Coax connectors are essentially any connectors that are used to connect a coaxial cable to another cable or a device that requires a signal carried by the coaxial cable. They come in a variety of shapes and sizes and can be known by quite a few names. Among these, the most common alternative name for coax connectors are RF connectors.
All coax connectors are designed for individual uses, and very few connectors share exactly the same function or design specifications. However, although...
A spark-gap transmitter is a mechanism for producing radio signals. It has been the primary radio transmission device during the early years of radio technology. It was soon superseded by other transmitters due to its discontinuous radio wave production and widely varying frequencies. How a Spark-Grap Transmitter Works
A spark gap transmitter is basically composed of two capacitors (electrical apparatus designed to store electrical energy). However, the switch that ultimately forms the...
MURS (Multi Use Radio Service) is an unlicensed service. MURS consists of 5 VHF channels on FM. The maximum allowable power for a MURS radio is 2 watts. External gain antennas are allowed. Repeaters are not allowed. MURS Channels 151.820 MHz 151.880 MHz 151.940 MHz 154.570 MHz 154.600 MHz
For more information on MURS, visit The MURS-OPEN discussion group at Yahoo.com or the Frequently Asked...
Business band stands for a series of frequencies in the UHF and VHF two-way radio bands, which are exclusively reserved for businesses to communicate within limited ranges. Of course, not just anyone can use this bandwidth. Anyone that wants to use the business band must first receive a license from the Federal Communications Commission, also known as the FCC.
There are some exceptions to this rule in the form of five frequencies, which are part of the Multi Use Radio Service, which...
HD Radio offers a new and better way to broadcast radio programs. The "HD" in HD radio is a trademarked brand name that's given by its developer and that doesn't stand for anything. HD Radio technology is developed without any intention to replace traditional FM and AM radio broadcast. HD Radio is currently being broadcast along with conventional FM and AM signals.
The main difference of HD Radio compared to Amplitude Modulation (AM) and Frequency Modulation (FM) is...
A high-frequency alternator is an electrical device used for radio communications. It yields high-frequency, periodically alternating current that can go as high as 100,000 Hz for the purpose of producing stable radio waves. The History of High-Frequency Alternators
By the first decade of the 20th century, wireless telegraphy was already in place and was no longer a novelty. The problem, however, was that the primary means of wireless communication - the spark-gap transmitter - was seen to...
Pirate radio is broadcasting outside of the rules laid down by the Federal Communications Commission (FCC). Pirate radio usually occurs on the FM band because that is where the most receivers are.
Under Part 15 of the FCC rules, you can legally broadcast on the FM band if you broadcast using less that 100 milliwatts of output power and and antenna less than 3' long. In contrast, commercial FM broadcasters are required to broadcast using at least 100 watts of output power. 100...
UHF is an acronym for a band of radio frequencies often used to broadcast television signals. Mobile phones and satellite radio also use UHF signals. The letters 'UHF' stand for: Ultra High Frequency. UHF Frequencies
Any radio frequency between 300 MegaHertz (MHz) and 3,000 MHz (or 3 GigaHertz) is considered to be in the UHF signal range. This range is less commonly known as the decimeter range.
Frequencies immediately below 300 MHz are part of the VHF range. Radio frequencies above 3,000...
RFID tags are devices used for Radio-frequency identification (RFID). RFID is the process or method of automatically identifying radio frequencies. The RFID tag consists of mainly a microchip that is combined with an antenna or coil. The antenna picks up signals from an RFID reader and then returns the signal with additional information. The chip or integrated circuit is used to store the information that is collected from the signals picked up. The chip can also be used to process this...
In SSB, the carrier and one of the side bands are eliminated before transmission. This enables the power amplifier to focus all transmitter energy on the single remaining sideband.
SSB allows greater range with less power consumption. SSB also enables more efficient utilization of the radio frequency spectrum.
The SSB receiver reinserts the proper carrier after reception and before modulation.
