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    • SCPC (Single Channel Per Carrier)

      SCPC (Single Channel Per Carrier)

      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

    • Linear LNB

      Linear LNB

      LNB stands for low noise blocker and it is essentially an amplifier on the end of your small satellite TV dish or communications dish. The “Linear” portion of Linear LNB stands for the characteristics of the radio waves that are transmitted via the satellite in space to your dish (LNB). Two Types of Polarization Circular

    • Transponder

      Transponder

      A transponder is an automatic electronic monitoring or control device that receives, cross-examines, amplifies and retransmits the arriving signal. It is primarily implemented in wireless communication. The word ‘Transponder’ itself is a combination of two words; transmitter and responder (occasionally abbreviated to TPDR, TR, XPNDR, and XPDR). A transponder works by receiving a signal on

    • How LCD Projectors Work

      How LCD Projectors Work

      LCD projectors work by using three liquid crystal panels, a lamp, a prism, and filters to create the image on the screen. The lamp provides white light that passes through a polarizing filter. Polarizing works by accepting light that is traveling on the same plane. All other light will be blocked. From the polarizing filter

    • What is JFET?

      What is JFET?

      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

    • VSAT (Very Small Aperture Terminal)

      VSAT (Very Small Aperture Terminal)

      VSAT (Very Small Aperture Terminal) is basically a two-way satellite ground station with a less than 3 meters tall (most of them are about 0.75 m to 1.2 m tall) dish antenna stationed. The transmission rates of VSATs are usually from very low up to 4 Mbit/s. These VSATs’ primary job is to access the

    • What is VSWR?

      What is VSWR?

      VSWR (Voltage Standing Wave Ratio) is a metric commonly used with antenna systems for ham or shortwave radio communication. VSWR is normally defined as a ratio with a 1:1 VSWR, indicating that there is an exact or perfect match between all antenna system elements. The VSWR can also be expressed by comparing Vmax with Vmin

    • Circuit Simulator

      Circuit Simulator

      A circuit simulator is a computer program that predicts how electronic circuits work. Circuit designs are first entered through the schematic editor, then the simulation engine solves the complex equations that govern circuit behavior. Circuit simulators are especially useful for designing integrated circuits that are impractical to prototype using breadboards. The three types of simulator

    • Medium Earth Orbit

      Medium Earth Orbit

      Medium Earth Orbit (MEO) refers to a satellite which orbits the earth at an altitude below 22,300 miles (geostationary orbit) and above the altitude of Low Earth Orbit (LEO) satellites. Medium Earth Orbit represents a series of tradeoffs between geostationary orbit (GEO) and Low Earth Orbit (LEO). Medium Earth Orbit enables a satellite provider to

    • Yagi HDTV Antenna

      Yagi HDTV Antenna

      What is a Yagi HDTV Antenna? A Yagi antenna is one that uses directional, single-plane dipoles to pick up over-the-air radio transmissions for TV and radio. Yagi antennas have been extremely popular since the 1950s but have declined in use as more users have switched to cable and satellite plans. Yagi antennas are still widely

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