial v-shaped multi band dipole
Girl scouts having fun with the radio
Dasmariñas National High School

80/40/30 m Dipole

For the lower bands I am using a 40/80 m trap dipole. In order to become qrv on 30 m, I added a radiation coupled lambda/2 element for 30 m, using 10 cm spreader. After cutting the additional wire to the right length, the resonance on 30 m is exactly at 10.1 MHz. The additional element has no influence on the resonance for 40 and 80 m, but the impedance on 30 m is with 150 Ohm significant higher than 50 Ohm.

10.1 MHz Impedance (141 – j34) Ohm – VSWR 3
7.1 MHz Impedance (40 + j1) Ohm – VSWR 1.24
3.6 MHz Impedance (27 – j5) Ohm – VSWR 1.9

Bread Baking Gallery

I am baking my own bread for years already, but in the past I did it mainly with a bread baking machine using commercial yeast. In September 2017 I started my own sourdough, and over the last couple of months the breads became better and tastier. End of November 2017 I bought a kitchen machine, so that I can knead the dough with the machine. Important for a good bread is a slow fermentation of the dough. Usually it takes at least 16 to 24 hours from the first dough to the final loaf.

Potato-Walnut Bread
Light white Spelt

Continue reading Bread Baking Gallery

Linear Loaded Dipole for 20 m

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.