Decibels: Everything You Need to Know
What is a decibel dB? Some facts a decibel is the ratio of two power measurements decibels have no units decibels is a logarithmic relationship a decibel is 1/10 of a Bel decibels were created … Read More
What is SWR – Everything You Need To Know
What is SWR? When there is a mismatch between the output impedance of a transmitter and input impedance of an antenna, some of the signal – in the form of a wave – is reflected … Read More
What Is Capacitor?
What Is Capacitors? A capacitor, also known as a condenser, is a device that stores energy in an electrical field. Capacitors are open circuits to DC current, but their impedance drops as AC current passing through … Read More
Feedlines: Everything You Need to Know
Otherwise known as transmission lines, feedlines are used to transfer RF energy between a Transmitter, Receiver or transceiver and the antenna. Types Three types of feed lines are used by amateurs: Coax, Balanced Line, and Waveguide. … Read More
What Is The Sunspot Cycle?
What is it? The sunspot cycle is generally known to be a cycle of approximately 11 years between successive peaks in sunspot activity. What is less known and understood is that with each successive 11-year … Read More
What is A Dummy Load?
Why use a dummy load? A Dummy Load is used instead of an antenna when a transceiver is tested or adjusted. Reasons for using a dummy load include: using a transceiver without a load – … Read More
Skip Zone: Everything You Need to Know
Extracted from Wikipedia: Skip zone. A skip zone also called a silent zone or zone of silence is a region where a radio transmission can not be received located between regions both nearer and further from … Read More
2 Meter Amateur Radio Band: Everything You Need to Know
Other VHF/UHF/Microwave wiki pages: 13 centimeters, 9 centimeters, 6 centimeters, 3 centimeters 1.25 centimeters and Bands above 24GHz. 2 meters is probably the most heavily-used amateur band in the United States. Most newly-licensed Technician-class operators get their start in amateur radio on … Read More
Top Band -160 Meter Radio Propagation
160 meters, often known as Top Band, is technically Medium Frequency (MF) band, the only one licensed to amateurs. It is slightly higher in frequency than the broadcast band (540 kHz – 1600 kHz) and … Read More
What is Repeater?
In amateur and commercial land-mobile radio, as well as in radio/television broadcasting, a repeater is a station that receives a signal on one frequency, immediately retransmitting it (normally on a different frequency) in order to extend … Read More