Monthly Archives: May 2026

2026 AA6KJ WPX CW (15 m)

“Bad weather” pretty much summarizes the contest for me. Both in the ionosphere and lower. Poor propagation overall and thunder storms circling my QTH. The poor propagation also drove people to other bands (except those of us who had decided to do single band). Whenever the band opened slightly to some direction, for sure there was a thunder storm in that direction and terrible QRN. My ears are still ringing from those lightning crashes – volume had to be turned up and APF on in order to copy stations. I do not want to wear headphones for a while… One could argue that it must be the lightning that fires up the ionosphere 🙂

Finally, late on Sunday afternoon the band opened to EU but then the QRN prevented me from working most of the stations. Nothing more frustrating than hearing a bunch of people calling but I can’t copy them. Then there were some minor episodes like losing the power for a bit during the contest, AC leaking condensed water into my ham shack and me being attacked by a fly swarm while trying to work. The latter was very annoying and distracting! They must have been attracted to my “contest aroma” (sweating with the AC off and no shower). And when the contest was almost over (1.5 hour left), I hear a loud rumble through my headphones and realized that a thunder storm had just developed almost exactly above my QTH. Turned off everything and pulled cables off. I kept waiting for it to go away but no, it decided not to go anywhere (game over). The timing of WPX is really bad for us due to the storm season but what can we do?

But I still managed to get 1252 QSOs and 706 prefixes. However, I am pretty sure that there are tons of copy errors because of the QRN and poor band condx (very weak signals) but that’s life…


Multi program action example

Here is an example where in one QSO (SP5EXA) RX A decoded the first message and RX B the following message. So, the QSO would not have completed (or, well, could have after retries) without the two RXs.

Here RX A was connected to inverted L and RX B to BOG-NE. The ! sign indicates that the decode was received only with that RX.

Factors affecting how BOG antennas work

My half empirical points for successful BOG antenna deployment:

  • Poor ground conductivity is good for BOGs
  • Do not rise the antenna wire too high from the ground (< 2″). This includes grass and other vegitation on the ground. Rising it too high can decrease the directivity.
  • If you install radials, make sure that they are not too long. Three 40′ radials per end point seems to be good for 60/80/160.
  • Length: 150′ – 300′ has been often used. I tried 150′, 200′ and 300′. 300′ worked best in my case. It has good pattern on 160 m, 80 m, and 60 m. I have not tried it on 40 m since I have 3 element beam there.

There are many stories online where some people say that BOGs work great and others that have absolutely no success with these antennas. It took me a while to test various setups but now I finally have a working system. It easily beats my inverted L in receiving on 160/80/60 especially when lightning is present somewhere. But I tend to use both in receiving (see other posts on “multi”).