Archive for July, 2009

Going back to school

Wednesday, July 29th, 2009

I got my Master’s degree in Computer Science in May of 2007. Luke was born about three weeks after graduation. Liam was born fourteen and a half months after that. Liam is nearly a year old now, and it’s time to go back to school and get my PhD.

I had planned on taking it easy the first semester and just taking one class. However, I was asked to teach a class, which comes with a partial tuition waiver, so I’m going to take advantage of that. I’ll be taking Dr. Rice’s Computer Audio course, ENGR596, as well as an independent study course. I’m not sure what the independent study course will be just yet, but hopefully it’ll help me decide on a topic for my dissertation.

The class I’m teaching is CSci103, which I have always described as the “this is a mouse” course. In the past I’ve always taught courses for sophomore or higher Computer Science majors with a few MIS majors thrown in (CSci223 twice and CSci323 once). They tend to take the class somewhat seriously. This time I’ll be teaching mostly freshmen, most with “non-demanding” majors. It will certainly be different.

In addition to teaching a class and taking two classes, I’ll be studying for comprehensive exams (to be taken in a year or so) as well as researching and trying to get published so I can get hired as a professor when I’m finished. It’s fair to say my hobbies and my family will be neglected to some degree.

When will I be finished? I’m going to say four years, which will have me graduating in the Spring of 2013. I could finish a little sooner (or a lot later), but I think that’s a realistic timeframe if I keep on task.

The Godfather

Tuesday, July 28th, 2009

I watched The Godfather for the first time ever a few nights ago. I’m often disappointed at movies that are supposed to be great, but The Godfather really is great. Watch it if you haven’t. It’s #2 on the American Film Institute’s list of best movies.

Next up? Number 1 on the AFI list, Citizen Kane from 1941.

Small Wonder Labs SW-40+

Monday, July 27th, 2009

As most of you know, I’m currently afflicted with the ham radio bug. I have a VHF radio I can use to talk locally, but nothing I can talk around the world on. For Christmas last year, Cassie got me (at my request) a Small Wonder Labs SW-40+ 40m QRP CW transceiver kit.

The 40m ham band is a good all-purpose band. It’s open to somewhere pretty much any time, day or night, even at this point in the solar cycle. QRP means it’s low-power. In this case, around 2.5 watts. Most commerical radios put out around 100W. CW means it only does Morse code, no voice, which means I’ll finally have to learn Morse code.

The SW+ series is well-regarded in the QRP community. There are models available for the 20m, 30m, 40m, and 80m bands. The kits are put together by a guy in New Hampshire. There’s a waiting list of around two months to get a SW+ kit.

Partially assembled SW-40+ board

The SW-40+ board with 8 of the 16 sections installed. I've added a couple of sections since this photo was taken.

A few weeks ago I finally got a chance to start putting mine together. The instructions that come with it basically say to build the whole thing, then test it. I’ve built some smaller kits before, but this is definitely my largest undertaking thus far, so I wanted some assurance things were going right as I built it. So, I’ve been using Chuck Adams’s, K7QO, guide to building the SW-40+. By following his guide, you build a section, then test it. He has it broken down into 16 sections, more or less. Some of the previous kits that I’ve built are used for testing.

You can see all the pictures from the construction process here. I’ll continue to add photos as I go along. I’ll post an update here occasionally too. So far I’ve installed the power supply, audio amplifier, keying, muting, audio preamplifier, receiver mixer/detector, IF crystal filter, receiver mixer, VFO, and transmitter mixer sections. That’s 10 of the 16 sections.

Testing the transmitter mixer section

Testing the transmitter mixer section by feeding the output of the transmitter mixer into the receiver.

A few months ago I bought a VE3DNL Marker Generator kit, but had never put it together. Chuck suggested using it to test the receiver mixer/detector section. It was a quick build, and the receiver mixer/detector section passed the test.

Testing Receiver w/ VE3DNL Marker Generator

VE3DNL Marker Generator board is on left of SW-40+ board. The VE3DNL transmits tones every 5kHz that can be picked up in the SW-40+ receiver.

After building the VFO section I wanted to have a look at the waveform. Chuck’s guide shows a nice sine wave. A friend had loaned me an oscilloscope for another project a few months ago, so I drug it out and set it up. To make a long story short, I was never able to view the VFO’s waveform on the oscilloscope. Something is wrong with either the probe or the oscilloscope itself. However, I was able to confirm that the VFO is running at around the correct frequency with the FCC-1 frequency counter I built a while back.

I have also built a K1EL K12 keyer to put in the SW-40+. As designed, the SW-40+ can only use a straight key. I wanted to be able to use iambic paddles, so I found the K12 keyer. It handles the input from the key and outputs perfectly spaced Morse Code. It sounds beautiful. It’s a pretty cool little device in its own right. I may do a post on it at some point.

K1EL K12 Keyer

The K1EL K12 keyer assembled.

More on the SW-40+ when I get a chance to work on it.

Weekend update

Monday, July 20th, 2009

Liam woke up Saturday morning with a fever. In addition, you could tell he felt horrible. We thought it was just teething-related issues. Turns out it’s thrush. He’s not quite as bad as he was Saturday, but he’s still not feeling good at all. Poor little guy. That’s two weekends in a row of not feeling well.

Obviously, Liam being sick distracted from Luke’s potty training. I still think it was a worthwhile venture though. By Saturday afternoon he was having very few accidents. Of course, we had his potty in the living room and Cassie was asking him if he needed to go every five minutes. The biggest “problem” is that he doesn’t realize on his own that he needs to go. I guess that will come with time. For now, at least until Liam gets better, it’s back to pullups and diapers.

Potty training Luke

Friday, July 17th, 2009

Potty training Luke commences after breakfast in the morning. Cassie’s chosen method involves Luke being naked from the waist down. It should be fun. Wish Cassie and Luke good luck.

Liam and I have been given the task of making ourselves scarce all day as to not interfere with the process. Anyone interested in having lunch with the two of us tomorrow?

Unfortunately we can’t hide out in my office. It’s a construction zone. I’m in the middle of adding several shelves to the closet. I could finish it in an hour or so, but that wouldn’t exactly be a Liam-friendly activity. Maybe I can finish it during one of his naps tomorrow, if Luke doesn’t find the drilling distracting.

Our week of sickness

Monday, July 13th, 2009

Sometime early last week Cassie started getting sick. Nothing too bad, just a runny nose, sneezing, coughing, etc. A day or two later Luke picked it up. Still no big deal. They were both better in a few days with no major incidents.

Friday afternoon Liam started showing signs of being sick, including a fever. We assume there was some teething involved, as he was drooling massive amounts of saliva. Saturday he was as miserable as I’ve ever seen him. Several times he would just cry and cry. Saturday night he woke up every couple of hours or so. Around 3am he decided he wanted to cry for a while. We finally distracted him with one of his toys. After an episode of the Wiggles we were back to sleep again.

Sunday he felt a lot better, but was still under the weather. He had a couple of crying spells, but nothing like Saturday. To our relief he only woke up once Sunday night, and it was before I went to bed, which is much easier to deal with. Other than being clingy and maybe a little whiny, Liam was almost completely better today.

Luke, on the other hand, just wouldn’t go to sleep last night, which is really strange because he’s a really good sleeper. He normally goes to sleep around 9:30pm. He and Cassie started out on the couch, then moved to the bed, then back to the couch, and back to the bed. Around 12:30am Cassie asked me to drive him around. I did. He fell asleep in about ten minutes. As I was getting him out of the car, he woke up. He laid in bed awake with Cassie for at least another hour before finally drifting off.

This morning he woke up around his usual time, ready to face the world. (Cassie, not so much.) No sign that anything was wrong. He was good all day. Tonight, just before bedtime, we discovered he was running a temperature. He seems to be feeling fine other than that though. Hopefully it’ll pass.

The last time we had it this bad was when we all got a stomach virus before Liam was born. We had to call in reinforcements that time. It’s never fun to see your child miserably sick. It’s even less fun when they keep you awake. :) I hope it’s awhile before we have another episode like this again.

Gran Turino

Saturday, July 11th, 2009

I used to “review” a fair number of movies on my blog, but not so much lately. That’s probably due to the fact I haven’t had time to watch as many movies lately, but also because most of the ones I’ve seen have been pretty mediocre.

Last night I watched Gran Turino and really enjoyed it. I wasn’t so sure about it during the first little bit, but it wasn’t too long before I was sold on it. For the first half hour or more Eastwood is playing Dirty Harry all over again. That was perhaps a bit overdone, but he makes up for it later I think.

I thought the brief look at the Hmong people was particularly interesting. Too often movies have generic ethnicities. I feel smarter for having watched the movie, and that’s always good.

I enjoyed seeing the classic guns in the movie too. Most prominent were the M1 Garand and M1911A1, both historically accurate for someone that would have served in the Korean War.  There appeared to be a large revolver in his waistband in the scene where he saves the Hmong girl from the black thugs. The Dirty Harry .44 Magnum perhaps?

Definitely add Gran Turino to your “to watch” list.

Field Day Report

Thursday, July 2nd, 2009

Field Day went well this past weekend. It was incredibly hot, but we all made it. We made nearly 600 contacts. We had contacts with virtually every state, including Alaska, at least half of the Canadian provinces, and a few foreign countries including Cyprus. While tuning around the bands I ran up on a guy from Bath, England with an incredible signal. He must have been running an amp. Unfortunately I never got a chance to talk to him because he was more interested in chit-chatting than making Field Day contacts.

I used my “antenna launcher” to put up about seven antennas Saturday morning. I don’t think I’ve ever done a post on my launcher. I’ll have to do that soon. It’s pretty neat.

I’ve determined that I enjoy setting up the Field Day site just as much or more than actually operating. I’m not sure why that is. I’ve already got several ideas for improvements next year.

I’ve been trying to learn Morse Code (CW) for several months now. I haven’t been spending enough time on it to actually learn anything, but watching the guys at Field Day got me excited about it again. Plus, I’ve got to learn it if I want to get much use out of the radio I’m building right now. More on that soon.