HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
Comments
View Comments: Newest First|Oldest First|Threaded View
<<  <  Page 2/2
Rob Spiegel
User Rank
Blogger
Re: Computer interference
Rob Spiegel   7/9/2012 6:05:04 PM
NO RATINGS
That's a new one for me, Naperlou. I haven't experienced that audio bleed from cell phones. Is that a common occurrence?

warren@fourward.com
User Rank
Platinum
Re: Computer interference
warren@fourward.com   7/9/2012 10:50:28 AM
NO RATINGS
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.

naperlou
User Rank
Blogger
Computer interference
naperlou   7/9/2012 9:50:31 AM
NO RATINGS
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. 

Beth Stackpole
User Rank
Blogger
Those were the days
Beth Stackpole   7/9/2012 8:54:03 AM
NO RATINGS
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.

<<  <  Page 2/2


Partner Zone
Latest Analysis
Advertised as the "Most Powerful Tablet Under $100," the Kindle Fire HD 6 was too tempting for the team at iFixit to pass up. Join us to find out if inexpensive means cheap, irreparable, or just down right economical. It's teardown time!
The first photos made with a 3D-printed telescope are here and they're not as fuzzy as you might expect. A team from the University of Sheffield beat NASA to the goal. The photos of the Moon were made with a reflecting telescope that cost the research team 100 to make (about $161 US).
At Medical Design & Manufacturing Midwest, Joe Wascow told Design News how Optimal Design prototyped a machine that captures the wing-beat of a duck.
The increased adoption of wireless technology for mission-critical applications has revved up the global market for dynamic electronic general purpose (GP) test equipment. As the link between cloud networks and devices -- smartphones, tablets, and notebooks -- results in more complex devices under test, the demand for radio frequency test equipment is starting to intensify.
Much of the research on lithium-ion batteries is focused on how to make the batteries charge more quickly and last longer than they currently do, work that would significantly improve the experience of mobile device users, as well EV and hybrid car drivers. Researchers in Singapore have come up with what seems like the best solution so far -- a battery that can recharge itself in mere minutes and has a potential lifespan of 20 years.
More:Blogs|News
Design News Webinar Series
10/7/2014 8:00 a.m. California / 11:00 a.m. New York
9/25/2014 11:00 a.m. California / 2:00 p.m. New York
9/10/2014 11:00 a.m. California / 2:00 p.m. New York
7/23/2014 11:00 a.m. California / 2:00 p.m. New York
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Oct 20 - 24, How to Design & Build an Embedded Web Server: An Embedded TCP/IP Tutorial
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Next Class: 10/28-10/30 11:00 AM
Sponsored by Stratasys
Next Class: 10/28-10/30 2:00 PM
Sponsored by Gates Corporation
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2014 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service