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
Some humanoid walking robots are also good at running, balancing, and coordinated movements in group settings. Several of our sports robots have won regional or worldwide acclaim in the RoboCup soccer World Cup, or FIRST Robotics competitions. Others include the world's first hockey-playing robot and a trash-talking Scrabble player.
Sherlock Ohms highlights stories told by engineers who have used their deductive reasoning and technical prowess to troubleshoot and solve the most perplexing engineering mysteries.
Melissa Cavanagh of 3DP Unlimited talked to Design News about the company’s large format 3D printer, during Medical Design and Manufacturing Midwest.
The DDV-IP is a two-wheeled self-balancing robot that can deliver cold beverages to thirsty folks on hot summer days. A wireless RF remote enables manual control of the device beyond the act of self-balancing. All of the features of the DDV-IP result in an effective delivery vehicle while providing entertainment to the user.
Eric Doster of iFixit talks about the most surprising aspect of the Microsoft Surface Pro 3 teardown. In a presentation at Medical Design & Manufacturing Midwest, iFixit gave the Surface Pro 3 a score of one (out of a possible 10) for repairability.
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