SFI > 250 or bust!

Uncategorized

Everything ON5ZO / OQ5M has to ventilate about ham radio.

1 2 3 53

You might be a ham for too long if you keep looking for the name of a Polish sausage when doing a crossword puzzle. That has to be kielbasa right? Only that has one letter too many. Gee I only now one Polish sausage, and that’s kielbasa. The more I filled in the other empty grids, the more the sausage resembled the word chorizo. But that is a Spanish sausage. The word was described as ‘Sp. Sausage’.

Then it hit me. Sp is short for Spanish. Not SP for Poland. Too long in the game…

A message about a contest that ran three weeks ago. How much overdue can you possibly be?

The CW part of the UBA DX contests is quite popular. As are most CW contests. So I wanted to take part in it. I have done it full time (24h) a few times but my guess was that it wouldn’t pay off this year. After all people end up on the lower bands much earlier because the higher bands dropped out. The result is that the low bands run dry much sooner. So that is why this year I ran in the 12h category. Like I usually do.

As predicted: ten meters was closed. Really closed as no skimmer RX picked me up when I launched a few CQ CQ. Except for two locals but that doesn’t count. Fifteen was slightly better than I anticipated. Which seems only normal. I don’t expect much anymore of that band. Yes the glory days are behind us. Nothing we can do except wait wait wait…

I can’t remember much anymore. No details but it was fun and in the end I logged more than 900 contacts. Which will probably yield another plaque in the 12h high power category. At least judging from the claimed scores.

It’s been a long time since my last post here. It’s been a long time that I actually made a contact. ARRL DX is a fun contest and it’s always nice to work USA regardless the band and mode so I decided to play. Nothing serious, just for fun.

I was a bit disappointed by the poor conditions on 160. Caribbean stations were quite loud but of no use in this contest. Late December and early January were pretty good from here to the East Coast and even deeper into the country. But this time signals were weak. Also on 40. The big guns didn’t rock the S-meter as they normally do. I was quite pleased with how 80 played. Fifteen was not good but I thought it would have been worse so I was glad to work a few states beyond the 6000 km range there. There was nothing to be heard on ten meters. Down and out with 28 MHz I guess. That leaves twenty meters as the ‘money band’. But openings are not that strong anymore and the path between the West Coast and here is definitely shorter that a few years ago. C’est la vie.

I was glad to work John K3WWP again. I have been following his QRP adventures for a loooooong time. More than fifteen years, possible more. At first I heard someone calling but it was a weak signal. The K3 prefix, the QRP-feel of the signal and the persistence to keep calling lead me to believe it had to be K3WWP. Bingo. Sure enough John mentioned our contest contact.

I took a break on Sunday evening when twenty faded. My plan was to return for the last hour of the contest to run 40. But I fell asleep and didn’t bother to return to the shack. I ended up with just over 1200 contacts. I didn’t operate much because I wasn’t in a competitive mode. But it was fun when I was around.

Not much more to say. Just quoting myself from last year’s write-up:

It has now become clear that no spot means no rate. Period. People just hop from spot to spot. Many times I called CQ for a few minutes without answer. At last someone finally worked and spotted me, and then you work a few dozen stations in a few minutes until the effect wears out. Then it’s slow again until the next spot.

The new year continues to bring some low band fun. On several occasions I heard nice signals from the US of A on Top Band and I worked quite a few. Two new states on 160: Utah and Missouri. Maybe more but I didn’t keep track. I’ll find out when I upload to LotW.

The direct QSL cards are coming in already and I received a few emails too for QSL cards and LotW uploads. Strange, because each morning there are at least two other Belgians on 80/160. Let’s hope that the conditions like I experienced a few times over the past two weeks will return in the upcoming contests. ARRL DX CW could give 160 WAS as serious boost.

Again I worked a few dozen JA on 30 which might soon initiate a steady flow of direct QSL request from Japan. I could have tried 30m for USA but that is late at night, before their bedtime. I chose to go to bed in time myself and get up early. I shouldn’t end the holidays more tired than I was when they started.

One morning the amp showed much reflected power on 80. How could that be? SWR had risen to 1.9:1 where it was 1.2:1. Although Top Band shares the feed point, it was not affected. As it turned out the 2.5mm² copper wire and the radials turned into a pencil sized popsicle. The ice had detuned the antenna. When the sun was up I lowered the wire and pulled it back up. The ice cracked and some pieces fell on my head. I took a broom and walked along the elevated radials to remove the ice. Antenna back to normal. Later that day bigger chunks of ice fell off the yagi and 40m dipole. Those pieces were bigger and made more noise as they hit the frozen lawn.

There was another technical issue. I put up a 30m vertical dipole that is rather close to the shack. Usually I use a horizontal dipole farther away. Whenever I keyed the rig, the WAN connection dropped. This is not a biggie. During for the short while I’m running 30m I can do without internet and all its applications. But there are other people in the house who like to read their mails and surf the web after breakfast. I have used this antenna in the past but I have replaced the router / Wi-Fi access point a few months ago. At first I didn’t blame this device. Since the LAN part of the network was working fine and the router told me that ‘WAN cable was not attached’, I suspected a problem with the TV coax cable or the cable modem. I tried google to find a link between cable access and 10 MHz but I didn’t find any.

One dit and the WAN link dropped, and a LED on the modem went out. It took half a minute to recover. One morning I took the effort to actually check the purpose of the LED on the modem that went out as soon as I touched the paddles. It was in fact the LED that indicates whether the modem is connected to an Ethernet device. Or if the UTP cable was plugged in or not. Hmm. I took a few clamp-on ferrites and choked the DC power lead and the UTP cable coming from the modem. I placed the ferrites as close to the router as possible. That cured it. I could now crank up the power to a full kilowatt and still the WAN link wouldn’t drop. Before even 100W broke the connection. This box with two dozen ferrite clamps has served me well over the years. Another legacy from my days as a broadcast tech. I can tell you that the box doesn’t contain two dozen clamps anymore. Many are in use in the shack to cure RFI problems. With success!

Three things I remember from almost four weeks of having fun on the low bands:

  • I’m addicted to the RX loops. They really help. Maybe two or three QSO could not have been made without it, but it sure made the other contacts much easier.
  • Top Band propagation has been more than OK lately. To my standard that translates to: working into USA almost daily. Everything better is a treat. Like the HP1 and P4 as new countries. I hope these conditions stay during the coming contests. Especially CQ 160 and ARRL DX CW. Asking for improved propagation might jinx it.
  • On many occasions the RBN shows that the bands are open for DX. Yet there is no one active. Or at least nobody capable of and willing to transmit. This is especially true on weekdays. Weekends are better.

Since the holidays are over, I took down the antennas and lowered the tower. I feel that I was becoming too hooked on the bands again. So I might overdo it. Cold turkey for three weeks until the UBA SSB and CQ 160 CW contests.

A new year is just an arbitrary transition. So I picked up my 2017 HF activities where I left them in 2016. That is: on 160, 80 and 30m. I hang out on the other bands more than enough already in the contests. And for the low bands, I need the antenna tower cranked up. Which is the case now. I’m having holidays and there is no wind. I’m not active during the day though. Mostly too early in the morning when I wake up and my housemates are still asleep. I don’t set an alarm but my biological maybe-there-is-DX-on-the-low-bands-bell rings. Sometimes I try the bands late at night before going to bed. I like this pattern this time of the year. And in this stage of the solar cycle. I did set my alarm once this week. For a sked with my long time pen-pal (mail-pal) W1EBI. He recently renewed his 160 antenna and Top Band turns out to be a slot that we haven’t worked each other. He’s in my log 152 times already and this QSO on one sixty is #153. I got up early and he stayed up late.

I’m not particularly keen on 160. It’s a tough band. Propagation is spotty and when the RF is able to travel to some DX place you need good antennas to effectively get it there. And even then signals are not strong and the other side also needs good stuff to get the job done. I know that some low band literature calls operating the higher bands ‘like shooting fish in a barrel’. But I like to be sure I will eat and not bait the line in vain to catch nothing in the end.

But I also like to do something I don’t do too often. So I hang out on 160 for a while. And I worked quite some DX there. The year started good with a new one Top Band: HP1XT as QSO number two for 2017. I kept thinking: why does that Polish guy send a dit too much? But it was indeed HP for a new DXCC. Later on I worked P49X. I thought I had a P4 from working all these contests but LotW says no. So that makes two new countries on 160. W00t!

I worked some more Americans too. The problem is that most sane people are in bed so I don’t work too many. Shooting fish in a barrel during the day on 10m with SFI = 150 is more productive. Ain’t gonna happen soon. So I worked an new state on 160. AA7A brought me AZ. I didn’t keep track so maybe there are more new states for 160 WAS. I’m at 34/50 now. But I’m not chasing the WAS 160 award. Just like on 80, KH6 and KL7 will be virtually impossible. I heard a KH6 on 80 once. In an ARRL DX CW contest. Just my luck. WAS 80m is now at 45/50. This week I worked K7CF on 3.5 MHz. He’s in Idaho. Yet another new state. And it’s getting better. Five minutes ago I discovered that I recently worked Kansas for another new one on 160m: KU1CW in the Stew Perry contest. So it’s safe to say that the low band propagation is seriously picking up. And that my modest stuff works for modest DX.

That also leads to some frustration. Every day my signals are picked up by RBN skimmer receivers in remote places. Yet no one comes back to my CQ. I have mentioned it in a previous post: it seems to me that activity during the week is declining in favor of the contest weekends. Two days ago the propagation on Top Band was really good to the USA. Yet it were the same four Americans who were spotting the same dozen Europeans for two hours on end. If that kind of conditions had been present in a major contest, we would all feast on the low bands multipliers. I admit that I’m guilty too. I don’t have to work for two weeks and I’m on the bands. But as of next week, my activities will yet again be limited to the contests.

Below is an RBN map of this week. Time is just after my sunrise  which is 7.40 utc or so. Normally a PJ2 and KP3 skimmer pick me up too but not at the time of grabbing the image. At my sunset, VK4CT copies me too. But not while he’s in daylight. Anyway it doesn’t happen too often that I’m heard in ZL on 3.5 MHz.

Image from www.reversebeacon.net

But then this passes on the spotting network:

Image from www.dxsummit.fi

I heard that someone was calling me. Presumably this one. But I couldn’t even make up a single letter or number. This has been a problem from the beginning with this antenna. I’m better heard than I can hear myself. Alligator. I could pinch off 3dB of the transmit power. Maybe the other side was QRP? I put up the RX antennas. It didn’t help for this one. Miracle antennas – do they exist?

Yet another year has passed. A year that started bad for the hobby and the OM. Storms, lightning, a general lack of interest and energy for the hobby. A ‘been there, done that’ feeling. All this made for little activity the first half of 2016. Luckily the tide turned and I found a renewed interest in the hobby by not setting goals except for having fun. And from July on, there has not been any interference from the weather either.

The QSO count for 2016 is on the low side. Even lower that I estimated. The reason is that I didn’t do much before July. I also didn’t do all band efforts CQ WW (more than 8000 QSO in 2014), and I skipped WPX and ARRL. These contests usually provide a few thousand contacts too.

The breakdown by band clearly shows the decline of the solar cycle. Look at the 10/12m numbers. But then again: almost 600 QSO more on 30m than in 2015. That is a clear sign of ON5ZO having fun as a casual DXer. This is also reflected by the huge number of contacts on 50 MHz. A 600% increase compared to 2015.

The breakdown by mode is not worthy of its own image. Telegraphy still the way to go: 74.33% of my activity is CW. I made 215 RTTY contacts in 2016. That’s a lot if you know that I only made 270 RTTY contacts between 2010 and 2015, with two years of zero RY QSO. Again a sign of me just hanging out making some noise on the bands.

I made at least one QSO on 52 different days.

The last QSO of 2016 was ZL3NB on 30m. Nice DX on my favorite band. What will 2017 be like? It started out great with a new one on Top Band…

The weekend of December 10th I finally put up a second loop to compare to the short beverage. For this I made a third 9:1 transformer and provided a 450Ω termination. The loop hangs on the ‘auxiliary tower’ and favors USA just like the beverage. Once again one of my boys lent me a hand. It was the impatient one. “Here son, hold these ends up for me.” While I was marking the middle of the wire to serve as the loop’s apex, he decided that it took too long and that the wire could be used for rope skipping.

To do a real time A/B comparison I needed a switching system. My first thought was to use my old A/B switching relay. The one I used before 2011 to switch the sloping dipoles for 40m. The problem was I needed to make a new interface to do the switching and provide DC power from the shack to the relay. But then I got another idea. Why not simply use the stackmatch? That one has A/A+B/B switching capability and I had a button box with the necessary cabling. Yes I have a stackmatch. Only used once though. Back when I was still ambitious.

That weekend I did some 160m SWLing. I heard three Belgians call CQ on Top Band and get answered by many Americans. It was soon clear that in all cases except one, the loop had a better S/N than the beverage. Only one station was louder on the beverage but still too weak to copy. On a few occasions I could copy the W station right away when the ON I was SWLing upon had troubles hearing him. Or maybe I’m just better at taking calls in CW. Anyway the loop is a keeper. Furthermore it doesn’t need a coax running over the front lawn and the driveway.

I did some more SWLing the day after. Again two of the same Belgians were working USA. I was limited to SWLing because the TX antennas were down. Since the WX forecast didn’t show any significant wind speeds, I decided to crank the tower up to the max and pull up the 80/160m vertical wires. I have a calm period at work with some free time so why not do some low band DXing? Standing by as an SWL is not for me. I want action.

Of course I didn’t work many Americans. Not because of bad propagation: a few east coast skimmers picked me up. Simply because the bands are virtually empty on weekdays. I admit that most if not all of my operating is done in the weekend contests. It seems that more and more people limit their radio activity to the weekends. By this time I had connected the JA/ZL loop to the stackmatch. So I can now listen to both loops at once and select A or B alone. This helps on all bands from 160 to 30m. I haven‘t tried the other bands since my yagi is OK and I’m not interested in the regular bands outside the contests.

On a few occasions the morning path to JA provided a bunch of contacts from the land of the rising sun. My sunrise and their sunset more or less match and it’s a path that works best from 07.30 to 08.15 utc. Because the pulleys and support masts were in use for the 80m and 160m wires, I had to take down the WARC wire dipole. I put up a monoband 30m dipole as a vertical dipole. Top about 18m high and the bottom about 3m above the ground. It helps to have a whole range of antennas coiled up in a box.

Then came the next weekend. My initial plan was to participate in the 9ACW contest. But even though I had marked this on the calendar, the XYL managed to schedule a social event on Sunday. The good thing was that this weekend also had the Stew Perry contest. With the tower and the low band antennas up, I decided to play in Stew Perry and do some SB80 in the Croatian CW contest. Nothing serious. The goas was to fill the log with as much DX as possible.

Stew Perry rules stipulate that cluster assistance is  a no-no so I decided to submit a checklog. While a noble effort to keep this an old skool contest, I find it a bit naïve. Over here everyone uses the cluster and people just submit the log. Maybe just a few people deliberately cheat by using spotting assistance and claiming unassisted. But the vast majority doesn’t read rules, doesn’t care, and just submits unassisted anyway. Mainly because the default setting in the logging soft says ‘unassisted’. As I’m typing this, the preliminary results are out and I managed to be the best DX for AA1K. My best DX is K0RF who is 7851 kilometer away from here.

Saturday afternoon only brought me EU on 160m. There were one or two spots for JA stations but I didn’t hear them. A44A was loud, and possibly a new DXCC for me on 160 but kept CQing in everyone’s face. Late in the evening P4/DL6RAI was loud. But he kept calling CQ and he didn’t reply to any of the callers from around here. Strange and most of all too bad for the DXer in me. I also worked a few Americans. Those closest to EU of course while their sun was setting. But it wasn’t much and the signals were not what I heard while SWLing the week before. I made a quick 80m run in the 9A CW test and then went to bed. The plan was to get up early and try 160 again.

The morning offered much more Americans and they were much louder. Groovy! I could not log stations deep into the continent. The usual W1-2-3-4. The odd Texan. I worked K0RF at 06.54 and at 08.02 I logged NP2X for my last DX. I quit a few minutes later because the band died. That Sunday morning didn’t provide any new contacts on 80 in the 9ACW contest. I made a dozen QSO on the other bands just to hand out points to the signals I heard on the 21 and 28 MHz bands. UR3GU asked for a QSY to 160 which I was glad to do.

There had been a problem when I was using the K3’s second receiver with the JA/ZL loop on 80m. The internal relay started rattling. That is a problem I discovered and solved a few years back. But it returned. To make a long story short: the DMM showed the relay wasn’t activated when it should have been. One of the solder connections had come loose, presumably because of insufficient strain relief on the PTT cable. A touch with the soldering iron and all was fine again.

That’s typically me: I make something conceptual, as a quick prototype, to see if it works and whether it solves my problem. Then I get ecstatic when it does but the temporary ‘proof of concept’ prototype is never replaced by a decent thing. I now added a few wraps of electrical tape as strain relief. That should keep it going for another few years.

While I was troubleshooting the device, I started philosophizing. The first thought was: why didn’t I draw a schematic of this when I made it? I’m pretty sure I drew one, but it got lost or thrown away. It’s not a complex thing but I route the 13.8V in an unconventional way from the PSU to the PTT back to  the relay in order to save a plug and not having to drill an extra hole in the little box. And now I forgot which wire went where so it took me five minutes to reverse engineer my own device. I was looking for a small LM7805 regulator TO-92 style on the small perf board PCB. The reed relay is 5V and the PSU gives 13.8 V. As it turns out, I didn’t use the regulator but a combination of resistors to make a voltage divider with the relay. A schematic would have shown this right away. Then my mind took a leap to the next thought. An ode to the joy of basic electronics. Twenty years ago I was studying electronics. Time sure flies. It were the only three years between kindergarten and a higher education degree that I actually liked going to school. The fun of learning things, understanding them and putting them to use. Ohms law. Basic analog circuits. Once again I used these skills to solve a problem. And I probably would never have become a ham radio nutcase with another degree.

While screwing the lid back on, my thoughts landed. How can you enjoy ham radio to the max without basic knowledge of electronics? I’m not talking complex RF design or crazy VHDL stuff. Just the basics. I would never have understood the Elecraft note about the rattling relay in the subreceiver. I would never have been able to come up with a simple solution, order the right parts and do the basic engineering. Which is a far too expensive word for this relay gizmo. How much current will the relay draw? Is that within PTT specs? What resistors do I need to put in parallel and series to get the voltage down from 13.8V to 5V? Won’t these resistors become too hot? How to use the DMM to track down problems? You don’t need to know it all per se, certainly if your social network (the real one, not the fake cyber one) counts some tinkerers. But I can’t detach electronics from ham radio. With the lid back on the aluminum die cast box and all cables connected, it was time to spray some RF in the ether.

Apart from trying to work DX on 160 I mainly hung out on 10.1 MHz. I like the predictable paths. JA in the morning with some ZL/VK in the mix. I haven’t tried the long path W6/W7 long path opening in the evening this year. With a single element fixed antenna, I cannot focus on any path but it is a long path opening. Too early for the east coast as it’s still broad daylight there. But it is sunrise on the west coast. But 30m is a crazy band that redicules the laws of propagation. I worked a ZL and two JA at 11 utc last week. That is my local noon! With a few hundred watts and a simple vertical dipole. And an RX loop, it helps. I’ve said it before and I’ll say it again: 10.1 MHz is the best and easiest band to work DX. If you care to learn CW.

I’m typing this on Christmas day. Earlier this week, the forecast predicted a storm for the north sea and heavy gusts for the inland. I decided to be safe and lowered the tower on Thursday. It was all the way up and loaded with wires for 80/160/30. I didn’t have the time to be in the shack – closing the schoolyear’s first trimester and family obligations of the season. That means I didn’t do the RAEM contest this year. Too bad for me as it’s one of my favorite events. The WX forecast is set to calm again and my holidays have yet to start so I might as well crank up the tower again and work some DX. I hope the holidays will draw some more hams into their shacks. I already said that many times far away skimmers pick up my signals yet no one answers my CQ. I am part of the problem: I’m not active on weekdays either. But it’s a shame that my 80m signal is audible in VK, ZL, JA, USA and Central America but I only get called by a few Europeans. Though it’s hard to be part of the solution. On weekdays I too am kept hostage by agendas, time tables and schedules. And to survive this, I need to be in bed when the other side of the globe is calling CQ…

Dolly Parton may be working nine to five, I work from nine down to almost one.

It’s time to give the short beverage another try. Two years ago I put up a copper wire along the fence. Lucky for a change: the fence runs from SE to NW. So the beverage antenna is pointing straight to the USA and upper Caribbean. I used that as an unterminated beverage antenna with an improvised 9:1 transformer. The wire comes from a broken current transformer that I partially unwound. Total length is about ninety meter. Too short for a textbook beverage but anything could be better than nothing.

Last year I didn’t use this RX antenna. I used the commercial active RX loop instead. This past summer I had success with my mono-directional terminated single K9AY style loop. I cannot put up a real K9AY RX array since it’s position would be far from optimal with respect to various obstacles and (not) being in the clear. I need to stay in a 2D plane. So two separate loops could be an option: one for USA and another for the Far East. Or point the loop to the north-east and put the USA beverage back into service. But then I need another 9:1 transformer.

More than four years ago I ordered a batch of parts for a project I haven’t even started. But I ordered a bunch of binocular cores along. We call ‘m pigs snout or pig’s nose core in Dutch. I wound a classic 9 turns – 3 turns transformer to obtain the 9:1 ratio. Actually it may have been ten turns on the hi-Z side. Winding toroids… I have a love-hate relationship with small coils since I was studying RF electronics and doing measurements on self-made Hartley oscillators. Don’t ask.

Finally time to install the software that came with the AA-54 analyzer. I like this device but I have yet to learn how to use all it’s possibilities. I have never used the software before and skipped the RTFM part.

Below is the SWR graph when loaded with a 470 ohm carbon resistor. Looks OK to me. I didn’t cut the resistor’s leads and this isn’t really a low inductance resistor type so it might actually be better. But for a simple RX antenna transformer, it should do just fine. Assuming the beverage impedance is in the 470 ohm range. I actually should measure first then wind accordingly but this transformer might end up in a K9AY loop anyway.

First I will put up the loop and the beverage at the same time towards the USA and do a real time A/B comparison. If the beverage does as well, it’s a keeper. Because it doesn’t consume any real estate. I don’t dare to hope it will outperform the loop. In that case, I simply will have to put up another improvised beverage to Japan. It never ends, it never ends…

Actually, I have used the beverage in the CQ WW CW SB80 category. I didn’t do an A/B test (yet) because many things interfered with my free time before the contest. And I relocated the loop when setting up for this contest.

I’m under the impression that the loop performs better than the beverage. I have no data and numbers to prove this. It’s a feeling. The beverage wire is not in the clear but above plasticized fence wire or rusted barb wire. It seems that it offers less signal and more noise. Maybe it would help to terminate it, but then it would favor the long path because the coax is attached on the western end of the wire.

I always get a kick when theory matches experimental evidence. There certainly is noticeable directivity between the beverage running East-West (USA) and the loop that’s NE-SW (JA/ZL). DL is at 83° from here. When going from the loop to the beverage, the German signals becomes stronger but the noise too.

In the contest I noticed that signals from Africa (z33 and deeper) were strong. Later I discovered that I had the loop reversed with respect to the terminating resistor. So in fact it was favoring Africa and not Japan. My bad. I fixed that after the contest.

I’m typing this ten days after the contest. In the mean time I have made about hundred fifty contacts on 30m (10.1 MHz). In a few cases the loop was the difference between making and not making a QSO. On moderate signals from moderate DX, there is a difference between the loop and the short beverage. Both are perpendicular to each other. Still the beverage is noisier than the loop. So sometimes even if it’s not in the right direction, the loop offers better S/N.

I also did some Top Band SWLing last weekend in the ARRL 160m contest. I actually could hear a handful of Americans on the beverage and the loop. No comparison with the TX antenna since it’s currently not up. I am making another 9:1 transformer and have put up another loop wire. So the plan is to do a decisive A/B real time comparison soon in order to determine if a loop is better than the short beverage if both are ‘pointing’ to the same direction. I’m discovering unexplored  territory here.

SB80(A) again for the same reasons.

I repeat: the high bands not interesting and the operator not in shape for 40+ hours of SOAB. You want to stay clear from 160 so it’s between 80 and 40. I do well to very well on 40 but 80 is a challenge. If it goes bad, you can pull the ‘tough band’ card. If it’s a success the reward is so much bigger. I just wanted to know what could be done on 80 and it would be nice to compare the CW part to the SSB part. If any comparison is needed.

The sun seemed quiet in the week leading to the contest weekend. Tuesday or so ON3DI told me that the solar forecast predicted troubles for the end of the week. The forecast and ON3DI’s fear became a reality. Not much we can do. Fortunately the WX was supposed to be dead calm after last week’s storm.

A few rough days

I must admit that the days before the contest were all but beneficial for the mental and physical condition of the contest operator. I don’t talk about my personal and family life here but I’ll break that rule for once. The week before the contest some apprentice driver bumped into the family’s only car. No human damage except some bruises to the driver (XYL) but the car was declared total loss. Dealing with tow company, insurance, rental car firm, car dealer and the likes was stressful. As if an accident of this magnitude isn’t bad enough. So it comes as no surprise that this situation had been nibbling on my energy levels. Heck, it bit off huge chunks during these past days.

My usual Wednesday off was spent putting the RX loop back up and hooking up the new 9:1 transformer and a coax to the short beverage. This little project gets a dedicated post soon. The loop is for JA/ZL and the beverage runs along the USA short-long path axis.  The weather was really nice. That always makes me happy. And being outside in lovely weather doing various jobs charges my batteries. At dusk my youngest son decided to help me with the beverage while the oldest joined my wife to pick up the new (second hand) car we bought. We were /M again.

The car issue combined with a tough week at the office, made me feel tired and I even felt slightly ill. I still had to put the tower and 80m wire up for the contest. I planned to do that on Friday. It was Black Friday indeed. By 8.30 AM I had brought the XYL to the train station and the kids to school and upon my return I found the kitchen floor flooded. I don’t want to turn this into a plumber’s blog so long story cut short: problem with the water boiler on the first floor. Water downstairs, boiler upstairs. Get it? I’m sure I have never run up the stairs so fast in the fourteen years that we own the house. The recovery, the cleaning and the fix took about two hours, including a quick rush to the local DYI for replacement parts. This too really took a lot of my energy and added to the already elevated stress level.

I decided to crank up the tower now and pull up the 80m wire. That went without a problem, as usual. A quick test in the shack showed that everything was working, including the RX loop and the beverage. That restored my confidence. I had a biscuit for lunch and took a shower. Technically it was all systems go for CQ WW CW. I had a couple of hours to spare and the plan was to rest and hopefully get some pre-contest sleep.

I landed into the couch and then the ‘you cannot have too many antennas’ adage started spinning through my head. I had two switched RX antennas on the K3’s AUX RF input. I use these for diversity reception with the 2nd RX. But I still had the plain RX input free. And a freed up coax from garage to shack. Input free + coax available = extra antenna possibility. Instead of resting the adrenaline kicked in and I went into the garden to deploy the DoG. The Dipole on Ground. Don’t ask why but I decided not to throw the antenna on the ground. The dipole leg connected to the ‘hot side’ was guided through the low fruit trees about 120 to 150 centimeters high. The wire connected to the coax shield was put on the ground running underneath this wire. I didn’t actually expect miracles from this. It was more a way to use really every input and option on the transceiver.

The rest of Friday was spent running errands, dining with the family and watching TV while counting down. I even tried some sleeping. I was up and early in the shack and I even made a few contacts.

The contest

The K-index was way too high, just like in the SSB part. I was having second thoughts about SB80. Wouldn’t SB40 be better? It has been my best band in CQ WW CW. High rates and plenty multipliers. And 40 CW is fun as opposed to SSB. I was still weighting pros and cons five minutes before the contest. But I stuck to the original plan. I wanted to see what I could squeeze out of my limited 80m setup. So SB80 it is. My 2014 record hour was low in the band on 3505 so I settled there. Soon the rate exploded and I hoped to break the record of 210/hr. That of course was with SO2R and a bunch of interlaced 40m contests. I was SB80 now. In the end I logged 198 QSO after one hour and made over 600 contacts in the first four hours. I was pretty pleased despite not setting a new rate record. I was deeply disappointed about the number of American stations in the log. And those who did call, were weak. If W3LPL or K3LR is only S5 here on any band except 160, I know that propagation is worthless. Still I was thrilled to work ZM4T way past my sunrise on Saturday. I worked another ZL at my sunset and another two at Sunday’s sunrise. Despite the propagation. Saturday’s sunset brought another nice surprise: VK6LW. How cool is that? I missed a PY in SSB but quite soon logged one in CW. I was hoping for a LU and a JA for a double mult. I did work a few JA Sunday evening but never heard a LU or saw one spotted on 80. Bummer.

At one point Sunday morning things became all too slow. Combined with the lack of sleep I decided to get two hours of bed time. I was active again early before my sunrise but truth be told it wasn’t spectacular. Even though the K value dropped to three or even two, the band didn’t recover this fast. I tried and tried to score multipliers but it wasn’t easy. My guess was that many people found 80m to be poor and went up to 40 or even 20. After sunrise I quit.

I gave some points to the DXpeditions on 40-20-15. Gosh 15 was poor. And ten was empty apart from one or two signals. Just two years ago these two bands were jam-packed until well after my sunset. For fun I tried 40 long path to z3 around my sunset. Long path propagation because I can’t select a direction with my dipole. I only worked two but it was fun to hear their signals come up as the greyline terminator closed in. I then tired 80 again in the hope to reach 100 country multipliers. After all the Far East still had plenty potential. But it wasn’t to be. There were spots for two Chinese stations but they were weak, didn’t seem to hear well and the EU zoo was open again.

Later on I got called by a JA for a double mult. You finally work one, then more follow. I normally don’t do this but I watched the 80m RBN in search of a few mults. It’s allowed when being in the assisted class, but I don’t see the point most of the time. It helped now: BV1EL appeared and was not yet spotted. Once again the proof what I have been saying: once a rare on is spotted on the cluster, it’s game over if you’re not willing to spend a long time in the EU mess. But he wasn’t spotted so it didn’t take long to have him in the log. I worked a few other multis (JT, 8Q and 6Y) and then the contest was over.

I’m quite happy with the result given the state of the ionosphere and my simple antenna. Of course when the scores on 3830 come in… How can I compete with yagis on a tower that is over a half wavelength high and 4SQ arrays? And possibly 3 to 5dB more RF power. So I’m just in it for the fun. Next year: SB40?

First storm of the season

“ When the barometer indicates a storm, lamenting becomes the norm ” – ON5ZO

Last weekend my plan was to raise the tower and participate in the LZ DX contest. For the second year in a row I had to cancel this plan. A few days before the weekend, the forecast indicated a nasty storm on Sunday morning. Not cranking up the tower then. And there is no fun in playing while being crippled antenna-wise. It was indeed a storm. One of my neighbors is missing a big chunk of Styrofoam. I don’t know who but feel free to come and get it. Monday we saw a big trampoline upside down in the middle of a field! Someone must be missing one trampoline.

One particular gust around noon on Sunday blew away the covers of my compost bins. Including the weights I had put on top. This gust probably is to blame for the yagi to have moved again. Just like last year. The boom-to-mast clamp needs a makeover. I really should address that. I tilted the tower over earlier this week and yanked the boom to align the antenna with the rotator controller and to have the driven element parallel again to the 40m dipole. So obviously  the clamp isn’t too tight anymore. I know why and how to fix it, but I need a scaffold to reach it.

The good thing is that my homebrew tilt over mast didn’t move an inch. Not even a millimeter. I designed the thing to put it horizontal in case of storms like the one announced but I didn’t even bother. I admit I wasn’t too comfortable and regularly checked how it held up. But it seems I did a good engineering job and my welding skills passed the ‘medium storm’ test.

The wireless hobby is a lie!

Wireless hobby? Yeah right! You should see my garage, the hub of all things cable here at ON5ZO. And behind and below the operating desk. When I got my VHF-only license I persuaded my dad to drill a hole from my bedroom to the attic to route one simple coax through it. My co-worker at the time (ON4BCB) chuckled: ‘Only one hole? You’ll soon find it to be insufficient’. How right he was. As soon as I got my HF-license, more holes had to be drilled for more antennas. One extra hole to bring the antenna count to two actually.

The same happened here in my own QTH. One of the first things we did while renovating, months before we moved in, was to make a hole in the wall with a big PVC pipe through it. One simple coax went out the shack through the pipe and into the garden. No wait, as I type this I remember: there was no pipe yet at that time. Just a hole. The coax bungled against the wall and ran over the ground. I put up a 10m fishing pole with a vertical wire and a bunch of radials. I used a SG-230 SmartTuner and ran an extension cord through an open window to feed it. It was the EU Sprint Spring SSB 2003. I was so glad to finally have my own QTH and had big plans and big dreams. The plans got executed, even more than I dared to think of back then. The dreams are gone because simply not feasible. I just looked up this contest on 3830. Zeppos passed away last June. Just like the EU Sprint contest itself: nothing is forever…

Back to the cables. Over the last fourteen years I probably spent the most time on cable and wires. In the air, underground, in trees, on the wall, in a conduit: EVERYWHERE. By now the plastic pipe from the shack to the garage is half full. Four coax runs, three general purpose 12-wire cables and the big rotator cable. For years I used one of the coaxes to bring the dedicated RF earth into the shack. Don’t ask. But now I wanted to put this one to use for more RX antenna options. So I added two big green-yellow earthing wires and a stretch of RG-58 coax. More cables. And a few days ago I found myself making cable jumpers to match a variety of plugs (PL, N, BNC). I find my own jumpers more reliable and often cheaper than off the shelf adapters. And I hooked up a new control cable for an antenna switching job. Lots of cable and wire. Wireless hobby? Think not.

QRM from LED lights

A few weeks ago I installed a motion detector to switch my homebrew light cart. I want to illuminate the garden and the terrace when going outside in the dark. I bought a set of cheap no brand LED floodlights. Yesterday I was SWL’ing to test a new low band RX setup and I discovered that these lamps completely wipe out the bands. The QRM is gone from the second the lights turn off. Quite shocking. It sounds EXACTLY like the QRM that bothered me two years ago. Only then it wasn’t my stuff. The good thing is that I can just pull the plug of these LED lights whenever I’m in the shack. The VERY BAD news is that if everyone starts putting up this shit, I’m knee deep into Shit Creek. New item on the to do list: buy a more expensive LED light from a known manufacturer and see if that makes any difference. Question is: what brand should / could be trusted not to pollute the bands? I wonder if there are any test reports on the matter. This one is worth noting: Eliminating radio interference (QRM) from LED (flood) lights by ON7EQ.

1 2 3 53