The F connector is a particular type of radio frequency connector that was developed in the early 1950’s. Eric Winston is usually credited with the creation of the F connector, while developing cable television as an alternative to the broadcast television options of the day. What does the F Connector do? The F connector provides an inexpensive connection for coaxial cables to communications devices and to other cables. While the cost of an F connector is generally less than many other types of radio frequency cable connectors, the connection provided Read More

SCPC stands for Single Channel Per Carrier. SCPC is a form of satellite transmission where each channel is transmitted on a dedicated single carrier. The alternative to SCPC is MCPC (Multiple Channel Per Carrier). MCPC is more efficient than SCPC, but SCPC is still utilized for some satellite feeds. By using SCPC, satellite users are able to uplink to the same transponder from multiple locations.

A farad is the standard unit of capacitance. It is defined as the capacitance required to create one coulomb of static charge for every volt of potential difference. Another definition is the capacitance that would change it's potential difference by one volt if one ampere of current flowed for one second. History of the Farad The farad was formally defined at an international conference in 1881, and is named after Michael Faraday (1791-1867), a British physicist. The symbol is F, and is always written in uppercase. The farad is sometimes Read More

  Round Trip Time, or RTT, also known as “round-trip delay time” is the time it takes for a signal to be sent from a transmitter to a receiver plus the time it takes to verify that the signal has been received; therefore, Round Trip Time is the time it takes for a signal to be sent from one location to another and back again. RTT almost always relates to telecommunication, but may refer to the Internet, satellite communications, or radar systems.   How Round Trip Time Works Round Trip Time Read More

A radar jammer is a piece of equipment used to scramble nearby radar signals. Radar jammers are often used by drivers to jam the signals coming out from police speed detectors. The radar jammer is very similar to the Power Drainer and is the size of a small box. Radar Jamming as a Crime There are active radar jammers available that work on the principle of interfering with the Doppler shift that is created in the radar beam from the radar gun. However, the law states that the interfering of Read More

Real-time locating system, otherwise known as RTLS, is a technology that is interconnected with GPS. An individual can attach a receiver to something they are shipping and then, at any given time, know the exact location of that item anywhere in the world due to the RTLS technology. In other words, RTLS allows for shipping companies to keep a consistent track on their shipments so they can offer clients a more detailed delivery expectance time. While it is still newer technology, RTLS is quickly gaining momentum in the United States Read More

CMOS (Complementary Metal-Oxide Semiconductor) is a type of technology that is used to construct integrated circuits. These semiconductors use both positive polarity (PMOS) and negative polarity (NMOS) circuits. This is beneficial because only one of the circuit types is on at any given time. This results in less power being needed in comparison to chips that have only one type of transistor. Since they rely on less power, CMOS chips have become incredibly attractive when building portable computers or other devices that require longer battery life. However, even personal computers Read More

A piezoelectric transducer is a device that converts electricity into mechanical forces or vibrations. Although piezoelectric transducers have other uses, ultrasonic devices require them. Piezoelectric transducers usually converts electricity into vibrations and vibrations into electricity, although this is not always the case. They rely on two phenomena known as “electrostriction” and “the piezoelectric effect.” How Piezoelectric Transducers Work Piezoelectric transducers are made of both positive and negative elements that align themselves when in the presence of an electric field. This property causes them to actually change dimensions. When an alternating Read More

Basic diodes are constructed from two semiconductor materials, germanium or silicon, to create a basic PN-junction. When two single diodes are connected to each other back-to-back, two PN-junctions that are connected in series are created. They share a common N or P terminal, which forms the basis of a BJT or Bipolar Junction Transistor. The BJT is a three layer, three terminal, and two junction device. BJTs are normally used in discrete circuit design as well as high-demand analog circuits such as RFs for wireless systems. They have also been Read More

Junction gate Field-Effect Transistor (JFET) is also known as JUGFET. The JFET is the most simple type of field effect transistor currently in use and has either voltage controlled resistance or an electronically controlled switch. When using a JFET, the electric charge flows in a semiconducting channel that is located between the source and drain terminals. When a bias voltage is applied to the gate terminal, the channel is pinched in order to switch off the electric current. JFET History Julius Lilienfeld was the first to discuss/predict the JFET in Read More