Tag: Software Defined Radio

May 15, 2024 – The Monster Is Growing

May 15, 2024 /

This is kind of a fun one for me. I have had some time lately where my wife is getting long visits with friends. As a result, I hide out in the basement working on my experiment with Linux and radios. I do have my Software Defined Radio working, it is just not quite dialed in.

I am monitoring the stations that say are Police/Fire but I have yet to hear anything. It is kind of like fishing. You don’t catch anything if you don’t try but just because you are fishing doesn’t mean that you are going to catch anything. I don’t know if my antenna is not good enough or the frequencies are wrong or the software doesn’t work as advertised.

Regardless, the bottom monitor was one that I had in my office. It stopped working reliably in December of last year. It would plug in and work for a day until the computer went to sleep and then it would stop working until I unplugged it for a day or so. I replaced the monitor and put it in the recycle pile.

But, since the monitor was in my way, I decided to test it a little further and plug it into my Linux computer. I had a bit of a working theory that there was something to do with the graphics card since the monitor seemed to work on one machine but not when I switched over to another computer with a KVM (Keyboard Video Mouse) switch. Low and behold, it worked all week. Then I decided to hook two monitors up and it worked another two weeks.

Rather than throwing a 27″ monitor away. I decided to go for it and order a dual monitor stand. In the picture you can see that the tower on the left is the computer I have been talking about. The tower on the right is my XP machine running Linux Mint (32-bit). You read that correctly, Windows XP. This is the machine that my wife insists still has pictures and data that she still wants. These two also have a KVM switch attached to them.

Given that the Linux Mint computer is almost twenty years old and running out of date hardware, it actually runs pretty well. In fact, it runs significantly better than when I try to boot into XP. That is a good 10 minute wait before everything gets going. As an example, I swapped out the wireless card with one that I replaced in my main computer around Christmas time (to add Bluetooth). Mint recognized the card and added a driver and XP did not. I don’t really care because both of them are wired as well. I use it mostly as a troubleshooting tool.

I learned though that the same KVM problem came back when I tried to use the 27″ monitor as the primary monitor by both systems. This means that the upper monitor is the one that works with both computers but I don’t see myself using the old Linux Mint machine much given that it is somewhat limited. I wouldn’t have done this anyway if I didn’t have two monitors in the first place.

Given that I am getting things real cozy in that spot, I started thinking about it would make a good place to put some radios as well. Lately, I have been scrolling through a lot of vintage CB base stations and different GMRS radios. I wouldn’t be surprised if some of that is in my future. I will have to modify shotgun hull storage area to do so. Given that reloads can’t be used in trap competition it is unlikely that I will be ever doing that.

End Your Programming Routine: My only real problem with this new setup is that it is cold. It is not a good place to sit for a long time even bundled up. That being said, it is kind of fun re-purposing old hardware and upgrading at the cost of pennies on the dollar compared to their technological heyday. If I have to keep something around, I might as well enjoy it.

October 3, 2023 – My Technojunk is About to Go Overdrive

October 3, 2023 /

I may do some YouTube videos on some of this stuff. It is amazing how bad some of them are. I am smart enough to get the gist and read between the lines. But, I can rely on all of my technical background to supplement the bits of information I get from others. I strongly suspect that if you are not a computer geek or electrical engineer then a lot of this help is just Greek to most.

Since I built my office, I have been contemplating getting a PC tuner card to play broadcast TV on my computer. I planned for it by running antenna wire into my office. I even bought a card that I thought was a steal at $10. I am the one that got stolen from because I didn’t realize that it was a tuner for the old analog broadcasting (and cable and satellite) which kind of defeated the purpose. Ten dollars was a pretty cheap lesson and now I know that the broadcast format today it ATSC Version 1.

I was reading an article that ATSC Version 3 is on the horizon. This effectively means that all of today’s current TV tuners will become obsolete as this new technology. But it also means higher resolution and mobile capability. Probably at some point, this will be integrated technology into everything. But for now, I will settle for just the TV tuner that works.

Looking at used cards, I was wondering about how to get the software. My research has informed me that it is the software that matters unless your computer is frozen in time (disconnected from the internet). The reason being is that you need manufacturer support to ensure these devices keep working as the operating systems continuously upgrade. So, I was reading that I can buy the software as well as a bare card and hopefully get this system working.

The thing that really sold me is that the latest version of the software gives its own IP streaming capability. This means that I can have this program running on one computer and access it from any device on the network. This should mean that I can access live TV from all of my devices which is what I am going for to augment this football season. I don’t really want to sit down and watch a game as much as I want to have it on in the background while I am doing something else.

I am hoping that installing this card is nearly a slam dunk. My next subject is going to raise the roof on things. About three weeks ago, we got a text saying that there were some armed suspects of a stolen car on the loose and running from the police nearby. It turns out that there were five juveniles in a stolen car being chased by the police. Their path took the chase around our house and ended in the neighboring city.

The day after, four were caught and one remained at-large. It turns out that the driver shot at sheriff’s deputies while the foot chase pursued. But, the fact remains that if it wasn’t for that text, we would have not known anything that was going on. That seems to be ignorant. I have been wanting to get a police scanner for a long time but I don’t know or understand all of the technologies.

I have known for a long time that many of these frequencies are streamed on the internet. I was thinking, why don’t I setup one of those old computers that I setup to run Linux just have it streaming the scanner broadcast. The computer is just sitting there and it is even on. It would be my own scanner base station.

I started looking around and I have heard of this term Software Defined Radio, but I didn’t realize how simple it was. It is actually a radio receiver that is plugged into a USB port and the computer does what a radio does. In essence, the USB dongle is the radio and the software does all the work. An even better plus, drivers and software can run on Linux so now I can repurpose that computer into something useful. My own software defined radio, hopefully for scanner purposes at a very cheap opening cost.

I am going to take it slow. The one video I half watched said that I actually needed two USB radios to make a scanner. I am not sure why yet but I am going to start with one to get it installed and see if I can pick-up anything. I will work my way up to two and more radio stuff.

Despite my lack of desire to talk to strange people over the radio, I actually think that radios are a perfect blend of technojunk, science and preparedness. I don’t know how deep I really want to go with this but I would like to add CB radio to my pickup to monitor logging traffic if or when I am in the woods on a week day. I also think that it is miles more reliable that the handheld walkie-talkies so talking with others in a hunting party would be much better as well.

End Your Programming Routine: I am doing it. I am taking a baby step into radio communications. I am probably starting on a different end than most people do because the technology wasn’t available when they were learning. That being said, this is a much cheaper entry point for me. I know that cheaper often leads to less satisfaction and more struggle, but I also don’t have much to lose. Stay tuned for more technojunk in the near future.