Monday, January 24, 2022

Inverted-V versus 160m sloper on 40m WSPR RX

 

Number of spots last 24 hours. Red line is inverted-V, blue line is my 160m sloper, At the point the lines cross I switched to the LOG (Loop On Ground). Next 24 hours will be a comparisation between the inverted-V and the LOG.

Two or more WSPR receive stations with different antennas will quickly reveal which one is best. Although you need at least a 24h comparisation.

http://wspr.rocks/head2head/

Sunday, January 23, 2022

Progression

 

I realize I didn't post much on my blog since the start of this year. As a matter of fact, I didn't even make a single QSO this new year. The only thing I did was listening once and a while.

To the left you see the feedpoint of my log (loop on ground) receiving antenna. It consists of a loop approx 5x5m directly on the ground fed by a 1:6 balun. Measured the R and SWR, it is about 50 Ohm from 7-30MHz. However, I'm not really impressed yet. It receives about the same as my multiband vertical at top of my tower. Compared to my 2x20 doublet in inverted-V configuration it is just not what I expected. I plan to do a decent receive test with two WSPR stations.


I decided to install my 160m sloper again as well. I hope to use it in the upcoming PACC contest. You can click on the photo at th right to view it in a bigger format. At top you can see 3 wires going from the tower, one of them, obviously the one in the same direction of the beam is the sloper.

If time allows I would like to listen to some AM MW broadcast stations as well with this antenna. Although I found that my all band vertical does well on listening on MW.


To increase the efficiƫncy I did ad some radials to the base of the tower as well. Last year I made one QSO to VK (Australia), till now my record distance on topband.

Well, I decided to slow down my HAMradio activities. I really like this hobby but there are so many other things in this life. It is, of course, always a matter of priorities.


Saturday, January 8, 2022

Winding coax and other chords

 I wish I knew this years ago. A golden tip to wind coax, rope, electrical chords, garden hoses etc.