Always test as much as possible before relying on any technique to block Caller-ID. Some of these methods to block Caller-ID work in some areas, but not in others. Block Caller-ID For a Single Call Using a LASS Code Dial *67 before you dial the number. (141 in the United Kingdom) Block Caller-ID On All Outgoing Calls Dial your local telephone company and have them add Caller-ID block to your line. If you use this method to block Caller-ID, you will have to dial *82 before every call for which Read More

GFCI outlets give people additional protection from electrical shock. They also reduce the risk of structure or house fires that electrical system faults cause and mitigate the risk that faulty electrical circuits pose to equipment. A ground fault circuit interrupter is used in a GFCI outlet in order to cut electrical power when a fault is detected. It may also be installed at a breaker box or used as a portable outlet. How does a GFCI Outlet Work? A GFCI outlet monitors the flow of current through the outlet’s circuit. Read More

A data warehouse is a place where data is stored for archival, analysis, and security purposes. Usually a data warehouse is either a single computer or many computers (servers) tied together to create one giant computer system. Data consists of raw data or formatted data. It can be on various types of topics including the organization’s sales, salaries, operational data, summaries of data including reports, copies of data, human resource data, inventory data, external data to provide simulations and analysis, etc. Besides being a storehouse for a large amount of Read More

Forward Error Correction (FEC) is a type of error correction that involves encoding a message in a redundant way, which allows the receiver to reconstruct lost bits without the need for retransmission. How Forward Error Correction Works FEC works by adding “check bits” to the outgoing data stream. Adding more check bits reduces the amount of available bandwidth by increasing the overall block size of the outgoing data, but also enables the receiver to correct for more errors without receiving any additional transmitted data. This dynamic makes FEC ideal when Read More

GMRS (General Mobile Radio Service) is a licensed radio service. GMRS consists of 16 UHF channels on FM, plus 7 channels that are shared with FRS. The maximum allowable power for a GMRS radio is 50 watts. The GMRS channels which are shared with FRS are limited to 5 watts of power. The use of repeaters is allowed on GMRS. Most GMRS repeaters use CTCS (Control Tone Coded Squelch). GMRS Frequencies The frequencies assigned solely to GMRS are: Designator Simplex or Repeater Output Repeater Input 550 462.550 MHz 467.550 MHz Read More

There are two different types of AIM Icons used with AOL Instant Messenger, buddy icons, and AIM message icons. A buddy icon is an icon that the user selects to associate with the screenname they use. Typically these icons are a picture of the user that the user likes, or an image of a hobby, character from media, or other interesting image. Buddy icons are 50 pixels by 50 pixels, and can have a color depth of up to 32-bits. AIM users can choose to display or block buddy icons Read More

Flickr is a website that helps users store and share photos online. Users can also easily find friends who use Flickr by linking up with their email or Facebook. Users must create an account to upload pictures, but can browse galleries without creating an account. Create a Flickr Account Users can sign in to create an account with their Yahoo, Google, or Facebook account. A user who does not already have one of these accounts can click Create an account and will be redirected to register with Yahoo to create an Read More

For those who have been contemplating setting up a wireless network in their home, there are many reasons to consider how a wireless network will benefit you. One reason that many people decide to set up a wireless network is to share a internet connection. By setting up a wireless network, several family members can be on the Internet at the same time. As well, the use of a wireless network also make it possible to send files between different computers without having to save the information to a diskette Read More

An oscilloscope is a tool that allows the user to do two things. The first is measure time-varying signals. The way it does this is it shows details of the wave shape. The faster the wave shape, the faster the signal over a period of time. This leads to the second thing it does which is measure different aspects of time-varying signals such as the frequency of the signal and the peak value of the signal. Whenever there is an instance when the signal varies as time goes on, you’ll Read More

A stereomicroscope is generally known as a comparison microscope and it is used in scientific fields primarily for comparing two side by side specimens. A stereo microscope is made up of two regular microscopes connected together with an optical bridge. For instance in forensics, it may be necessary to compare to samples to each other, using a traditional microscope the viewer will need to memorize the contents and switch slides, however with the stereo microscope, the viewer can see both slides side by side at the same time. The stereo Read More