I have the same problem in my car. When my ATT phone talks to the tower to change towers, it transmits and meses with my radio. I have to have it far away from the receiver to avoid the irritating buzzing. But I don't blame the cell phone. After all, who expects to place a transmitter so close to a receiver without interference? That's why we squelch the radio during transmit, normally, in ham radios. Plus, we aren't always duplex, but that is another story.
Frank, that was an iteresting experience. Today we have a similar issue with cell phones. I am not talking about the regulatory situation, but about interference with audio equipment. My son first told me about it in regard to a situation in middle school. Students were not to have cell phones in school. If they had them, they were to be turned off. Often, though, they were not. In classes with computers the teachers noticed a buzzing sound coming from the computer speakers. They soon figured out that it was the cell phones, and it allowed them to "catch" those students who had their phones with them. Now this happens only with the at&t GSM phones. I had a Verizon phone which used a different frequency and transmission type (CDMA). I did not notice interference with audio equipment with those phones.
Nice look back at life prior to the onslaught of computers and devices. Going into that MIT lab and seeing the spread of computers must have been eye-opening then. Today, you'd see a comparable set up in an office and even in some homes. Also pretty eye-opening that the FCC wasn't governing the computer spectrum back in those days. Shows you that Bill Gates' vision (and others) of a computer on every desk was still pretty much considered a pipe dream.
For 3D printing to make the jump from rapid prototyping to manufacturing, engineers will need to find easier ways to move products from their CAD screens to their printers.
Gigabit and PoE are two networking technologies moving ahead in tandem as industrial users power remote Ethernet devices such as IP security cameras at 1,000 Mbps over existing CAT5 cable.
New versions of BASF's Ecovio line are both compostable and designed for either injection molding or thermoforming. These combinations are becoming more common for the single-use bioplastics used in food service and food packaging applications, but are still not widely available.
From Dell / Intel® New Paradigms in Design Work Scott Hamilton, vertical market strategist for Dell Precision workstations, 5/2/2013 5
Early in my career, I worked as a draftsman and remember the days of drawing on vellum with numbered pencils and Mylar with plastic lead. This was a fun experience in the sense that I ...
I've been using workstations for more than 10 years and love finding ways to get more performance from my system. With demanding professional applications that require more power each ...
A lasting memory from my first job as an engineer in an auto assembly plant is standing on hard concrete at six in the morning, vending-machine coffee clutched in hand, listening to ...
For industrial control applications, or even a simple assembly line, that machine can go almost 24/7 without a break. But what happens when the task is a little more complex? That’s where the “smart” machine would come in. The smart machine is one that has some simple (or complex in some cases) processing capability to be able to adapt to changing conditions. Such machines are suited for a host of applications, including automotive, aerospace, defense, medical, computers and electronics, telecommunications, consumer goods, and so on. This radio show will show what’s possible with smart machines, and what tradeoffs need to be made to implement such a solution.
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