I just completed a migration from an old PC to a new, much faster PC. Normally, I should have been scared of the amount of work involved in such activity. But it went very smoothly and took only a couple of minutes, believe it or not! For the OS, I use Xubuntu Linux 12.04LTS, a lightweight Ubuntu.
They seem to be more and more popular. They show up in every electronics store flyer. Their price tag makes me choke on my morning toast every time I see them. I am talking about those very expensive headphones, such as the Beats and Bose brand names. How in the world can a company charge so much for a tiny pair of wearable speakers? Actually, the real question is how in the world can someone justify this purchase!!!
And I am not even talking about cordless headphones here. At this price you can get a corded version... You can also buy a bluetooth-fed pair of headphones for that price tag, But that would still be $350 too expensive for me...
For some time, I had been contemplating the purchase of a pocket oscilloscope for up-the-tower or car fixing work. A few months ago I came across this oscilloscope listing on eBay. It was from a Canadian seller called "nooelec". The unit is a JYE DSO 082. It is a single channel, 10MHz bandwidth, 50Ms/S sample rate, LCD display digital storage oscilloscope. The specifications looked promising, so I went ahead and ordered one.
Today, August 31st 2011, marks the end of an era in Canada. The analog NTSC television signal broadcast. Well, I must vent out on one statement I have been hearing and reading in the Canadian media: "Now that we are transitioning to digital TV, the rabbit ears antenna era is over..." I have been hearing this false statement over and over in the last year. How to confuse the viewers when it can be stated clearly. IT HAS NOTHING TO DO WITH THE ANTENNA! The same radio spectrum is more or less used. It is all happening in the TV set. Just buy a converter box if you have an older TV set with an analog tuner. Hook up your rabbit ears, or any TV aerial, to that converter box, and hook up the box to the TV set and you'll be in business. You readers all know this, of course, but you are not the average Joe-Blo person if show any interest in my blog.
Let me try to come up with possible reasons why they have been making this false statement over and over:
I have had several requests from readers of my QEX and QST magazine articles. They specifically wanted to know about the techniques I used to get professional looking lettering on the enclosures I show in the articles. Here are two approaches I use:
OK, I have to confess, I tend to go overboard when it comes to telecom electronics. But I seldom buy new. So I don't spend a fortune. Since my young age, the telephone has always fascinated me. Of course, having several phones in the house is useful. I am sure that most of you have that. But how about having a Private Branch Exchange (PBX) in the house? Sounds overkill? Maybe for most, but read through; I will try to sell my point.
You must have already bought a radio or test equipment that had a display window with scratches. Or maybe you have scratched it yourself? Well, be aware that there is a simple solution to removing scratches off the surface of clear hard plastic. Light scratch marks will disappear and deeper ones will be much reduced.
You and I know that nothing is perfect in this world and the world of electronic instrumentation is no exception! It is therefore important to ensure that our measuring instruments are as accurate as possible.
One of the most likely test instrument to deviate over time is the frequency counter. The reason is that it uses the precision of an internal reference, an oscillator crystal usually running at 10,000 MHz (to verify this, look for a "10.0000" on a crystal or on a small metal box inside the counter). However, this oscillator "ages" over time, and thus changes in resonant frequency. Fortunately in most cases, this oscillator is adjustable. There is usually a "small screw" adjustment (a variable capacitor) on or near the oscillator. But where to get a reliable 10MHz reference oscillator to adjust the counter? Yes, fans of shortwave radio, the WWV station! This atomic clock at NIST (USA) transmits its signal on a carrier frequency of exactly 10.0000000 MHz.
I use rechargeable lead-acid batteries for many applications: Portable radio operation, on camping trips and during power outages. The one on my camping trailer is a 70-Amp Deep-Cycle battery. I have had the same battery for six years and still have not seen any deterioration in performance. This is a pretty good life for a battery that I only use from June to August, and that I put back in storage for the rest of the year.