Archive for the ‘Ham Radio’ Category

Slowly, slowly

8 June 2017

Still not in a writing mode, but working towards it. As far as that part of my life goes, I’ve been working on the Pa’adhe ebook. It’s been mostly proofing (found a couple of errors), layout, making sure things are in the right order. I’ve got three cover pictures left to do, still: one to replace an existing cover I don’t like and two for the stories that don’t have a cover yet. The designs are done, but now I have to figure out what pictures to take and combine for these covers.

Talking about pictures, I’ve also been working on three photography projects. Actually, it’s probably more accurate to say two videos and one photograph.

The photograph is a three generation portrait that I’ve been thinking about for several months. Now that everyone’s present that needs to be in it, I can proceed with actually taking the photo. I’ll be using the DJI Phantom 4 for this due to the perspective needed and to avoid any part of the photographer being in it. It’s also necessary to use the drone to achieve the hidden geometric aspect I have in mind.

One of the videos I have mentioned before. I’ve a script written for it and have all the necessary gear to do the shot. What remains is to get the necessary actors together on location (herding cats would be easier) and get the video needed so I can get to work compiling the whole. This I need to get done within the next two months or it’ll be unlikely to ever get done.

The final video is one that I am not even sure is going to be anything more than an experiment. Fundamentally, it’s one of my granddaughter dancing, but it’s the perspective that makes the video what it is. Or breaks it. I can see in my head what I want to achieve, but until I actually start processing the video, I have no way to tell if it’ll work or not. In some ways, it’s abstract…but without being abstract. I’m trying to explain to some extent the problem with the visualization without giving too much away yet and that’s not easy to do. With everything else I can throw out teasers, but this one…any teaser is too revealing. Let’s just say that if I don’t get the angles right, it’s not going to work and since there’s nothing like it out there that I know of, I have no guidance to the right angle. If it’s off by even a little bit, the impact won’t be there. Even so, right angle or not it could still be a bust.

Both videos will utilize the GoPro Hero 4 Black and the DJI Phantom 4, though in different ways. I never did think I would be doing video, but there it goes. Never say never.

I’e been doing a bit of amateur radio, just PSK-31, since my last blog post. I have to admit I’m happy with the home station, but not so much with the mobile setup. I need to do some more playing with the mobile gear to figure out what’s not working, but it’s also quite possible that it’s simply there was no activity when I was using it. Or maybe it was a bad location. All I can do is keep trying different locations for a while before I start troubleshooting the gear.

OK maybe not quite back yet

20 March 2017

Like it says, maybe I’m not yet back into the writing grind. Still, some life is better than none, eh?

Since that last post, I’ve been mostly working on my ham shack. I now have a laptop set up for use with my radios and the setup works either on the desk in the house or in the vehicle up in the hills. Simple plug and play. Plus I got my radio desk cleaned off, finally!

I designed and built a switchbox that effectively gives me a Tigertronics USB SignaLink with two different radio jumper setups. It’s a simple circuit, just bringing the SignaLink JP1 socket out of the SignaLink enclosure and creating two parallel sockets in the switchbox instead. With a jumper block in each, I can easily switch the SignaLink between the two radios by flipping switches instead of having to open the SignaLink enclosure, swap jumper blocks, reassemble the SignaLink, and switch radio cables. A 15 minute operation is now down to 15 seconds. Nice trade, if I do say so myself.

You can see this switchbox in the picture right under the SignaLink.

The ham shack today. The new switchbox is under the SignaLink between the two radios, above the laptop.

Yup, those of you that are interested, it switches between the Kenwood TS-130V on the right and the Yaesu FT-2500M on the left. Being deaf, my focus is on the digital modes and a friend who is 20 miles away and I plan to play with the digital modes on 2m. So, I expect to be switching back and forth: experimenting, playing, and chatting with my friend on 2m and doing the same on HF with whomever’s out there. The 2m setup will allow us to both get familiar with various digital modes, including CW, and get in some regular practice with them regardless of HF band conditions.

I’ve finally been able to make the test videos for my video project. I have sure learned a lot just making these two 2 and 3 minute videos. Not only post processing, but things that have to be watched out for when filming. Trust me, I’m getting a new respect for directors and filmmakers.

The GoPro has definite fisheye artifacts, as I mentioned previously. I’m still feeling my way in the editing room dealing with this, but I think progress is going well. The Phantom 4 video doesn’t need much editing, as far as colors, etc., but I do need way more practice flying. I discovered that among other things, mimicking a bird taking off isn’t quite as simple as “just push the two control sticks at the same time.” Yeah, there’s that, but you don’t push them the same amount. I also absolutely must fly the planned route ahead of time or I’m going to have very definite un-bird-like behavior.  Even so, everything looks to be saying the video I want to make is doable.

Other than that, I’ve mostly been doing reading, studying Blender, and at least thinking about writing more Pa’adhe stories. Oh, and I have some more mead brewing.

A Return Update

5 March 2015

It has been a weird beginning to the year for me.

I fully meant to return to this blog well before now, but somehow writing for my blog just wasn’t a priority. From time to time, I’d think of something to write about, but I just never sat down and actually did so.

From an amateur radio standpoint, I’ve been working to develop something I refer to as The Thumper. It’s based on something I read about in a blog post where the ham described his fondness for CW (Continuous Wave, aka Morse Code) and an on-the-air experience meeting a group of deaf learning ham radio and cw. The original Thumper was mentioned only in passing, and described as “a device that attaches to their forearm and taps them to indicate the Mose Code being received.” I have various issues with LED displays and my current tactile transducer setup leaves much to be desired. For The Thumper, I’d started by utilizing an Arduino driving a RC servo and while that does work to an extent, it has an inherent speed limitation that I don’t like. Almost anything over 10 wpm keeps the servo at the end of travel, making it impossible to detect the characters. I’m now looking at using a vibrator similar to those in cell phones, compliments of a good friend and fellow ham. Although not what I originally envisaged the vibrator does show better promise and a nice theoretical response to faster CW speeds. Coupled with a LED, it may turn out to be the best solution for me to listen to the radio. I know, but the combination might turn out to be better than the parts. Right now, I’ve only got the Arduino driving the vibrator. Still to be done is receiving and converting over-the-air CW signals provided via the audio jack of my radios.

Plans are under way for more Owyhee explorations, and while doing that I fully intend to try HF radio work from way out in the middle of nowhere. I’m building an end-fed, multi-band wire antenna that should be tuned to each band: 10m, 20m, 40m, and 60m. It’s only mobile in that you can easily carry it coiled up in the vehicle, to use it you have to park and deploy it. We’ll see how that works in practice, but I’ve got good expectations. I’ll be focusing, of course, on CW and PSK but when solo. If I have a friend along, I’ll be trying some phone work as well. More than likely, I’ll be band scanning and if I hear anything, I’ll pause on that and see if I can contact the other person.

Photography-wise, I’m currently teaching a beginning photo class, but with a twist. In all my previous classes I noticed that there was never a deaf or hard-of-hearing person attending. This time, I told the community education group that I would teach a beginning class in sign language. When I shared this idea with the few deaf community members I knew, the enthusiasm was outstanding. In the end, due to various reasons, there were only three in my class. We’re having a blast and there would have been at least two more were it not for an age limitation posted on the community education web page. That limitation didn’t apply to my class, but that exemption information was not passed on to the people that wanted to sign up. Word’s starting to get out there about this class, though, and I’ve mentioned I’ll offer it again, the same way. One of the reasons for doing this is that I just felt like turning the tables on the regular offerings…they’re oriented towards hearing people, the deaf have to get an interpreter. This time, though, it’s the hearing that have to get an interpreter if they try to attend.

I have also been investigating the use of the Shutterbug Remote with my Pentax K3 DSLR. Testing with an iOS device showed that the remote works well with the K3, but I’m getting crashes using the Android version of the app on my Samsung Galaxy Note 4. Testing with a Samsung Galaxy S5 shows it works reasonably well with that phone, so now I’m trying to determine whether or not it’s a setting, a FW, or a HW issue with my Note 4. An email to the developers has not provided any response, so I’m very unimpressed with the customer service aspect of their website. Enough that I’m not providing a link to it. It would be really nice to get this remote working with my phone as it’s a great little device which when used as an intervalometer provides better timing control capabilities than the built-in intervalometer mode of the K3. If I can’t get it working, I’ll definitely have to create an Arduino intervalometer or something.

I’ve built a new woodworking bench (above) in my garage along with a DIY woodworking bench vise (below). These will come in handy when I start building the Vardo.

On the Vardo front, I’ve started gathering materials to modify the trailer for the Vardo. It took me a while to figure out the best way to use my flatbed trailer for the Vardo, and still be able to easily use it as a flatbed trailer. One of the things I had to deal with was me being “greedy.” The flatbed trailer is 12’ by 6’ and I had been doing my designing based on that entire area.

Image of a 6 foot by 12 foot utility trailer with one pair of wheels. Sides are an open framework of angled metal. Tail gate is about 4 feet tall when up and contains a metal mesh. Parked next to a blue-green 1992 Chevy Blazer in front of the garage in the driveway.

This is the new utility trailer that will become the base for the Vardo. I’m especially happy to get the all metal bed.

I was going to have a big Vardo that had luxurious room inside. Kind of a contradiction to my original plans for a simple, cozy Vardo, actually. As a result, one of the things I had to figure out a way around was the six tie-downs on the trailer bed near the sides. I finally realized that they provided a perfect way to fastend the Vardo to the trailer, a la pickup campers: straps built onto the framework of the Vardo that connect to the trailer tie-downs via turnbuckles. To do that meant I had to narrow the width of the Vardo box to fit inside the tie-downs enough that I could hook them into place and tighten. It’s only a 6” loss in width, give or take, but it also freed up the solution to another issue: I wanted to put the same kind of mesh that I had on the tailgate along the sides of the trailer. That way, things put in the trailer wouldn’t roll out under the existing side rails. And I could use that now open area to store poles for awnings, and other such gear.

I’ve been doing quite a bit of fishing lately, for rainbow trout. Normally I would catch and release trout, but my wife and I have found that we like the fish. I’ve learned to fillet them so that we don’t really need to worry overmuch about bones while eating. Only about 15 minutes from my house is a great little pond where, so far, I’ve always managed to catch my limit every day. I didn’t use to fish that much, or to enjoy it, but I’m finding I do. I’ll probably go fishing rather regularly while retired, using that to supplement our diet with fresh fish on a regular basis. It’ll be interesting to see how the fishing goes as the weather warms up.