Showing posts with label CW. Show all posts
Showing posts with label CW. Show all posts

Monday, December 12, 2011

Post-post Thanksgiving Leftover Leftovers

As I mentioned in my last posting, I've still got a few items leftover from Thanksgiving. Unlike the leftover turkey and trimmings, these didn't have to be tossed out after a couple of weeks, so they are still relatively fresh.

Going back to the CQ WorldWide DX Contest, I did have a few more comments to make. First I really learned to make use of the attenuator on my radio. When conditions are good, stations that are slightly off frequency can make it hard to hear the stations that you're trying to work. By using the attenuator, it brings down the level of those signals so that I can more clearly hear the station that I'm trying to work. The station I'm trying to work is weaker too, but usually they drop less than the off-frequency station and it makes it possible to better copy what they are sending. This isn't something that I alone have just magically discovered, it's just been a while since conditions were good enough that off-frequency stations were so strong that I needed to get them dropped down.

And now, time to jump on my soapbox to talk about two things. The first of these I haven't seen mentioned much recently in blogs or the contesting lists, but I noticed a number of times where a stations was calling CQ at a relatively slow speed (for a contest), perhaps 18 to 20 words per minute. I was always taught that you should always answer a station no faster than the station is calling, with the idea that you should only call CQ at a speed at which you are comfortable receiving. Why then do stations respond to those "slow" (which is a relative term here) CQs at 30, 35, or even 40 words per minute? I heard this a number of times, and while in some cases the slower station seemed to have no trouble copying the other station, in most other cases the slower station had to repeatedly ask for "fills" (meaning they couldn't copy the exchange being sent.) If the other stations were too impatient to wait, they should find another station to work. When I work a CW contest, I have the ability to easily adjust my sending speed (I send using the computer, and it's very easy to adjust my speed up and down in real time) and I have a hard time believing that some of these speed demons can't do the same.

The second soapbox item is one that has been talked about a lot recently, which is regarding stations that do not ID frequently. For those readers who aren't familiar with this, here's the background: The FCC (and their equivalent in other countries) require stations to identify at certain intervals. In the US, you're required to ID every 10 minutes and under certain other circumstances. Some operators, especially the "big gun" stations who have big signals and many stations calling them, try to shave off a small amount of time on each contact by not IDing after every contact. While a second or so might not seem like much, these are stations that might work 200+ stations in an hour, so assuming there are enough stations to keep them busy (which for those stations may actually be the case), there can, in theory, be enough time saved by not regularly IDing to be able to make more contacts in that time period. As an example, let's say you can work one station in 20 seconds, or three per minute, which gives you a rate of 180 per hour. If you can shave two seconds off each contact, you can now work 3.33 per minute which translates into 200 per hour. That can add up over the course of a contest, under the right circumstances.

Of course, you need to ID occasionally to fulfill the legal requirements as well as letting the stations listening know who you are. (Yes, some stations can and do just assume that the spot on the packet cluster is correct. Sometimes it is, sometimes it isn't. I want to hear a callsign myself before I work a station.) While I personally will ID after every contact on those rare occasions when I'm "running" stations, I think it's OK to do it every 3rd or 4th contact, which means that the listening station have to wait no more than a minute or so to figure out the ID of the station. The problem is that some of these big gun stations have a seemingly endless stream of callers (many of whom are calling because of the aforementioned packet cluster spot) and they don't ID for many minutes at a time. I've read their arguments which I won't rehash here (if you're interested, you can check out the archives of the CQ-Contest mailing list) but to me, they are just being selfish. From their perspective, they have plenty of folks trying to work them, and it's just too bad for those of us who are waiting before calling. Often, I'll just give up after listening for a short period of time, but I risk missing a valuable multipler if it turns out that the running station was something that I needed.

I don't know what the right solution to this problem is, since the big guns aren't going to change their operating processes just because I think that it would be nice to do so. Some contests require the station ID as part of the contest exchange (though sometimes they omit it there as well; I wonder if they will get disqualified if the contest sponsors discovers that?) which solves the issue, but since even minor changes to the contest rules seems to be upsetting to much of the contest community, I can't see an ID requirement being added to any of the existing contests.

Sunday, November 27, 2011

Post-Thanksgiving Leftovers

As most folks know, we had the Thanksgiving holiday here in the US last week. It's a tradition to not only eat turkey with "all the fixin's" but also have have some leftovers for a few days after that. I've got the same for my blog mostly with respect to things that were still around after Thanksgiving. So, in no particular order:

I did my usual "playing around" in the big CQ World Wide DX contest this past weekend. This is one of the "main events" in the ham radio contesting world, and while I didn't really have time for more than just a few hours of making contacts, I did note a few interesting/amusing/annoying things. In this contest, you get points for working stations in other countries (not your own) with what's called a "multiplier" based on the country and something called a zone. (The term "DX" refers to a station from another country.) Without going into too much detail, it's relevant to know that there are 3 zones within the US. Your score is calculated by multiplying your points (number of contacts with stations outside your country) by the zone and country multipliers. You are allowed to work stations in your own country for the multiplier value, you just get zero points for doing so. It's important to note that while you can get the 3 zone multipliers that are available for the US by working stations in Canada, if you want the country multiplier credit for working the US you must work a station in the US. Since it's a zero-point contact, what I try to do is to find a US station that's not busy and work them, since I don't want to take them away from working their DX. Most operators understand this and have no problem with it, but on at least one occasion I called a US station who was CQing (repeatedly) with no responses only to have him respond "SRI ONLY DX". In other words, he was telling me that he would not make a contact with me.

As noted, I only work US stations when they aren't busy which was the case here. A complete contact with both stations exchanging information during a CW contest (which this was) takes around 20 seconds or less. So instead of helping me out by just completing the contact, he probably saved maybe 10 seconds by sending that other information. So much for good sportsmanship. (For what it's worth, I noted his call and will avoid making contact with that station in the future, even in contests where non-DX contacts "count".)

Also during the contest, I was working stations on 20 meters just calling stations and tuning up the band to find the next station. It's not unusual, while doing this, to have another station that is doing the same as you are, and depending on what band you are on and the propagation conditions, you'll sometimes be able to hear the other station. Sometimes, you wind up moving with that other station (sometimes more than one) and working the next station up the band either just before or just after that station repeatedly. Normally this isn't a big deal, but I got stuck behind the equivalent of tractor-trailer truck on small road doing 20mph below the speed limit:

There was a station that would usually call the DX station before me and work him first. No problem. However, unlike the normal orderly contact sequence (which for this contest is very simple: a signal report, normally 599, then your zone, which is 5 for me, meaning my half of the exchange is send in CW as "TU 5NN 5", with "TU" meaning Thank You, acknowledging that I got the contact information from the other station) he'd send something like "TU 5NN 4 4 4 TU DE (his callsign) (his callsign) (his callsign) 73". You might send your callsign if you think the DX station didn't get it, but the accepted way of doing it is prior to the other information and only if you think the other station might not have gotten it correctly. What wound up happening is that the DX station (who is normally working stations very quickly; remember that I mentioned it normally takes 20 seconds or less to complete a full contact) would hear the "TU 5NN 4 4" then assume that the other guy was through sending and send his "TU QRZ?" (meaning he got your info and is moving on), only to realize the guy was still sending. In one case I heard the DX start to send his final sequence 3 times "TU ...  TU ... TU" before the other guy finished.

The problem with doing this is that you slow everyone down, and while it's not against the rules to do this, it's another example of poor sportsmanship. The station doing this had to know that he was slowing everyone down. (And before everyone jumps on me, this was definitely not a new contester, so it wasn't a case of "not knowing better".) I'm not sure why he was doing this, but finally I just gave up and jumped far enough up the band so that he was no longer "in front of me" anymore. (In fact, I went way up the band and started tuning down, meaning that while I might cross paths once more, it would be in opposite directions.

I've got a few more leftovers to go, but I think I'll just put them back in the 'fridge for next time.

Monday, April 18, 2011

Happy Passover, Morse Code Style

For my friends celebrating Passover, here are the four questions in CW. First the "intro" question:



And the other four questions, a bit faster (so you can get on with the seder):



Text to Morse translation courtesy of Learn CW Online. The first part is at 20 wpm, the main four questions are at 50 wpm. (And no, I can't decode that by ear either.)

Happy Passover!

The player embedded here requires HTML 5, which means you'll need a pretty recent browser. If you don't have one, you can right-click and save the intro and the questions.