Tag Archives: DX

Tips for Working DX From a Modest Station

Lately, there has been quite a bit of nice DX out there on the HF bands.  If you are like me, you have a modest station to work from (100 watts and a wire antenna or two), but still like to chase DX. Often, you’ll hear lots of other “1 landers” working the DX station, but you can’t ever seem to break the pileup. Well, I have a few suggestions I’ve gathered over my 30 years of DX’ing and contesting that I’d like to share, which might help you get a few new ones.

One universal “truth” I have found though, above all others, is that working DX on CW is infinitely easier than working DX on SSB. If you have not yet jumped in to learn CW, I highly advise it if you want to be a successful DX’er and work the rare ones from a modest station. FT-8 / FT-4 is a bit of a different animal, and not all of what I will share is applicable to those digital modes, so I am going to focus on CW and SSB (although I work a lot of FT-8 and FT-4).

Without further ado…

#1: Listen, Listen, Listen

Did I mention you should listen? This is the first step in the process to catch that needed country. Almost all of my other recommendations stem from this… don’t be the alligator on the calling frequency… ever. A good DX’er listens far more than they transmit.

#2: Use a DX Cluster

I recommend using a DX Cluster for finding the DX.  It is much easier to find the choice DX if you have others looking for it too! If you’re not familiar with a DX Cluster, there is a good primer here. If you are but aren’t sure which to connect to, I recommend W1DX (dxc.dxusa.net:7300), unless you use Ham Radio Deluxe, in which case I suggest WA9PIE-2 (hrd.wa9pie.net:8000). They both run the DXSpider cluster software. When you use a “cluster”, you might want to set a few filters to get rid of the spots (the reports of DX activity) you don’t really want to see. Here is a couple that work on DXSpider to get you started.

From the cluster, console enter the following to only see DX spots originating from US and Canadian stations…

“reject/spot 0 by_itu 1,3” <enter>
“accept/spot 0 by_dxcc k,ve” <enter>
“sh/mydx” <enter>

Disconnect from the cluster, and then reconnect. At this point you should only see DX spots from US and VE stations

Working DX
Typical DX Cluster screen
#3: Find and Hear the DX Station’s Calling Frequency

Once you identify the DX you want to chase, go find them on the air. Sometimes, that is easier said than done. Here’s where a set of good headphones and your radio’s RX IF filters will really come in handy.

Wearing headphones is important because they filter out all that background noise.  If they are good headphones, they can also enhance the audio you are listening to and reduce fatigue.

As for your radio’s RX IF filters, this is where you may need to “RTFM”. Most modern HF radios will have some form of IF filter or DSP to shape the received audio.  On Yaesu radios, they are “Width”, “Shift”, “Contour”, and “APF”. I won’t go into detail about their use here as all radios will be a bit different.  I will say, however, that learning to use them is a critical part of effectively hearing the DX station. Ultimately, you can’t work ’em if you can’t hear ’em. Do not start calling the DX until you can reliably hear them.

#4: Find Where the DX is Listening

DX stations will listen in one of two ways… simplex (same TX and RX frequencies) or split (different TX and RX frequencies). Sometimes, the spot on the cluster will tell you where to start. However, many times the spots are not entirely right.

Simplex

If DX is working simplex, you are all set as to finding their RX frequency, but trust me… working rare DX simplex can be very difficult and painful. Always pray for split ;).

Split

If they are working split, finding the RX frequency can be a little challenging.  Remember, working split means the DX station is transmitting on one frequency and listening somewhere else.  Notice I didn’t say “on another frequency” – this is important to recognize. Many times, if the DX is listening on only one frequency, you can determine this from the DXCluster spot (i.e. “up 5”, which means that they are listening up 5 kHz from their TX frequency (such as TX: 28.507 / RX 28.512). However, often the DX is listening in a range of frequencies (i.e. “up 5-10”), which means they are listening somewhere between 5 and 10 kHz from their TX frequency (such as TX: 28.507 / RX 28.512 to 28.517). Now comes the fun part.

If the DX is listening split, it’s your job, as a skilled DX’er, to figure out their strategy and exploit it. Remember, even if the DX says “listening up 5”, they may not be listening up 5.  They may in fact be listening up 7.2 or 9.3 or 3 kHz. Your job is to figure that out. Recently, I worked a DX station on CW that would sign “UP 1”.  He was actually listening up 1.3 kHz. Had I simply called him up 1 kHz, I would not have worked him.

Patterns

To figure out their pattern and have a strategy to exploit it, you have some work to do, and likely some frustration in your future.  It’s all worth it, though, if you bag an ATNO (All Time New One). Here are some steps to follow to find the DX stations listening frequency if they are working split.

  • Use the “split” function of your radio (you do know how to use “SPLIT” on your HF rig, right?).  Set the “A” VFO to your RX frequency and the “B” VFO to a TX frequency where you think the DX is listening.
  • When the DX answers a station (i.e. “W1ABC UR 599”), flip the VFO’s so you are listening on the “B” VFO (or use your dual receive).  Now find the station that the DX answered as they give their report. This can be tough, but is essential, especially if the DX is listening across a range of frequencies. Finding the station answering the DX gives you an idea of where the DX is actually listening. Do this until you can find/hear a station that the DX answered.
  • You can now do one of two things… flip the VFOs back and start calling the DX on the frequency you found that the other station was using, or you can keep listening to find if there is a pattern (like is the DX creeping up the band, down the band, moving 500 Hz at a time, staying put, etc). Once you can figure this out, your chances of working the DX greatly improve. When you’ve got their pattern (most DX stations will have one), flip your VFOs and work ’em. Repeating the process as needed.
[Side Note – Being DX

An important side note on being a DX station that may help you be better able to work them… a good DX operator will (in my opinion):

Work split. Simplex is fine if the DX is an everyday DX station like Poland or England.  However, if they are even semi-rare, and expect pileups, they should work split. Simplex makes working rare DX very hard.  The DX’ers have to separate the DX from the calling stations, which can be nearly impossible if the stations in the pileup call over top of the DX (which they do most of the time). IMO, simplex is bad.

Manage the pileup. Managing a pileup is hard and is a learned skill. To manage a pileup, the DX operator needs a strategy. It could be nearly anything, but having a strategy allows the DX to work more stations more efficiently and with less fatigue, and makes it easier for skilled DX’ers to work them.

]

#5: Use Your Rig’s “Monitor” Feature

If you’re working SSB, use your rig’s “Monitor” feature to listen to your transmitted audio.  Do this to make sure it is not overdriven and sounds good. If you can adjust your TX audio as many new rigs can, do a little work to determine the best TX audio configuration for your voice and equipment. For many voices, there are differences in DX versus Rag Chew TX audio settings. For this, Google is your friend. (I recommend using “Monitor” for CW as well… lets you hear the quality of your transmitted tone too).

#6: Call High / Low

If you’re working CW and having a hard time working the DX on what you know is the correct frequency, try calling 100 Hz up or down from there. Sometimes that will serve to separate your signal from the others enough to work them. Due to the width of SSB signals, this rarely works on SSB, but can. Experiment.

#7: Watch Your Keying Speed

Also for CW… ideally you will match the DX’s keying speed. If they are calling at 35 WPM, call them at 35 WPM. You can go slower, but do not exceed their speed, as they may be at the top of their capability. If you send back at 45 WPM, you might never work ’em. Sometimes, however, if the pileup is full of speed demons on the key, sending a little more slowly will allow your signal to stand out. Again… experiment.

#8: Be Patient

I mean this in more than one way… it may take a while to work that ATNO, but patience on the mic or key can also pay off. While you are listening, notice if the DX is responding to stations quickly after calling “QRZ” or if there is some “dead” space in there. If there is a delay between “QRZ” and the DX responding, that may indicate that the pileup is all calling at the same time, immediately following the “QRZ”, making it impossible for the DX to discriminate calls; and the DX is waiting for a “laggard” to call them after the main pileup has finished. Be that laggard! Wait 3,4, or 5 seconds and then make your call. You might be the lone voice the DX hears!

#9: Use Proper Phonetics

Many stations like to use their own phonetics “Wally One Finger Licking Good” may sound funny, but when the conditions are marginal, there’s a huge pileup, and the DX’s first language is not English; you might as well hang up the mic. Use proper, recognized phonetics so the DX can understand your call. K0NR has a great document on proper phonetics.

#10: Use the DX Station’s First Language

I have found that using the DX station’s first language can give a 10 dB gain to your signal LOL. So, if you speak German, French, Spanish, or any other language and you find a DX station that speaks that, use it to your advantage!

To “Tail End” or Not?

While not a recommendation (hence no number), I wanted to address “tail ending”. This can be a controversial tactic, but it can also be very effective if done correctly.

Tail-ending is when you throw your callsign out at the very end of someone else’s report to the DX (for example you say “November One Xray Yankee Zulu” as soon as “K5AAA” finishes his report. It goes something like this (K5AAA says: “P5DX, UR 599 in Texas” and you immediately say “November One Xray Yankee Zulu”).

Depending on how quickly the DX responds to K5AAA and how they feel about tail-ending, you might be able to work them by doing this. Some DX do not like that practice and will not respond to “tail-enders”. Best to either see if others are successful with this or don’t do it. I personally do not like this tactic, but it can be effective (especially in contests).

Putting it Into Practice

Before you start using these tips… look back at tip #1. Your ears are your best tool to successfully work DX. Of course, there are times that you simply won’t work a DX station no matter what you do. I had that issue on the very morning I wrote this… 30 minutes of using every trick I know, and I still didn’t work them before their signal faded.

So there you have it… my top 10 list of strategies to be a successful DX’er. As always, your mileage may vary, and others may have a completely different list. Every little trick helps in my opinion. Whatever strategies you choose to employ, just get out there and have fun.

In case you are curious, I have been on both sides of the pileups, working as the DX from a number of locations with very large pileups, as well as working from my home as the DX’er. At home, I rarely run more than 100 watts and have never had more than wire antennas or a vertical… unfortunately no beams have ever graced my yard. Yet, I’ve been successful in working DXCC in a weekend during contests, and have worked DXCC on 5 bands.  I finally have a good 160M antenna up, so maybe I’ll increase my country count there too in 2023!

See you on the bands!

73 de Matt, WE1H

10 Meter Band Opening and Sporadic E to Europe

The 10-Meter band is open today
On Tuesday (May 18 ~10:00 PM EDT) night, I was checking out the bands to see what was happening before beginning operating that night. I usually look at my Panadapter display on 10,15 and 17-meters before I settle down on 20-meters or 40-meters where I expect to see the most activity. I noticed there were some pretty strong signals around 28.385 Mhz and I listened in a bit to the ongoing QSO. Turns out there were 3 people from KY engaged in a round-robin conversation. I thought that if the 10-meter band is open I should try calling CQ myself and I moved up to 28.391 to try my luck. I called one time and one of the guys from 28.385 came up to my frequency and invited me to join in their QSO. That was Bill, he said that he saw my call on his waterfall display and it looked strong to him, so he decided to check me out. I accepted his invitation to join the group and dropped down to their frequency. They were wrapping up an extended informal QSO but were interested in hearing from me from my NH QTH. Everyone had 5/9 signals and it sounded like we were on VHF FM it was so quiet.

KY QSOs
KY QSOs

10-meter openings are unusual for me
I have only been operating on HF for the past 3 years and rarely find the 10-meter band open. I have around 8,700 QSO entries in my logbook and at that point, only 60 were on 10 meters. 23 of those are from the Nashua Area Radio Society’s Sunday HF net. Another 5 are local groundwave QSOs. That leaves around 32 QSOs on 10 meters since May 2018. I did have a few DX calls with Canada, Brazil, and Argentina in the mix, but you can see that activity on the 10-meter band was unusual for me.

My first Trans-Atlantic 10-meter QSO
The next day I put in some serious time doing landscaping projects around the house and after I cleaned up, I had 30 or 40 minutes to play radio before dinner. I made a few calls on 20-meters and was able to talk with S57DX in Slovenia, using only 25 watts. Then I took my usual lap around the bands to see what was happening and saw this on the display for 10-meters. I made a contact with MW0NLG and had a nice long QSO with Malc. He said it was his first trans-Atlantic QSO on 10-meters and I said the same for me.

10 meter Band Opening - Flex Panadapter
Flex Panadapter

I listened in on the other signals and was surprised that they were all from Europe! My Spiderbeam antenna, which has 4 elements on 10-meters, was pointing at 52 degrees from my QSO with S57DX and I was able to hear many strong signals. I found a clear spot on the band and began to call CQ DX. I did not have any results on my first attempt but did get a reply on my second. Someone put me on the cluster at 20:24 and the pile-up began soon after.

AC1EV is Spotted on the DX Cluster

Spotted on the Cluster
Spotted on the Cluster

It was exciting to be able to make so many QSOs into Europe on 10 meters. I could have made more if I adopted a contest mode and just swapped signal reports, but I tried to have at least a short QSO beyond that with everyone. I also didn’t realize how unusual this opening was and when I was called for dinner, I made one last call and then went to eat. I returned after dinner and made another 4 calls before the band closed and it was done. If I experience this again, I will try and stay with the opening. Most of the calls were to Western Europe but a few were much further to the East. Bulgaria is around 4500 miles and Italy is around 4300 miles.

10 meter Band Opening - QRZ Log
QRZ Log

Conclusion
My log shows 26 calls, which is almost as many as in my whole previous ham career, in less than an hour. I had QSOs with 10 different countries, too. There is one more important thing to say about this ham adventure, all of this took place on frequencies available to Technician class license holders. You do not need more than that first license. Many of the stations I contacted were 100 watts or less and on wire antennas, so if you have a license and basic radio, you may be able to do this as well, should you encounter an opening.

Operating conditions
Flex 6400
Spiderbeam with 4 elements on 10-meters @ 35 feet AGL
Elecraft KPA500 amp @ 450 Watts
QTH is on an 80-foot hill towards Europe and that couldn’t hurt a bit.

Sporadic E Definition
Many people smarter than I have written about Sporadic E Propagation. Here is a basic summary from Wikipedia for those unfamiliar with it:

Sporadic E or Es is an unusual form of radio propagation using characteristics of the Earth’s ionosphere. Whereas most forms of skywave propagation use the normal and cyclic ionization properties of the ionosphere’s F region to refract (or “bend”) radio signals back toward the Earth’s surface, sporadic E propagation bounces signals off smaller “clouds” of unusually ionized atmospheric gas in the lower E region (located at altitudes of approx. 90 to 160 km). This occasionally allows for long-distance communication at VHF frequencies not usually well-suited to such communication.

Communication distances of 800–2200 km can occur using a single Es cloud. This variability in distance depends on a number of factors, including cloud height and density. MUF also varies widely, but most commonly falls in the 25 – 150 MHz range, which includes the FM broadcast band (87.5–108 MHz), Band I VHF television (American channels 2-6, Russian channels 1-3, and European channels 2-4, the latter no longer used in Western Europe), CB radio (27 MHz) and the amateur radio 2-meter, 4-meter, 6-meter, and 10-meter bands.

As its name suggests, sporadic E is an abnormal event, but can happen at almost any time; it does, however, display seasonal patterns. Sporadic E activity peaks predictably in the summertime in both hemispheres. In North America, the peak is most noticeable in mid-to-late June, trailing off through late July and into early August. A much smaller peak is seen around the winter solstice. Activity usually begins in mid-December in the southern hemisphere, with the days immediately after Christmas being the most active period. Link to Wikipedia Sporadic E propagation – Wikipedia

Jon, AC1EV

The South African Radio League Web Site and Free Publications

The South African Radio League has an annual Diary of Events (PDF) online.  Between the month-at-a-glance pages, this calendar has information on certificates they administer such as the Worked All ZS award and Worked All Africa award.

South African hams operating outdoors
South African hams operating outdoors
(From the public SARL Youth Facebook page,
https://www.facebook.com/groups/217437211797100)

For a bigger picture, I like their Year-at-a-Glance (PDF) calendar, for A3 paper (11.75″ x 16.5″).  (I’ve already suggested that the ARRL take a look at it and consider offering one too.)

South African hams operating outdoors
South African hams operating outdoors
(From the public SARL Youth Facebook page,
https://www.facebook.com/groups/217437211797100)

The South African Parks on the Air program looks interesting since it includes Flora and Fauna not seen in the wild anyplace near our W1 area!

Their HF Happenings (and other DX news) newsletter is downloadable and includes African IOTA information.

South African hams operating outdoors
South African hams during a SOTA activation
Cover of September/October 2014 issue of Radio ZS
(From the public SARL Youth Facebook page,
https://www.facebook.com/groups/217437211797100)

In response to the pandemic, they made the April 2020 issue of their magazine free to everyone.  (Apparently, some other societies have done the same, so if you find one, please post a link to it!)  This issue includes an adapter to use a Baofang radio as a ‘fox’, the design for the audio part of a direct-conversion receiver (SDR), information about an amateur radio exhibit they put up at a public exhibit of hobbies of all sorts, and other projects.

Don’t worry about being able to read the articles, everything I looked at was in English, with some columns also in Afrikaans.  I found it very interesting!

As you can tell from the pictures above, they also have a public Facebook pagefor members of the SARL (South African Radio League) and amateur radio enthusiasts under the age of 25“.

Aron, W1AKI

Radio Amateurs Developing Skills Worldwide