September 30 Update - New Zealand!

Semi-interesting conditions towards North America. The afternoon was very interesting though, as OJ spotted a DU dialect on 1233 and then on 1224. First thought to be the Australian. Absolutely not. A "B-Sport, Sports news update" revealed that this was Invercargill, New Zealand! Several other NZ stations found on the full hour at 1600Z including 927, 1080, 1107, 1116, 1152 and 1233, 1287 and 1458. The familiar Newstalk ZB Wellington 1035 had a very potent signal.

First September log of New Zealand in Kongsfjord. Albeit only 8 hours away from October...

Antenna in use: QDFA. We should have compared it with the original NZ antenna, the 58 beverage but we didn't pay attention to the stations until after we had recorded the full hour on the Perseus'.

One verie last night, 1370 WFEA Manchester NH.

September 29 Update

A few interesting stations, such as 1230 KSYM Mankato MN on the 28, and also a few Aussies, but nothing like the DU bonanza experienced in Lemmenjoki on the 27. Well, we weren't listening at that time, were we... Interesting conditions today - OJ reports that the QDFA has nailed its first Hawaiian with 1500 KUMU Honolulu at 1300Z. We were complaining that the QDFA didn't work in daylight. OK so maybe it does...

In any case, the 350 degree bearing of the QDFA makes it a much more westerly oriented antenna than I had expected, given its broad front lobe. The 310 hears eastern North America better, but the QDFA sort of takes the rest, including Hawaii and Japan. The big question is: Is it too broad? Will the more directive beverages prove better in the long run? Time will tell.

Recent veries: 1330 WRCA Waltham MA, 1230 KSYM Mankato MN, 1410 KOOQ North Platte NE and 1490 KCFC Boulder CO.

The Full Kongsfjord QDFA Story

has finally been written. You should find a 1.2 MB pdf here.

Conditions: Nothing exciting this night and morning. Except that the grim weather report never materialized.

September 26 Update

Checked a few of the Sept 24/25 recordings and all the Sept 26 recordings. Conditions not too bad. Stations worth mentioning are 710 KCMO Kansas City MO, 790 WAYY Eau Claire WI, 1370 WFEA Manchester NH (basically a new log), 1410 KIIX Ft Collins CO under KOOQ, 1430 KCLK Asotin WA, 1470 WNYY Ithaca NY and a very potent 1490 KQDS Duluth MN with its new moniker "The Fan 1490".

The QDFA still proves to be superior at night, while the 310, connected to my other Perseus, dominate mornings. Actually, comparing the QDFA and the 310 is a bit unfair to the QDFA since the 310 has many of the European stations in its side null. It is somewhat more sensitive towards eastern North America and South America while the QDFA with its 350 degrees bearing goes further west. To illustrate my point: At one instance on 1430, the 310 beverage had KLO on top and CKHT audible underneath, while the QDFA had KLO on top but KCLK Asotin WA close behind.

Winds up to 25 meters per second expected overnight, so it will be interesting to see if the QDFA is still up tomorrow...

September 23 Update

The minor disturbance seen on the 21 apparently stirred up the ionosphere enough to allow good conditions the day after. Very good signals especially from Colorado and Nebraska on Sept 22. A brief check of two of the TOH recorded (0200 and 0300Z) revealed KKAR Omaha NE 1290, KFKA Greely CO 1310, KOOQ North Platte NE 1410 (new log), KGRE Greely CO 1450 (with a monstrous signal for a GY station!) and KCFC Boulder CO 1490 (new log). Most interesting stations were found above 1100 kHz.

The QDFA is still performing well. With two Perseus' running, one with the QDFA and the other with the 310 beverage, I could compare the two antennas at 0300Z, 42 minutes before sunrise. Even at this transition period, the QDFA was noticeably quieter than the beverage.

September 21 Update

Not very exciting the last few days, especially tonight with higher K-indices and little to be heard. Friendly email from the PD on KYES Rockville MN though. KYES is serving the St. Cloud area and they also air Relevant Radio. I also received a Twitter message, making it my first Twitter QSL.

Cool to see new AM voices. KYES is going to be quite dominant in the Arctic part of Europe.

QDFA Payback Time

A few new ones for me logged the past weekend and Thu morning local: First KXYZ Houston TX 1320 on the QDFA, later on WCCN Neilsville WI 1370 on the 310 beverage. At 0200 Thu KYES Rockville MN 1180 surfaced over 1179 on the QDFA with a nice full-hour ID. KYES is new, 5 kW nights most of it going NE so is bound to be a dominant in these parts. Veries from KXYZ and WCCN. Receiver: Perseus.

Finally Confirmed - The QDFA Blows The Beverage Away

Yes, it does. At nighttime, when strong signals from Europe dominate the band, the QDFA has proven to be totally superior. In a large number of instances where EU QRM totally obliterated the NA frequency when using the beverage, the QDFA either brought audible levels, or even readable levels. If I had audible levels with the beverage, the QDFA produced readable levels. And in every instance where the beverage had readable levels from North America, the QDFA produced better readability.

There is no going away from this. Check it out yourself. These 10-second recordings from 1510, 1520, 1540, 1550, 1560, 1570 and 1600 should provide enough evidence. The first 5 seconds are recorded off the beverage, the last 5 off the QDFA.

So what brought these dramatic changes from last weekend? I don't know for sure. Maybe the radials I put out worked. Maybe propagation didn't favour the properties of the QDFA. Maybe there is some other obscure reason. My unqualified guess is that the radials worked. Btw I added another set of radials just before it got dark; they run perpendicular to the loop.

Of course this doesn't change the fact that the QDFA sensitivity rolls off from around 1000 kHz and downwards, and the fact that when the interference is reduced by approaching daylight the beverage is always more effective. But we knew that all along. The QDFA is set up for being able to DX the difficult midnight to dawn period. Thanks Dallas Lankford for this extraordinary experience!

Update: It appears that the effect of the QDFA bleeds away when civil twilight approaches. 45 minutes before sunrise (twilight lasts much longer at northern latitudes) there is virtually no difference between the QDFA and the beverage, although EU interference is still quite heavy.

The QDFA Strikes Back

I wasn't prepared to let tens of hours of work go down the drain. Several sources have indicated that antennas with vertical elements such as the EWE and K9AY depend on good ground to produce good nulls. And that radials is one way to improve their performance on poor ground. So I found some rather thick copper string, surplus from navaid upgrades at the airport, and laid the wire on the ground at 45 degrees intervals.

I don't know if it's the radials or condtions in general or what, but it appears that the QDFA is indeed functioning better now. I was able to null the slop from St. Petersburg 1494 enough to get a readable signal from Longyearbyen-1485. Furthermore, I tested 1557, where the 58-degrees Asia beverage had Taiwan and France (backlobe) equal strength. The North America beverages had Lithuania very strong on their backlobes, while the QDFA (which points directly towards Lithuania on its back lobe) had Taiwan soundly on top with France underneath.

So maybe, maybe, maybe. The coming night will tell.

First Chinese NDB Heard In Europe (Edit: Norway)?

Maybe not. I don't have the statistics. But NDB Database expert Michael Oexner was very enthusiastic when I asked him what station on 439 kHz ID'ed "WD". His reply:

WD-439.0 Zhonghao/Taiyuan/Wusu CHN N37 39 30 E112 46 54

Heard today with my Perseus connected to a 58-degree beverage at 1800 UTC. The distance should be roughly 6,500 km. Extremely weak, of course. Thanks for your info, Michael!